The Canalta Single Chamber Orifice Fitting

Exceptional Value means adding to your Bottom Line

without sacrificing Quality, Service or Performance
Call Us Toll Free: 1-855-CANALTA
An ISO 9001:2008 registered company

Phone: 403.342.4494
Email: sales@canaltaflow.com
www.canaltaflow.com

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

The Canalta

Single Chamber Orifice Fitting is a high

quality, high accuracy orifice fitting manufactured in a wide selection of sizes and materials.
These units are built to meet or exceed ASME and ANSI specifications, as well as to comply
with the requirements of the latest editions of AGA-3 / API-14.3 and ISO-5167. Whatever the
application, your process will benefit from Canaltas proven reliability and you can improve
your bottom line without sacrificing quality, service or performance.

All Single Chamber Orifice Fittings come standard with HNBR O-ring seals on the seal bar.
This feature provides you with superior sealing capability while eliminating nuisance gasket
maintenance and clamping bar screw breakage. The O-rings incorporated are
standard shelf sizes and can be supplied in a wide variety of compositions.
Gaskets are also available and can be used when preferred or required.

Delivering superior
orifice fittings and
exceptional value has
been our core business
for over fifteen years.

Our comprehensive Quality Management System includes

full function, hydrostatic and pneumatic pressure testing to prevent
defective orifice fittings from reaching service. Standard testing
comes at no extra charge and includes verifiable pressurization
to 150% of working pressure. Additional inspections, such as
radiography, ultra sonic and liquid dye penetration, are also
available.

Our unit-specific Documentation packages include hydrostatic,

seal and function test results as well as material test reports. An
AGA 2000 Inspection Report is submitted with every fitting and
includes bore tolerance and roughness tests, orifice eccentricity,
seal protrusion, plate sealing tests and other details critical to your
process integrity.

Single Chamber Orifice Fitting models 8 and larger

incorporate a rack and pinion gear system to manage the
sizeable weight of large orifice plates and carriers. With
this system, plate changing remains quick and easy.
These models also feature fully accessible and adjustable
eccentricity of the orifice plate from the exterior of the
fitting. Tamper-proof sealing is done on request.

Each Canalta Single Chamber Orifice Fitting receives a standard

coating that includes a non-lift oxide primer and fast-drying
enamel finish in Canalta Grey. Custom coatings for special
environments - maritime, humid, high temperature and others custom colours and primer only applications are also available.

Flangeneck (welding neck upstream, raised face / RTJ flange downstream)

Flange X Flange (raised face / RTJ)

Weldneck both ends

WCB

LCC

Canalta Single Chamber Orifice Fitting bodies are available in a number of standard and
custom end configurations. Some of our most popular arrangements include

LCC

Single Chamber Orifice Fitting Bodies are also available with an extra set of telemetering tap holes on each side as an option.
3

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

Whether the size is 2 or 30, high or low pressure, wet, dry or corrosive service, we can put together a custom meter run
package that meets your specification or performance needs and perfectly matches your Canalta Orifice Fitting.

METER RUNS

You trust Canalta at the orifice plate. When accuracy counts,

trust Canalta up and downstream, too.

All Canalta Single Chamber Orifice Fittings can be supplied with

complete custom-designed Meter Runs and Flow Conditioning
Solutions that meet your exact specification or performance needs.

Weve been working to AGA-3 / API 14.3 and ISO 5167-1 specifications for over fifteen years. Skilled technicians, engineers
and inspectors work together to manufacture first-rate meter tubes out of pipe carefully selected and prepared with
the appropriate surface requirements, roundness and I.D. tolerances. Hydrostatic test results are included as a standard.
PWHT stress relief, ultra-sonic and liquid dye penetration test results are available on request. Our rigorous inspection
regime and comprehensive documentation mean you can be sure your meter run is reliable, exceptionally accurate and
ready for service.

FLOW CONDITIONING ACCESSORIES

BRANCH CONNECTION OPTIONS

Industry standard offerings provide one 1 and one 3/4 branch connection on
the downstream spool. Our custom meter tube design capability allows us to
fabricate nearly any combination of weldolets, sockolets, flanged outlets, threadolets and latrolets in any orientation.

The goal of meter run design is to account for swirl and turbulence. Suitable
for a wide range of flow measurement methods and equipment, Canaltas
Contour lineup of Flow Conditioners, Flow Conditioner Housings and
Straightening Vanes will help you develop the flow profile you need to achieve
maximum performance and accuracy in the field.

270
(Left)

90
(Right)

180
A-A
T.O.L. ORIENTATION

Canalta Meter Runs can be fabricated with a variety of standard tube ends. All
inner surface welds are precision ground and inspected to meet exacting I.D.
surface and roundness tolerances. Per your requirements, two and three-piece
meter runs can have dissimilar end types up and downstream of the orifice
fitting.

Welding Neck

Threaded

Flanged
(Raised Face / RTJ)

90 Elbow

WELDING SPECIFICATION
Each Canalta Meter Run is professionally fabricated by our team of certified
B Pressure Welders and experienced pipe finishers to meet and exceed the
stringent specifications of AGA /API/ISO. Our welding procedures are registered
with the Alberta Boiler and Safety Association (ABSA) and are in accordance
with the applicable ASME Boiler and Pressure Vessel Codes. Canalta will
ensure that all of your NDT and stress relieving requirements are met with full
documentation.

