DUR O LOK
DUR O LOK ® couplings are all-purpose,
®
lightweight connectors designed to replace
standard ANSI flanges.
The D U R O L O K ® coupling meets the requirements of the following codes:
ASME Boiler and Pressure Vessel Code, Section VIII
ASME B31.1, Code for Pressure Piping
ASME B31.3, Code for Process Piping
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DUR O LOK ®
Compact Pipe Coupling
DUR O LOK® Materials DUR O LOK® Quality
• Carbon steel • Designed to ASME B&PV Code
• Stainless steel - 304, Section VIII, ASME B31.1 and
316, 321 ASME B31.3
• Other materials available • Quality assurance to
• Material traceability ISO 9001:2000
available
DUR O LOK® Pipe Couplings - Dimensions (inches), Ratings (PSI), and Assumed Moments (ft-lb)
Data provided below is for the o-ring design. Similar information is available upon request for the high temperature gasket seal design.
“D” “B” “A” “C” “L” “W” Approx. Pressure Rating (PSI)*
Pipe Pipe Pipe Pipe Overall Tapered Overall Nominal Weight Carbon 304 Stain. Assumed
Size Sched. O.D. I.D. Diameter Ring length Length Wall (lbs.) Steel Steel Moment (ft-lb)
1 40 1.32 1.05 2.50 1.47 3.50 0.14 1.99 1475 1229 33
1 80 1.32 0.96 2.50 1.47 3.50 0.18 2.10 2850 2374 33
1 1/4 40 1.66 1.38 2.85 1.47 3.50 0.14 2.41 1550 1291 59
1 1/4 80 1.66 1.28 2.85 1.47 3.50 0.19 2.61 2800 2332 59
1 1/4 160 1.66 1.16 2.85 1.47 3.50 0.25 2.81 4650 3873 59
1 1/2 40 1.90 1.61 3.13 2.00 4.00 0.15 3.71 2250 1874 82
1 1/2 80 1.90 1.50 3.13 2.00 4.00 0.20 4.00 3850 3207 82
1 1/2 160 1.90 1.34 3.13 2.00 4.00 0.28 4.38 5900 4915 82
1 1/2 xxs 1.90 1.10 3.13 2.00 4.00 0.40 4.82 8100 6747 82
2 40 2.38 2.07 3.55 2.00 5.00 0.16 4.70 1850 1541 140
2 80 2.38 1.94 3.55 2.00 5.00 0.22 5.25 3350 2791 140
2 160 2.38 1.69 3.55 2.00 5.00 0.35 6.19 5600 4665 140
2 1/2 40 2.88 2.47 4.21 2.00 6.00 0.21 7.16 2100 1749 266
2 1/2 80 2.88 2.32 4.21 2.00 6.00 0.28 8.10 3500 2916 266
2 1/2 160 2.88 2.13 4.21 2.00 6.00 0.38 9.19 4700 3915 266
3 10 3.50 3.26 4.95 2.00 6.50 0.12 8.09 350 292 431
3 40 3.50 3.07 4.95 2.00 6.50 0.22 9.81 1600 1333 431
3 80 3.50 2.90 4.95 2.00 6.50 0.30 11.20 2900 2416 431
3 160 3.50 2.62 4.95 2.00 6.50 0.44 13.23 3900 3249 431
3 1/2 40 4.00 3.55 5.45 2.00 7.00 0.23 11.75 1650 1374 599
3 1/2 80 4.00 3.36 5.45 2.00 7.00 0.32 13.64 2850 2374 599
4 10 4.50 4.26 5.95 2.00 7.50 0.12 10.53 325 271 804
4 40 4.50 4.03 5.95 2.00 7.50 0.24 13.70 1550 1291 804
4 80 4.50 3.83 5.95 2.00 7.50 0.34 16.21 2400 1999 804
4 120 4.50 3.62 5.95 2.00 7.50 0.44 18.55 2700 2249 804
4 160 4.50 3.44 5.95 2.00 7.50 0.53 20.54 2700 2249 804
5 40 5.56 5.05 7.35 3.10 8.50 0.26 26.27 1750 1458 1363
5 80 5.56 4.81 7.35 3.10 8.50 0.37 30.45 2450 2041 1363
6 40 6.63 6.07 8.47 3.10 9.50 0.28 34.25 1600 1333 2124
6 80 6.63 5.76 8.47 3.10 9.50 0.43 41.51 2350 1958 2124
8 40 8.63 7.98 10.65 3.10 9.50 0.32 49.72 1350 1125 4202
8 80 8.63 7.63 10.65 3.10 9.50 0.50 60.84 1825 1520 4202
*DUR O LOK® Pipe Couplings - Note: Values for dimensions and weights are nominal; please contact Customer Service for exact values. Maximum Temperature: 400°F
(204°C) with Viton o-ring, 450°F (232°C) with silicone rubber o-ring. Please note: Grafoil® limit in air or oxygen 850°F (454°C).
BETE Fog Nozzle, Inc. • 50 Greenfield Street • Greenfield, MA 01301
Phone: 413-772-2166 • Fax: 413-772-6729 • e-mail: sales@bete.com • www.bete.com
©2003 BETE Fog Nozzle, Inc. All rights reserved.
