®

World Class Performance

in Abrasive, Scaling and
Corrosive Slurries, Sludge,
Liquids, and Bulk Solids

INSAMCOR - LW
Lugged Wafer Knife Gate Valves
 ®

DFC’s purpose is to solve typical and

perennial valve problems. We achieve
this by providing quality valves that
provide the lowest cost of ownership
and operation, highest reliability and
minimum lifetime maintenance.

DFC’s Insamcor range of lugged wafer

ductile iron & stainless steel bi-
directional knife gate valves feature a
unique moulded body seal with no seat
pockets or cavities providing trouble
free operation in slurry applications.

Design Features and Advantages

Ÿ Mechanically retained moulded body seal

Ÿ Gate guided through full length of the stroke

DUCTILE IRON - INSAMCOR® LW Ÿ Self-cleaning flush out corners prevent deposit
build-up in sealing area

Ÿ Full bore unrestricted flow area - no seat pockets

or cavities

Ÿ Bi-directional leak-proof sealing

Ÿ 150 psi CWP (10 bar) pressure rating for all sizes

Ÿ Stuffing box & gland arrangement ensures leak-

proof sealing to atmosphere

Ÿ Secondary transverse seal increases the wear

life of the primary seal

Ÿ Built in PTFE scrapers keep the blade free from

any foreign matter over the whole width of the
blade during operation

Ÿ Yoke design allows for easy mounting of

proximity and limit switches and also includes
lockouts in both the open and closed position

Ÿ The mounting plate is designed to accept manual,

pneumatic or electric actuation
STAINLESS STEEL - INSAMCOR® LW

INSAMCOR is a registered trademark of Dynamic Fluid Control (Pty) Ltd or its affiliates.
 ®

DUCTILE IRON - INSAMCOR® LW STAINLESS STEEL - INSAMCOR® LW

OPEN & CLOSED OPEN & CLOSED

Sealing Principle
In the fully open position the valve seals to atmosphere the blade and the flush-out corners create turbulent flow of
through a combination stuffing box acting as the primary the media over the seating area. The turbulent flow
seal and a secondary transverse seal. The purpose of the removes all the sediment from the seat which allows the
secondary seal is to act as a scraper and to extend the life gate to close on the seating area that is free from any
of the primary seal. slurry build-up.

As the valve closes the gate remains in contact with the When the valve opens the gate again remains in contact
mechanically retained moulded body seal throughout the with the body seal and the gate is wiped clean by scraper
stroke and is guided by the valve body. When the gate blades that ensure trouble free operation during the next
approaches the fully closed position, the angle between closing cycle.

Specifications Optional
LW - DUCTILE IRON LW - STAINLESS STEEL
Pressure Rating
Sizes 2"-6" (DN50-DN150) available as a
Size Range 2" - 24" (DN50 - DN600) 2" - 24" (DN50-DN600) 230 psi CWP (16bar) valve
Pressure 150psi CWP (10 bar) 150psi CWP (10 bar) Gate
Different gate materials available on request
Body FBE coated Ductile Iron, CF8M-Stainless Steel
or etch primed Ductile Iron Actuators
with SRL faces & bore Manual, manual bevel gear, pneumatic,
electro mechanical, hydraulic hand lever
Seals Molded Nitrile Body Seal Machined PTFE
Deflector Cones
Yoke Fusion bonded epoxy 304L Stainless Steel Replaceable Ni-hard wear cone with gasket
Polyurethane deflector cones
Gate 304L Stainless Steel 316L Stainless Steel
Seals
Flange Drilling ANSI B16.5 Class 150 ANSI B16.5 Class 150 Various elastomers available
AS 2129 Table D & E AS 2129 Table D & E Ports
PN 10 & PN 16 PN 10 & PN 16
Vee & pentagonal ports for flow control

Copyright © 2011 Dynamic Fluid Control (Pty) Ltd

 ®

Features
1
1. Spindle cover - to protect the spindle against slurry
2 splatter
2. Drive Mechanisms – pneumatic cylinder, electric,
hydraulic cylinder, manual bevel gear and handwheel
with rising stem
3 3. Thrust assembly - all sizes fitted standard with
thrust bearings
4 4. Mounting plate - designed to accept manual,
pneumatic or electric actuation without any
modification
5 5. Yoke - design allows for easy mounting of proximity
and limit switches