END CONNECTION OPTIONS

_
Th

_
Tb

tc

METER RUN SPECIFICATION PLATE

All Canalta Meter Runs include a specification plate mounted immediately
upstream of the orifice fitting. These spec plates detail pipe schedule, pressure
rating, maximum beta, maximum orifice and other information essential to
proper operation.

With literally endless configurations

possible, Canalta will custom design
and fabricate your meter run for any
application.

ACCURACY, RELIABILITY,
PERFORMANCE.
5

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

ORIFICE PLATE SEAL OPTIONS & CARRIER ASSEMBLIES

Type K Standard 2000 Edition Seal Assembly
This is the standard seal assembly supplied with all orifice fittings from sizes 2 through
8. This unit is used with a .562 seal gap for fittings sizes 2 through 6, and with a .688
seal gap for 8 fittings. The single downstream seal function offers superior sealing
capability while reducing seal damage during insertion. Plate seal bypass
tested down to 1 water column.

HNBR
SEAL RING

ORIFICE PLATE

STAINLESS STEEL
RETAINING RING

FLOW

The seal assembly is comprised of an elastomer seal and one

stainless steel retainer ring. Exacting and repeatable concentricity
is maintained with the metal to metal contact throughout the entire
360 circumference of the orifice plate to the plate carrier mechanism.

BEVEL

Teflon Snap Seal

The Teflon Snap Seal provides positive plate sealing in the harshest of process
environments. The two-piece design snaps over the orifice plate without
the use of metal clips or retainers. A specially designed recess absorbs the
insertion pressures, minimizing permanent compression and distortion.

TEFLON
SNAP RING

ORIFICE PLATE

The raised section adjacent to the recess creates a positive seal against the
orifice plate, preventing bypass leakage. These two unique design features
enhance seal performance while extending the life expectancy of the seal
assembly.

TEFLON
SNAP RING

FLOW

BEVEL

Bonded FLEX Seal

This is the standard seal supplied with all Canalta Orifice Fitting
model sizes 10" and larger. Designed with a unique "hollow
core" recess, this seal has impressive expansion and contraction
capabilities when compared to traditional solid rubber seals.
The recess allows the seal to absorb insertion pressures,
minimizing tearing, distortion and permanent compression.
The 80 duro HNBR seal is adhesively bonded to the orifice plate,
creating total and permanent contact between the plate and
seal and preventing bypass leakage.

FLOW

BEVEL

Legacy Replacement Seals

Canalta supplies a selection of legacy plate seals for
situations in which direct and exact seal replacement
is required or preferred. Models include two piece
clip-style Teflon, solid core HNBR or Nitrile and the
stainless steel dual ring assemblies.
We will also work with you to custom design and
manufacture purpose-built seals for your unique or
special applications.

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

TECHNICAL SPECIFICATIONS
Design . . . . . . . . . . . . . . . . . . . . . . . Orifice fittings supplied in Canada are built in accordance with the
ABSA Quality Control Program and carry a CRN registration number.
Industry Canada Approval Number AF-0014.
In compliance with ASME 16.34 and ASME 16.5, ASTM specifications,
AGA-3 Latest Edition and ISO-5167.
Body Materials . . . . . . . . . . . . . . . A216 WCB, A216 WCC, A352 LCC, A358 CF8M, A995 Gr4A, A995 Gr6A, Custom
Internal Parts . . . . . . . . . . . . . . . . . AISI 4130 Carbon Steel, 316 or A351 Stainless Steel
Sizes and ANSI Class . . . . . . . . . . 2 through 26, 150 through 1500 ANSI raised face flange
600, 900 and 1500 flanges also available in RTJ face flange
U/S D/S Connections . . . . . . . . . . Flangeneck design (weldneck U/S, flange D/S)
Flange x Flange
Weldneck both ends
Internal Bore Sizes . . . . . . . . . . . . 40, 60, 80, 100, 120, 160 and custom sizes
Sealing Compounds . . . . . . . . . . Seal bar - HNBR O-ring standard, gasket optional
Orifice plate - Type K 2000 Edition formed HNBR seal on a 316 SS retainer ring

Dual Ring HNBR O-rings standard on a 316 SS retainer ring assembly

Teflon Snap Seal two-piece virgin Teflon assembly
Line Bore I.D. Tolerance . . . . . . . In conformance with AGA-3 and ISO-5167 Latest Editions
Eccentricity Repeatability . . . . . In conformance with AGA-3 and ISO-5167 Latest Editions
Tap Connections . . . . . . . . . . . . . Two 1/2 NPT per side standard, two 1/2 NPT additional per side optional (TT)
2 and 3 fitting sizes center bored to .375 inside diameter
4 and larger sizes center bored to .500 inside diameter
Tolerance +/- 1/64
Orifice Plate Seal Gap . . . . . . . . . 2 through 6 = 0.562, 8 through 14 = 0.688, 16 through 20 = 0.813,
24 through 26 = 0.875
Operating Shaft Location . . . . . Shafts are a feature only on fitting sizes 8 and larger
Left hand mount standard on sizes 8 through 16
Dual operation on sizes 20 and larger
Operating Temperature . . . . . . . Standard at -20 to 100 F, optional -40 to 1200 F
Operating Position . . . . . . . . . . . Vertical or horizontal

Conformance
All fittings come standard with a documentation package including hydro-test, function test, inner valve seal
test, quality control inspection and material test reports. Trace ability is maintained in accordance with the
ISO-9001 Quality Control Program. The fittings are manufactured within the guidelines of ASME 16.34 and
ASME 16.5. When required, radiography, stress relief, ultra-sonic and liquid dye penetration tests can be performed with the relevant report submitted.