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®2004 BETE Fog Nozzle, Inc., all rights reserved
Save Time and Money with Fast,
Simple, Lightweight DUR O LOK ®
Pipe Couplings Tapered
Material
18-8 SS
Set Screw
I.D.
Hub
Split
Coupler
Hub
O-Ring Tapered O.D.
or High
Temperature
Gasket
Wedge Shaped Split Coupler
Teeth
The DUR O LOK® wedge system
The heart of the DUR O LOK® design is the with a tapered inside diameter slides
system of wedge-shaped, circumferential teeth over the split coupler ring seg-
located on the outside diameter of the hubs ments, forcing them together and
and on the inside diameter of the mating split holding them firmly in place. The
coupler. The wedging action of the teeth com- tapered retaining ring is secured with
presses the gasket and brings the hub ends a set screw. The entire connection
into contact with each other. The outside process can be accomplished in less than a
diameter of the split coupler is tapered. A ring minute, without wrenches.
Patented and patents pending
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®2004 BETE Fog Nozzle, Inc., all rights reserved
DUR O LOK
The Light Weight, Threadless, Boltless Coupling Alternative
®
DUR O LOK® couplings are all-purpose, lightweight connectors designed
The performance to replace standard ANSI flanges. The design of DUR O LOK®
superiority, space, couplings ensures reliable operation over a wide range of temperatures.
DUR O LOK® couplings have been used in refinery applications for many
and weight years and are specified by UOP for use in CCRTM PlatformingTM, OleflexTM
provided by and SorbexTM processing units, as well as in OptimixTM
DUR O LOK® FCC feed nozzles.
couplings make DUR O LOK® pipe couplings are designed to reduce
them the maintenance, reduce materials costs, and reduce space
preferred choice requirements for pipe racks.
in many pipe- Features:
connecting • The DUR O LOK® coupling meets the requirements of the
applications. following codes:
--ASME Boiler and Pressure Vessel Code, Section VIII
--ASME B31.1, Code for Pressure Piping
--ASME B31.3, Code for Process Piping
• Compact - length and outside diameter reduced by 30% - 50%,
compared to flanges. Allows double the number of pipes per rack.
Provides improved external flow distribution for immersed couplings.
Reduces shadowing for couplings used in process vessels.
• Light weight - weight reduced by 60% - 90%, compared to flanges
• Simple - Number of parts reduced by 55% - 75% per connection,
compared to flanges.
• Fast - Save up to 10-15 minutes to make or break each
connection.
• Non-restrictive - Full port inside diameter eliminates pressure
drop and allows "pigging".
• Smooth interior bore - Minimizes flow disturbances. Eliminates
attrition in catalyst and other solids conveying applications.
• Boltless and threadless - Only safety set screws required. No
torque measurements required. No bolt holes to align. No need to
tighten connections after thermal cycling. Simplifies painting and
insulating.
• Self-energized seal - Sealing force increases with pressure.
Less chance of leaks.
• Thermally stable - Design minimizes thermal expansion effects on
sealing. Tolerates very rapid changes of external or internal
temperatures.
• No interference fits or metal-to-metal sealing - Higher reliability.
Less susceptible to damage.
CCRSM Platforming® process, which produces high-octane gasoline or petrochemical precursors; C3 Oleflex® process, which produces polymer-grade propylene from propane feedstock; C4
Oleflex® processes, which separate, convert and upgrade C4 olefin streams to produce MTBE, acetylene-free crude butadiene, butene-1, isobutylene, and completely saturated LPG; Sorbex®
processes, which separate components from mixtures by liquid-phase adsorption; Parex® process, which recovers high-purity para-xylene from streams containing mixed xylene isomers and
other aromatic and non-aromatic impurities; Molex® process, which separates paraffins from branched chain and cyclic hydrocarbons; MX-Sorbex® process, which recovers meta-xylene
from streams containing mixed A8 isomers.
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Heavy Duty Couplings Don
DUR O LOK® / Flange - Weight and Dimension Comparison
DUR O LOK® Weld Neck Flanges
Flange Flange
Overall Overall Approx Flange Assembly Assembly
Pipe Pipe Diameter Length Weight Flange OD Length Weight
Size Schedule (in.) (in.) (lb.) Class (in.) (in.) (lb.)
1 80 2.50 3.50 1.99 2500 6.25 7.0 26.6
1.25 80 2.85 3.50 2.61 600 5.25 5.2 13.1
1.5 XXS 3.13 4.00 4.82 2500 8 8.8 57.0
2 80 3.55 5.00 5.25 2500 9.25 10.0 83.3
2.5 160 4.21 6.00 9.19 600 7.5 6.2 38.0
3 80 4.95 6.50 11.20 1500 10.5 9.2 102.5
3.5 80 5.45 7.00 13.64 600 9 6.8 63.2
4 160 5.95 7.50 20.54 2500 14 15.0 301.2
6 80 8.47 9.50 41.51 600 14 9.2 173.5
8 80 10.65 9.50 60.84 600 16.5 10.5 259.1
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BETE ®2004 BETE Fog Nozzle, Inc., all rights reserved
Don’t Have to Weigh a Ton
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®2004 BETE Fog Nozzle, Inc., all rights reserved