6 6. Lockout - provision for lockouts in the open and

closed position (standard on all sizes)
7. Moulded seal - mechanically retained resilient
moulded seal ensures that the blade is guided
throughout its travel and that bi-directional leakproof
sealing is obtained
8. Stuffing Box - external seal arrangement to
atmosphere by means of an external stuffing box
arrangement and gland packing
9. Scrapers - PTFE scrapers to keep the blade free
from any foreign matter over the whole width of the
gate during operation
10. Flushout corners - self cleaning flushout corners
prevent deposit build up in sealing area
11. Seat pockets - full bore, unrestricted flow area.
No valve seat pocket or cavity
7 12. Gates - polished stainless steel gates with bevelled
edge at the base to cut through dense media

12

8 10

11
9
 ®

Dimensions and Weights of the Ductile Iron LW

Ø=I
Ø=J
H=
D=

E=

F=
C=

A= B= G=

Dimensions (mm) and Weights (kg)

Valve Weight Weight Weight
A B-FBE B-SRL C D E F G H I J
Size MH BG AC
50 132 43 49 65 378 500 380.5 303 250 200 100 12 23 17
65 146 46 52 65 428 500 380.5 303 250 200 100 16 26 21
80 126 46 52 89 480 500 484 303 250 200 100 15 24 24
100 142 52 58 98 548 568 552 303 250 200 100 20 29 27
125 200 56 62 118 448 568 552 303 250 200 160 24 33 33
150 200 56 64 130 713 733 715 328 315 300 160 29 34 40
200 303 60 68 155 884 1004 874 328 400 300 200 62 65 83
250 322 68 76 161 1019 1039 1017 328 400 300 250 83 85 118
300 374 78 86 187 1234 1254 1185 328 500 400 300 102 101 145
350 444 78 86 222 1388 1400 1354 328 500 400 300 131 134 194
400 504 100 108 251 1508 1528 1474 328 500 400 400 182 182 263
450 568 114 124 284 1709 1739 1691 351 720 600 450 208 222 336
500 622 127 137 311 1871 1901 1853 351 720 600 450 268 282 396
600 712 154 164 355 2104 2134 2136 351 720 600 550 380 395 517

Dimensions (inches) and Weights (lbs)

Valve Weight Weight Weight
A B-FBE B-SRL C D E F G H I J
Size MH BG AC
2" 5.20 1.69 1.93 2.59 14.88 19.69 14.98 11.93 9.84 7.87 3.94 26 50 37
2.5" 5.75 1.81 2.05 2.59 16.86 19.69 14.98 11.93 9.84 7.87 3.94 35 57 46
3" 4.96 1.81 2.05 3.50 18.90 19.69 19.06 11.93 9.84 7.87 3.94 33 52 52
4" 5.59 2.05 2.28 3.86 21.57 22.36 21.73 11.93 9.84 7.87 3.94 44 63 59
5" 7.87 2.20 2.44 4.65 17.64 22.36 21.73 11.93 12.40 7.87 6.30 52 72 72
6" 7.87 2.20 2.52 5.12 28.07 28.86 28.15 12.91 15.75 11.81 6.30 63 75 89
8" 11.93 2.36 2.68 6.10 34.80 39.53 34.41 12.91 15.75 11.81 7.87 136 143 183
10" 12.68 2.68 2.99 6.34 40.12 40.91 40.04 12.91 19.69 11.81 9.84 183 187 260
12" 14.72 3.07 3.39 7.36 48.58 49.37 46.65 12.91 19.69 15.75 11.81 224 222 319
14" 17.48 3.07 3.39 8.74 54.65 55.12 53.31 12.91 19.69 15.75 11.81 288 295 427
16" 19.84 3.94 4.25 9.88 59.37 60.16 58.03 12.91 28.35 15.75 15.75 401 401 579
18" 22.36 4.49 4.88 11.18 67.28 68.46 66.57 13.82 23.62 17.72 458 489 740
20" 24.49 5.00 5.39 12.24 73.66 74.84 72.95 13.82 28.35 23.62 17.72 590 621 874
24" 28.03 6.06 6.46 13.98 82.83 84.02 84.09 13.82 28.35 23.62 21.65 837 870 1139

Copyright © 2011 Dynamic Fluid Control (Pty) Ltd

 ®

Dimensions and Weights of the Stainless Steel LW

Ø=I
Ø=J
H=

E=

F=
D=
C=

A= B= G=

Dimensions (mm) and Weights (kg)

Valve Weight Weight Weight
A B C D E F G H I J
Size MH BG AC
50 132 43 65 378 500 380 303 200 200 100 12 23 17
65 146 46 65 428 500 380 303 200 200 100 16 26 21
80 126 46 89 480 500 484 303 250 200 100 15 24 24
100 142 52 98 548 568 552 303 250 200 100 20 29 27
125 200 56 118 448 568 552 303 250 200 160 24 33 33
150 200 56 130 713 733 715 328 315 300 160 29 34 40
200 303 60 155 884 1004 874 328 400 300 200 62 65 83
250 322 68 161 1019 1039 1017 328 400 300 250 83 85 118
300 374 78 187 1234 1254 1185 328 500 400 300 102 101 145
350 444 78 222 1388 1400 1354 328 500 400 300 131 134 194
400 504 102 251 1508 1528 1474 328 500 400 400 182 182 263
450 568 114 284 1709 1739 1691 351 720 600 450 208 222 336
500 622 127 311 1871 1901 1853 351 720 600 450 268 282 396
600 712 154 355 2104 2134 2136 351 720 600 550 380 395 517