Reporting
An AGA 2000 inspection report is included with the purchase of every fitting.

I.D. Bore Tolerance
Instrument Tap Diameter

Tap Communication
Plate Seal Test

Orifice Eccentricity
Bore Inside Diameter

The documented tests include:

Instrument Tap Location
Seal Protrusion
Bore Roughness

Our Quality Control systems guarantee that

your Canalta Orifice Fittings are service
ready, reliable and truly accurate.

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

DIAGRAMS, WEIGHTS & DIMENSIONS - 2 - 6 SINGLE CHAMBER MODELS

Flangeneck Design (Weldneck Upstream, Flange Downstream)
Cast Carbon Steel Body
ANSI 150 - 900

8G

8H

13

8K
11

9A

S
1

9B
5A

J1 A

1/16

50

37.5

6
31

K1

5
12

31

O
N
C

B
D

Seal Bar Alignment Pin

Plate Carrier Alignment Pin

8G

Plate Carrier

4130 YZP CS / CF8M SS

8H

Seal Ring

HNBR

8K

K Style Retaining Ring

316 SS

9A

Seal Bar

1018 YZP CS

9B

Seal Bar O-ring

HNBR

11

A/R

Clamping Bar Screw

Case Hardened 4140 CS

12

Clamping Bar

1018 YZP CS

13

Orifice Plate

304 SS / 316 SS

30

Drain Plug

A105 CS / 316L SS

31

Meter Tap Plug

A105 CS / 316L SS

50

Specification Plate

Color Etched 316 SS

YZP CS = Yellow Zinc Plated Carbon Steel

A/R = As Required per Model Size

30
4

SIZE

J1

K1

2
3
4
6

40,80
40
40
40

3.875
4.438
4.938
5.688

3.375
3.688
4.063
5.500

7.375
8.250
9.125
11.313

2.375
3.500
4.500
6.625

3.563
4.063
4.500
5.750

6.000
7.500
9.000
11.000

2
3
4
6

40,80
40
40
40,80

3.875
4.438
4.938
5.688

3.500
3.875
4.313
5.500

7.500
8.438
9.375
11.313

2.375
3.500
4.500
6.625

3.563
4.063
4.500
5.750

6.500
8.250
10.000
12.500

2
3
4
6

40,80,160
40,80
40,80
40,80

3.813
4.438
4.938
5.688

3.875
4.188
4.750
5.688

7.813
8.750
9.813
11.500

2.375
3.500
4.500
6.625

3.563
4.063
4.500
5.750

6.500
8.250
10.750
14.000

2
3
4
6

40,80,160
40,80
40,80
40,80

3.875
4.438
4.938
5.688

3.875
4.250
4.813
5.750

7.875
8.813
9.875
11.563

2.375
3.500
4.500
6.625

3.563
4.063
4.500
5.750

6.500
8.250
10.750
14.000

2
3
4
6

40,80,160
40,80,160
80,160
80,160

3.938
4.438
4.938
5.688

4.563
4.438
5.000
5.688

8.625
9.000
10.063
11.500

2.375
3.500
4.500
6.625

3.563
4.063
4.500
5.750

8.500
9.500
11.500
15.000

2
3
4
6

40,80,160
40,80,160
80,160
80,160

3.938
4.438
4.938
5.688

4.625
4.500
5.063
5.750

8.688
9.063
10.125
11.563

2.375
3.500
4.500
6.625

3.563
4.063
4.500
5.750

8.500
9.500
11.500
15.000

K
L
M
N
ANSI 150 - Flangeneck - Standard Raised Face
4.750
3.625
0.063
0.750
6.000
5.000
0.063
0.938
7.500
6.188
0.063
0.938
9.500
8.500
0.063
1.000
ANSI 300 - Flangeneck - Standard Raised Face
5.000
3.625
0.063
0.875
6.625
5.000
0.063
1.125
7.875
6.188
0.063
1.250
10.625
8.500
0.063
1.438
ANSI 600 - Flangeneck - Standard Raised Face
5.000
3.625
0.250
1.250
6.625
5.000
0.250
1.500
8.500
6.188
0.250
1.750
11.500
8.500
0.250
2.125
ANSI 600 - Flangeneck - Ring Type Joint
5.000
3.625
0.313
1.313
6.625
5.000
0.313
1.563
8.500
6.188
0.313
1.813
11.500
8.500
0.313
2.188
ANSI 900 - Flangeneck - Standard Raised Face
6.500
3.625
0.250
1.750
7.500
5.000
0.250
1.750
9.250
6.188
0.250
2.000
12.500
8.500
0.250
2.438
ANSI 900 - Flangeneck - Ring Type Joint
6.500
3.625
0.313
1.813
7.500
5.000
0.313
1.813
9.250
6.188
0.313
2.063
12.500
8.500
0.313
2.500

Approximate Weight
(Pounds)

Operating Clearance from

Center

Centerline to Top

316 SS

Orifice Plate Thickness

Lock Washer

Center to face of 1/2"

Flange Taps

Length of Bolt (Studs with 2

Hex Nuts)

5A

Number and Diameter of

Bolts or Studs (Per Flange)

316 SS

Flange Thickness

Plate Carrier Bolt

Height of Raised Face

Diameter of Raised Face

+0.000 -0.005

Sizes, Dimensions and Weights

Diameter of Bolt Circle

WCB / LCC / SS

Diameter of Flange

Flangeneck Body

Centerline to Bottom

Pipe O.D at point of

Welding

Overall Face to Face

Material

Downstream Face of Orifice

Plate to Face of End

Description

Upstream Face of Orifice

Plate to Face of End

Qty.

Available Pipe Sch.

Item

SIZE

4 - 0.625
4 - 0.625
8 - 0.625
8 - 0.625

3.250
3.500
3.500
4.000

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

40
50
65
110

2
3
4
6

8 - 0.625
8 - 0.750
8 - 0.750
12 - 0.750

3.500
4.250
4.500
4.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

40
55
75
125

2
3
4
6

8 - 0.750
8 - 0.750
8 - 0.875
12 - 1.000

4.250
5.000
5.750
6.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

45
70
100
155

2
3
4
6

8 - 0.625
8 - 0.750
8 - 0.875
12 - 1.000

4.250
5.000
5.750
6.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

45
70
100
155

2
3
4
6

8 - 0.875
8 - 0.875
8 - 1.125
12 - 1.125

5.750
5.750
6.750
7.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

70
80
125
269

2
3
4
6

8 - 0.875
8 - 0.875
8 - 1.125
12 - 1.125

5.750
5.750
6.750
7.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

70
80
125
269

2
3
4
6

Data REV 08 - 11/2012

10

For the latest editions of the complete data tables, visit us online at www.canaltaflow.com

11

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

DIAGRAMS, WEIGHTS & DIMENSIONS - 2 - 6 SINGLE CHAMBER MODELS

Flange x Flange (Raised Face / Ring Type Joint)
Cast Carbon Steel Body
ANSI 150 - 900

Weldneck Both Ends

Cast Carbon Steel Body
ANSI 150 - 900
T

J1 A
R

L K J

K1

K1
M
B

7.500
8.438
9.375
11.313

3.563
4.063
4.500
5.750

6.500
8.250
10.000
12.500

2
3
4
6

40,80,160
40,80
40,80
40,80

3.875
4.438
4.938
5.688

3.875
4.188
4.750
5.688

7.875
8.750
9.813
11.500

3.563
4.063
4.500
5.750

6.500
8.250
10.750
14.000

2
3
4
6

40,80,160
40,80
40,80
40,80

3.938
4.438
4.938
5.688

3.813
4.188
4.813
5.750

7.875
8.750
9.875
11.563

3.563
4.063
4.500
5.750

6.500
8.250
10.750
14.000

2
3
4
6

40,80,160
40,80,160
80,160
80,160

3.938
4.438
4.938
5.688

4.250
4.438
5.000
5.688

8.313
9.000
10.063
11.500

3.563
4.063
4.500
5.750

8.500
9.500
11.500
15.000

2
3
4
6

40,80,160
40,80,160
80,160
80,160

3.938
4.438
4.938
5.688

4.563
4.500
5.063
5.750

8.625
9.063
10.125
11.563

3.563
4.063
4.500
5.750

8.500
9.500
11.500
15.000

45
59
77
128

2
3
4
6

SIZE

J1

K1

40,80,160

3.812

3.875

7.812

2.375

3.563

40,80,160

4.437

4.188

8.750

3.500

4.063

3.500
4.250
4.500
5.000

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

47
68
96
160

2
3
4
6

80,160

4.938

4.751

9.813

4.500

80,160

5.688

5.688

11.375

6.625

4.500
5.000
5.750
6.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

53
85
133
235

2
3
4
6

4.500
5.000
5.750
6.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

53
85
133
235

2
3
4
6

5.750
5.750
6.750
7.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

95
111
178
377

2
3
4
6

5.750
5.750
6.750
7.750

3.250
3.700
4.200
5.125

0.125
0.125
0.125
0.125

4.563
5.188
5.625
6.875

5.500
6.000
6.438
7.500

95
111
178
377

2
3
4
6

3.250

0.125

4.563

5.500

50

3.700

0.125

5.188

6.000

60

4.500

4.200

0.125

5.625

6.438

80

5.750

5.125

0.125

6.875

7.500

125

Approximate
Weight (Pounds)

5.500
6.000
6.438
7.500

Operating
Clearance from
Center

3.438
3.875
4.313
5.500

4.563
5.188
5.625
6.875

Centerline to Top

3.938
4.438
4.938
5.688

0.125
0.125
0.125
0.125

SIZE

Orifice Plate
Thickness

40,80
40
40
40,80

3.250
3.700
4.200
5.125

Centerline to
Bottom

2
3
4
6

3.250
3.750
3.750
4.000

Pipe O.D at point

of Welding

6.000
7.500
9.000
11.000

Overall End to
End

3.563
4.063
4.500
5.750

Downstream Face
of Orifice Plate to
Bevel

7.375
8.250
9.063
11.313

Upstream Face
of Orifice Plate to
Bevel

3.313
3.688
4.063
5.500

Available Pipe
Sch.