Dimensions (inches) and Weights (lbs)

Valve Weight Weight Weight
A B C D E F G H I J
Size MH BG AC
2" 5.20 4.69 2.59 14.88 19.69 14.98 11.93 7.87 7.87 3.94 26 50 37
2.5" 5.75 1.81 2.59 16.86 19.69 14.98 11.93 7.87 7.87 3.94 35 57 46
3" 4.96 1.81 3.50 18.90 19.69 19.06 11.93 9.84 7.87 3.94 33 52 52
4" 5.59 2.05 3.86 21.57 22.36 21.73 11.93 9.84 7.87 3.94 44 63 59
5" 7.87 2.20 4.65 17.64 22.36 21.73 11.93 9.84 7.87 6.30 52 72 72
6" 7.87 2.20 5.12 28.07 28.86 28.15 12.91 12.40 11.81 6.30 63 75 89
8" 11.93 2.36 6.10 34.80 39.53 34.41 12.91 15.75 11.81 7.87 136 143 183
10" 12.68 2.68 6.34 40.12 40.91 40.04 12.91 15.75 11.81 9.84 183 187 260
12" 14.72 3.07 7.36 48.58 49.37 46.65 12.91 19.69 15.75 11.81 224 222 319
14" 17.48 3.07 8.74 54.65 55.12 53.31 12.91 19.69 15.75 11.81 288 295 427
16" 19.84 4.02 9.88 59.37 60.16 58.03 12.91 19.69 15.75 15.75 401 401 579
18" 22.36 4.49 11.18 67.28 68.46 66.57 13.82 28.35 23.62 17.72 458 489 740
20" 24.49 5.00 12.24 73.66 74.84 72.95 13.82 28.35 23.62 17.72 590 621 874
24" 28.03 6.06 13.98 82.83 84.02 84.09 13.82 28.35 23.62 21.65 837 870 1139
 ®

Ductile Iron - Soft Rubber Lined operating pressure. The body seal must be
INSAMCOR ® LW Specification machined PTFE and must be mechanically retained
in the valve body. The gate’s sides must remain in
The knife gate valve will be wafer style and semi
contact with the body seal during opening and
lugged with the bore and connecting faces soft
rubber lined. The design will allow for bi-directional closing of the valve and the gate must be guided by
flow against maximum operating pressure. The body the valve body. The sealing to atmosphere must be
seal must be fully moulded with a lip seal and must through a stuffing box and gland arrangement. The
be mechanically retained in the valve body. The internal bore will include self-cleaning flush out
gate’s sides must remain in contact with the body corners and there will be no seat pockets or cavities
seal during opening and closing of the valve and the in the bore for media to settle in. The valve must
gate must be guided by the valve body. The sealing incorporate PTFE scrapers to keep the blade free
to atmosphere must be through a combination from any foreign matter over the whole width of the
stuffing box acting as the primary seal and a gate during operation and PTFE anti-friction pads to
secondary transverse seal. The internal bore will keep the gate centralised and eliminate scoring
include self-cleaning flush out corners and there will between the gate and the body.
be no seat pockets or cavities in the bore for media to
settle in. The valve must incorporate PTFE scrapers Applications
to keep the blade free from any foreign matter over With a succesfull history of more than 25 years,
the whole width of the gate during operation. Insamcor knife gate valves are suited for a wide
variety of industrial applications.