3.938
4.438
4.938
5.688

Approximate Weight
(Pounds)

40,80
40
40
40

Operating Clearance from

Center

2
3
4
6

L
M
N
ANSI 150 - Flange x Flange - Standard Raised Face
4.750
3.625
0.063
0.750
4 - 0.625
6.000
5.000
0.063
0.938
4 - 0.625
7.500
6.188
0.063
0.938
8 - 0.625
9.500
8.500
0.063
1.000
8 - 0.625
ANSI 300 - Flange x Flange - Standard Raised Face
5.000
3.625
0.063
0.875
8 - 0.625
6.625
5.000
0.063
1.125
8 - 0.750
7.875
6.188
0.063
1.250
8 - 0.750
10.625
8.500
0.063
1.438
12 - 0.750
ANSI 600 - Flange x Flange - Standard Raised Face
5.000
3.625
0.250
1.250
8 - 0.625
6.625
5.000
0.250
1.500
8 - 0.750
8.500
6.188
0.250
1.750
8 - 0.875
11.500
8.500
0.250
2.125
12 - 1.000
ANSI 600 - Flange x Flange - Ring Type Joint
5.000
3.625
0.313
1.250
8 - 0.625
6.625
5.000
0.313
1.500
8 - 0.750
8.500
6.188
0.313
1.750
8 - 0.875
11.500
8.500
0.313
2.125
12 - 1.000
ANSI 900 - Flange x Flange - Standard Raised Face
6.500
3.625
0.250
1.750
8 - 0.875
7.500
5.000
0.250
1.750
8 - 0.875
9.250
6.188
0.250
2.000
8 - 1.125
12.500
8.500
0.250
2.438
12 - 1.125
ANSI 900 - Flange x Flange - Ring Type Joint
6.500
3.625
0.313
1.750
8 - 0.875
7.500
5.000
0.313
1.750
8 - 0.875
9.250
6.188
0.313
2.000
8 - 1.125
12.500
8.500
0.313
2.438
12 - 1.125

Centerline to Top

Orifice Plate Thickness

Diameter of Bolt Circle

Sizes, Dimensions and Weights

Center to face of 1/2"
Flange Taps

Diameter of Flange

K1

Length of Bolt (Studs with 2

Hex Nuts)

Centerline to Bottom

Number and Diameter of

Bolts or Studs (Per Flange)

Overall Face to Face

Flange Thickness

Downstream Face of Orifice

Plate to Face of End

Height of Raised Face

Upstream Face of Orifice

Plate to Face of End

Diameter of Raised Face

+0.000 -0.005

Available Pipe Sch.

Sizes, Dimensions and Weights

SIZE

Center to face of
1/2" Flange Taps

SIZE

Weldneck Configuration

Data REV 08 - 11/2012

Data REV 08 - 11/2012

12

For the latest editions of the complete data tables, visit us online at www.canaltaflow.com

13

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

DIAGRAMS, WEIGHTS & DIMENSIONS - 8 - 16 SINGLE CHAMBER MODELS

Flangeneck Design (Weldneck Upstream, Flange Downstream)
Cast Carbon Steel Body
ANSI 150 - 900

9G
9B
58
8

8H

13
8K
11
50

28A

25A

22A

20

25C

25E

26B

12

J1

J K L A

26

19

26A

25

K1

22A

25A
28E

31

55

55

56

30

31

Operating Wrench

Coated Cast Iron

22A

Stuffing Box Gasket

316 SS

Upstream Face of Orifice

Plate to Face of End

Pipe O.D at point of

Welding

Centerline to Bottom

Diameter of Flange

Flangnek Body

WCB / LCC / SS

25

Packing Nut

Downstream Face of Orifice

Plate to Face of End

Overall Face to Face

4130 YZP CS

SIZE

J1

K1

Shaft and Pinions

4130 YZP CS / CF8M SS

25A-F

A/R

Packing Sleeves

Teflon

Plate Carrier

4130 YZP CS / CF8M SS

25S

Complete Packing Set

Teflon

8
10
12
16

40
40
STD,40,80
30, 40

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.625
10.750
12.750
16.000

8.250
10.062
11.750
13.875

13.500
16.000
19.000
23.500

8H

Seal Ring

HNBR

26

Stuffing Box Gland

316 SS

8K

K Style Retaining Ring

316 SS

26A

Stuffing Box Inner Gland Seal

HNBR

8
10
12
16

40,80
40, 60, 80
STD,40,80
30, 40

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.625
10.750
12.750
16.000

8.250
10.062
11.750
13.875

15.000
17.500
20.500
25.500

9B

Seal Bar O-ring

HNBR

26B

Stuffing Box Outer Gland Seal

HNBR

9G

Seal Bar

1018 YZP CS

28A-E

Bushing Retainer

316 SS

8
10
12
16

80
60,80
80
60,80

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.625
10.750
12.750
16.000

8.250
10.063
11.750
13.875

16.500
20.000
22.000
27.000

11

A/R

Clamping Bar Screws

Case Hardened 4140 CS

30

Drain Plug

A105 CS / 316L SS

12

Clamping Bar

1018 YZP CS

31

Meter Tap Plug

A105 CS / 316L SS

8
10
12
16

80
60,80
80
60,80

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.625
10.750
12.750
16.000

8.250
10.063
11.750
13.875

16.500
20.000
22.000
27.000

13

Orifice Plate

304 SS / 316 SS

50

Specification Plate

Color Etched 316 SS

19

Bearing Plug

4130 YZP CS

55

Eccentricity Alignment Pins

18/8 SS

8
10
12
16

100, 120
100, 120
100, 120
100, 120

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.625
10.750
12.750
16.000

8.250
10.063
11.750
13.875

18.500
21.500
24.000
27.750

20

Stuffing Box

4130 YZP CS

56

Eccentricity Alignment Pin Plugs

58

Plate Carrier Alignment Screw

18/8 SS

8
10
12
16

100, 120
100, 120
100, 120
100, 120

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.625
10.750
12.750
16.000

8.250
10.063
11.750
13.875

18.500
21.500
24.000
27.750

YZP CS = Yellow Zinc Plated Carbon Steel

A/R = As Required per Model Size

K
L
M
N
ANSI 150 - Flangeneck - Standard Raised Face
11.750
10.625
0.063
1.062
14.250
12.750
0.063
1.125
17.000
15.000
0.063
1.188
21.250
18.500
0.063
1.313
ANSI 300 - Flangeneck - Standard Raised Face
13.000
10.625
0.063
1.625
15.250
12.750
0.063
1.875
17.750
15.000
0.063
1.938
22.500
18.500
0.063
2.188
ANSI 600 - Flangeneck - Standard Raised Face
13.750
10.625
0.250
2.188
17.000
12.750
0.250
2.500
19.250
15.000
0.250
2.625
23.750
18.500
0.250
3.000
ANSI 600 - Flangeneck - Ring Type Joint
13.750
11.875
0.312
2.188
17.000
14.000
0.312
2.500
19.250
16.250
0.313
2.625
23.750
20.000
0.313
3.000
ANSI 900 - Flangeneck - Standard Raised Face
15.500
10.625
0.250
2.500
18.500
12.750
0.250
2.750
21.000
15.000
0.250
3.125
24.250
18.500
0.250
3.500
ANSI 900 - Flangeneck - Ring Type Joint
15.500
12.125
0.312
2.500
18.500
14.250
0.312
2.750
21.000
16.500
0.312
3.125
24.250
20.625
0.438
3.500

Approximate Weight
(Pounds)

Operating Clearance from

Center

Material

Centerline to Top

Description

Orifice Plate Thickness

Qty.

Center to face of 1/2"

Flange Taps

Item

Length of Bolt
(Studs with 2 Hex Nuts)

Material

Number and Diameter of

Bolts or Studs (Per Flange)

Description

Flange Thickness

Qty.

Height of Raised Face

Item

Available Pipe Sch.

56

Diameter of Raised Face

+0.000 -0.005

Sizes, Dimensions and Weights

30

Diameter of Bolt Circle

55

14

56

SIZE

8 - 0.750
12 - 0.875
12 - 0.875
16 - 1.000

4.250
4.750
4.750
5.500

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

375
640
875
1135

8
10
12
16

12 - 0.875
16 - 1.000
16 - 1.125
20 - 1.250

5.500
6.250
6.750
7.500

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

400
680
925
1260

8
10
12
16

12 - 1.125
16 - 1.250
20 - 1.250
20 - 1.500

7.250
8.250
8.500
9.750

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

520
685
880
1560

8
10
12
16

12 - 1.125
16 - 1.250
20 - 1.250
20 - 1.500

7.750
8.500
8.750
10.000

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

520
685
880
1560

8
10
12
16

12 - 1.375
16 - 1.375
20 - 1.375
20 - 1.625

8.500
9.000
9.750
11.000

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

520
1100
1150
1670

8
10
12
16

12 - 1.375
16 - 1.375
20 - 1.375
20 - 1.625

8.750
9.250
10.000
11.500

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

520
1100
1150
1670

8
10
12
16

Data REV 08 - 11/2012

For the latest editions of the complete data tables, visit us online at www.canaltaflow.com

15

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

DIAGRAMS, WEIGHTS & DIMENSIONS - 8 - 16 SINGLE CHAMBER MODELS

INSTALLATION RECOMMENDATIONS
The Single Chamber Orifice Fitting is typically installed in conjunction with upstream and downstream meter run sections (tubes). This is essential to meet the recommendations of both AGA Report 3 and ISO 5167.
To obtain the best measurement results, follow the recommended piping configurations and installation
requirements of either of these two standards, as well as the recommendations below.

Flange x Flange
Cast Carbon Steel Body
ANSI 150 - 900
T
N
M

1. Always ensure that operating staff are competent and properly trained to operate this and all other
pressurized equipment.
S

2. When installing the fitting or meter run, ensure that the flow arrow on the outer surface of the fitting
corresponds to the direction of flow in the line.