Ductile Iron - Fusion Bonded Epoxy DFC has one of the largest installed bases of
INSAMCOR ® LW Specification mineral processing valves in the world and
manufacturing facilities in South Africa, Finland and
The knife gate valve will be wafer style and semi the USA. With sales and support facilities in
lugged with a fusion bonded epoxy coated ductile Australia, North and South America, Europe, Asia,
iron body. The design will allow for bi-directional flow the middle East and Africa, DFC’s staff and agents
against maximum operating pressure. The body are readily available and committed to solving your
seal must be fully moulded with a lip seal and must problems and providing you with the best possible
be mechanically retained in the valve body. The service wherever your business is located.
gate’s sides must remain in contact with the body Insamcor LW valves are used in a wide array of
seal during opening and closing of the valve and the industries and applications. Examples include:
gate must be guided by the valve body. The sealing
Mining Industry
to atmosphere must be through a combination Ÿ Grinding
stuffing box acting as the primary seal and Ÿ Size seperation - hydro cyclones
secondary transverse seal. the internal bore will Ÿ Flotation
include self-cleaning flush out corners and there will Ÿ Thickening
be no seat pockets or cavities in the bore for media to
settle in. The valve must incorporate PTFE scrapers Coal Fired Power Plants
to keep the blade free from any foreign matter over Ÿ Lime slurry
Ÿ Fly ash slurry
the whole width of the gate during operation.
Ÿ Scrubber slurry
Stainless Steel - INSAMCOR ® LW
Specification Other Industries
Ÿ Coal washing
The knife gate valve will be wafer style and semi Ÿ Steel
lugged with a CF8M stainless steel body. The design Ÿ Chemical
will allow for bi-directional flow against maximum Ÿ Pulp & paper

Copyright © 2011 Dynamic Fluid Control (Pty) Ltd

 World Class Performance Slurry Valves

®
RF Valve and aiRFlex pinch valves
® ®
DFC SKG F & W slurry valves
The world’s most complete line of pinch Heavy duty bi-directional knife gate valve
valves in standard ASME/ANSI B16, DIN designed for slurry applications
and ISO face-to-face dimensions from 1"
to 60" (DN25 to DN1500) Flanged & Wafer design available
Patented non-stretch, anti-stress folds Packingless design
in all elastomer tubes
Full port formed by two heavy duty
In-line elastomer tube change elastomer sleeves
capability without removing the valve
from the pipeline No seat cavity for unwanted solids to build
and prevent gate closure
Most advanced wear sensing
technology for preventative No metal parts in contact with flowing media
maintenance alert

Saunders A Type and KB Type diaphragm valves

®
Insamcor MH slurry valves
®

Simplicity in design coupled with more than 75 years of Bi-directional high pressure wafer mono-flange
cutting edge innovation has resulted in the knife gate valves suitable for end-of-line installation
Saunders diaphragm’s ability to handle a
Sizes 2" to 24" (DN50 - DN600)
wider range of fluids than any other valve type
Available in weir and straight through type Available in 230 psi CWP (16 bar) pressure
rating on all sizes
Available in either flanged or screwed ends
Combination re-packable primary transverse
Various lining and diaphragm material seal and secondary stuffing box seal for severe
options applications

DFC manufactures this range under license from Mechanically retained moulded seal with
CPFT Ltd and is only available in selected African no seat pockets
countries.
Gate guided through full length of the stroke

®
Insamcor MLB slurry valves
®
Insamcor PB ported blade slurry valves
Bi-directional large bore wafer mono-flange knife gate Bi-directional ported blade valve suitable
valves suitable for end-of-line installation for slurries containing large particles
Sizes 28" to 48" (DN700 - DN1200) Two heavy duty elastomer sleeves are
compressed against a ported blade
Pressure ratings varies according to size through its entire travel
and application
The ported blade allows granular
Combination re-packable primary transverse slurries of size similar to the blade
seal and secondary stuffing box seal for severe thickness to be drawn through the
applications seals and flushed out of the valve

Mechanically retained moulded seal with Sizes 2" to 24" (DN50 - DN600)
no seat pockets

Gate guided through full length of the stroke

The Americas Operations African Operations Australian Operations - NSW

RF Valves Inc. Dynamic Fluid Control (Pty) Ltd 5 Vangeli St, Arndell Park, NSW, 2148
1342-A Charwood Road 32 Lincoln Road, P.O. Box 156, Seven Hills, NSW, 1730
Hanover, MD 21076, USA Industrial Sites, Benoni South, South Africa Tel: +61-2-8814-9699
Tel: +1-410-850-4404 Fax: +1-410-850-4464 Tel: +27-11-748-0200 Fax: +27-11-421-2749 Fax: +61-2-8814-9666
email:contact@rfvalve.com email:dfc@dfc.co.za M: +61 (0) 499 922 686,
www.rfvalve.com www.dfc.co.za Email: sales@ventomat.com.au
Website: www.ventomat.com.au
European Operations Brazil Operations
RF Valves, Oy. Aveng Industria e Comeercio de Valvulas do Brasil Ltds
Tullitie 9, Address: Rua Álvaro da Silveira, 40 - Santa Margarida
53500 Lappeenranta, Finland Belo Horizonte - Minas Gerais, Brasil
Tel: +358-20-758-1790 Fax: +358-20-785-1799 Tel : +55-31-3658-3656
email:rfvalves@rftek.fi Email address: rfq@rfvalve.com
www.rfvalve.com www.rfvalve.com