3. Attention to clearances is essential. Consult the attached dimensional drawings and tables for details.
Ensure there is operating clearance above the top of the fitting for removal of the plate carrier. For 8
- 16 Single Chamber models, additional clearance at the sides of the fitting is necessary for pinion gear
rotation and operating wrench removal.

K1

4. When used to measure wet gas, the vertical mount is recommended to prevent dam formation against
the orifice plate.

1
B

C
O

5. Instrument tap lines should be installed sloping upwards to the differential pressure measurement
instrument. Where this cannot be accomplished, use seal pots to chemically seal the sensing lines and
eliminate hydrostatic head errors.
6. To avoid damage to the orifice plate, ensure that the orifice plate and plate carrier are removed from
the fitting prior to pressure testing the system.

40
40
STD,40,80
30, 40

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.250
10.062
11.750
13.875

13.500
16.000
19.000
23.500

8
10
12
16

40,80
40, 60, 80
STD,40,80
30, 40

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.250
10.062
11.750
13.875

15.000
17.500
20.500
25.500

8
10
12
16

80
60,80
80
60,80

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.250
10.063
11.750
13.875

16.500
20.000
22.000
27.000

8
10
12
16

80
60,80
80
60,80

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.250
10.063
11.750
13.875

16.500
20.000
22.000
27.000

8
10
12
16

100, 120
100, 120
100, 120
100, 120

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.250
10.063
11.750
13.875

18.500
21.500
24.000
27.750

8
10
12
16

100, 120
100, 120
100, 120
100, 120

7.250
8.313
9.875
10.813

7.250
8.750
9.875
11.313

14.750
17.313
20.000
22.500

8.250
10.063
11.750
13.875

18.500
21.500
24.000
27.750

4.250
4.750
4.750
5.500

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

400
675
935
1225

8
10
12
16

5.500
6.250
6.750
7.500

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

450
755
1035
1480

8
10
12
16

7.250
8.250
8.500
9.750

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

540
960
1250
1875

8
10
12
16

7.750
8.500
8.750
10.000

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

540
960
1250
1875

8
10
12
16

8.500
9.000
9.750
11.000

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

690
1100
1475
2125

8
10
12
16

8.750
9.250
10.000
11.500

7.000
7.875
9.500
12.375

0.250
0.250
0.250
0.375

8.750
10.500
11.313
13.750

16.000
17.375
16.875
23.250

690
1100
1475
2125

8
10
12
16

Approximate Weight
(Pounds)

8
10
12
16

L
M
N
ANSI 150 - Flange x Flange - Standard Raised Face
11.750
10.625
0.063
1.062
8 - 0.750
14.250
12.750
0.063
1.125
12 - 0.875
17.000
15.000
0.063
1.188
12 - 0.875
21.250
18.500
0.063
1.313
16 - 1.000
ANSI 300 - Flange x Flange - Standard Raised Face
13.000
10.625
0.063
1.625
12 - 0.875
15.250
12.750
0.063
1.875
16 - 1.000
17.750
15.000
0.063
1.938
16 - 1.125
22.500
18.500
0.063
2.188
20 - 1.250
ANSI 600 - Flange x Flange - Standard Raised Face
13.750
10.625
0.250
2.188
12 - 1.125
17.000
12.750
0.250
2.500
16 - 1.125
19.250
15.000
0.250
2.625
20 - 1.250
23.750
18.500
0.250
3.000
20 - 1.500
ANSI 600 - Flange x Flange - Ring Type Joint
13.750
11.875
0.312
2.188
12 - 1.125
17.000
14.000
0.312
2.500
16 - 1.250
19.250
16.250
0.313
2.625
20 - 1.250
23.750
20.000
0.313
3.000
20 - 1.500
ANSI 900 - Flange x Flange - Standard Raised Face
15.500
10.625
0.250
2.500
12 - 1.375
18.500
12.750
0.250
2.750
16 - 1.375
21.000
15.000
0.250
3.125
20 - 1.375
24.250
18.500
0.250
3.500
20 - 1.625
ANSI 900 - Flange x Flange - Ring Type Joint
15.500
12.125
0.312
2.500
12 - 1.375
18.500
14.250
0.312
2.750
16 - 1.375
21.000
16.500
0.312
3.125
20 - 1.375
24.250
20.625
0.438
3.500
20 - 1.625

Operating Clearance from

Center

Centerline to Top

Orifice Plate Thickness

Diameter of Bolt Circle

K1

7. Before inserting the orifice plate and plate carrier into the fitting, always ensure that the lower cavity
of the fitting is free of debris. If debris has accumulated, remove the lower drain plugs and rod-clean
the lower section.

Center to face of 1/2"

Flange Taps

Diameter of Flange

Length of Bolt (Studs with 2

Hex Nuts)

Centerline to Bottom

Number and Diameter of

Bolts or Studs (Per Flange)

Overall Face to Face

Flange Thickness

Downstream Face of Orifice

Plate to Face of End

Height of Raised Face

Upstream Face of Orifice

Plate to Face of End

SIZE

Diameter of Raised Face

+0.000 -0.005

Available Pipe Sch.

Sizes, Dimensions and Weights

SIZE

Data REV 08 - 11/2012

16

For the latest editions of the complete data tables, visit us online at www.canaltaflow.com

17

For more information or to order, contact us at

Phone: 403.342.4494 |

Fax: 403.346.7110 |

Email: sales@canaltaflow.com | Web: www.canaltaflow.com

An ISO 9001:2008 Registered Company

OPERATING INSTRUCTIONS - 2 - 6 SINGLE CHAMBER MODELS

OPERATING INSTRUCTIONS - 8 - 16 SINGLE CHAMBER MODELS

To remove the orifice plate

(a) Ensure that the fitting is completely depressurized.

(b) Loosen the clamping bar screws (11) and remove
the clamping bar (12).
(c) Remove the plate carrier and seal bar unit (8).
(d) Remove the orifice plate and seal assembly (13)
from the plate carrier.
(e) Extract the orifice plate from the seal.

WARNING: PRESSURIZED UNIT.

WARNING: The unit may be under extreme high
pressure. Failure to depressurize the line before
attempting to remove the seal bar may result
in bodily harm or death. Follow all instructions
carefully.

To replace the orifice plate

(A) Reinstall the orifice plate into the seal.

(B) Install the seal assembly (13) into the plate carrier (8), ensuring that the orifice plate bevel faces
down stream.
(C) Check that the seal bar O-ring or gasket is clean and in position.
(D) Replace the plate carrier and seal bar unit (8) while ensuring that the index hole (9B) is placed
over the seal bar alignment pin (51).
(E) Slide the clamping bar (12) back into place and tighten the clamping bar screws (11).
(F) Check that the meter tap and drain plugs (30, 31) are properly tightened.
(G) Repressurize and return the line to service.
9B

Ensure all operating staff are trained in

the safe operation of this an all other
pressurized equipment.

To remove the orifice plate

(a) Ensure that the fitting is completely depressurized.

(b) Loosen the clamping bar screws (11).
(c) Remove the clamping bar (12) and seal bar (9G).
(d) Rotate the plate carrier pinion gear (5) to raise the plate carrier assembly.
(e) Remove the orifice plate (13) and seal assembly (8H, 8K) from the plate carrier (8).
(f ) Extract the orifice plate (13) from the seal.

To replace the orifice plate

(A) Reinstall the orifice plate (13) into the seal.

(B) Install the seal assembly (8H, 8K) into the plate carrier (8), ensuring that the orifice plate bevel
faces downstream.
(C) Insert the plate carrier assembly into the fitting and lower it using the plate carrier pinion gear (5).
(D) Replace the seal bar (9G) and clamping bar (12).
(E) Tighten the clamping bar screws (11).
9G
(F) Check that the meter tap and drain plugs

8
(30, 31) are properly tightened.
8H
(G) Repressurize and return the line to

13
service.
8K

11

13
11

12
5

These instructions are attached to the body of each

Canalta Single Chamber Orifice Fitting. Ensure that all
operating staff are fully trained in the safe operation of
this and all other pressurized equipment.

12

WARNING: PRESSURIZED UNIT.

51

Ensure all operating staff are trained in

the safe operation of this an all other
pressurized equipment.

31
30

18

30

31

19

ADDITIONAL PRODUCT LINES

Canalta also offers these other high quality product lines. Visit us on the web at
www.canaltaflow.com to get all the information, or contact us to request print materials.
The Canalta Dual Chamber Orifice Fitting
A high quality, high accuracy orifice fitting manufactured in a wide selection of sizes
and materials, the Canalta Dual Chamber Orifice Fitting is designed and constructed
to allow for orifice plate inspection or replacement under pressure without interruption in the flow line.
Available as fitting only or with complete meter run, 150# - 2500# ANSI ratings, with
carbon or stainless steel internals and a variety of connection configurations.

Parts, Accessories & Repair Kits

Parts and repair kits available for Single and Dual Chamber Orifice
Fittings, meter runs and flow conditioning solutions.
Our parts and accessories offerings are interchangeable with the
current industry standard orifice fitting brand, making Canalta
Orifice Fitting internals suitable for re-builds and re-works of our
competitors product lines at substantial cost savings.

CONTACT INFORMATION

Phone: 403.342.4494 Email: sales@canaltaflow.com

Fax: 403.346.7110
Web: www.canaltaflow.com

Call Us Toll Free: 1-855-CANALTA

6759 65th Avenue
Red Deer, AB T4P 1X5
CANADA
Find a list of our global distribution partners at www.canaltaflow.com/global
The "Canalta Flow Measurement" name and logo are trademarks of Canalta Controls Ltd. All other trademarks are the property of their respective companies.
All information presented here is for information purposes only. Though every effort has been made to ensure their accuracy, the contents of this publication shall not be
construed as warranties or guarantees, expressed or implied, regarding the products or services described herein, or their use or applicability. Due to Canaltas commitment
to quality and innovation, all product designs, specifications and information material, including the contents of this publication, are subject to change without notice.
Responsibility for the proper selection, maintenance and use of any product remains with the customer. SAFETY FIRST.
Copyright, trademark and other forms of proprietary rights protect the contents of this publication.
2011 Canalta Controls Ltd. All rights reserved. Unauthorized reproduction in whole or in part is prohibited.