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Knife Gate Valve

Knife Gate Valve

Category

Knife gate valves for slurry, sludge and solids-laden media offering reliable isolation, clear flow and robust sealing.


Pipelines carrying sludge, slurry or suspended solids can be difficult to isolate cleanly. Material may collect around the seating area, increase operating force or prevent a conventional valve from closing properly. Knife gate valves are built for these tougher conditions, using a thin gate that moves directly through the media and clears the flow path as it closes.

SVR Global supplies these solutions as a Knife Gate Valve Manufacturer in USA, with configurations intended for process lines where solids handling, compact installation and dependable shutoff are more important than throttling.

What is a Knife Gate Valve?

A knife gate valve is a linear-motion isolation valve that uses a flat gate to open or close the pipeline. As the valve closes, the gate travels across the bore and through the process media before reaching the seat. This direct movement makes the design well suited to services containing sludge, fibres, suspended solids or abrasive particles.

When fully open, the gate retracts away from the main flow path, leaving a largely unobstructed passage through the body. That helps limit areas where solids can settle and keeps pressure loss relatively low during normal flow. Knife gate valves are generally used in fully open or fully closed positions rather than for continuous throttling.

Types of Knife Gate Valves

Bidirectional Knife Gate Valve

Slurry Knife Gate Valve

Through Conduit Knife Gate
Valve

Unidirectional Knife Gate
 Valve

Knife Gate Valve Features

• Full-port flow path with minimal obstruction when open

• Thin gate profile suited to solids-laden and slurry service

• Unidirectional and bidirectional sealing arrangements

• Resilient and metal-seated construction options

• Compact wafer, lug and flanged body configurations

• Manual, pneumatic, electric and hydraulic actuation options

Knife Gate Valve Specifications

Specification

Available Configuration / Standard

Size Range

DN50-DN1000

Pressure Rating

Up to PN50; ASME Class 150-300

Material

Ductile Iron, Carbon Steel, Stainless Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, 254 SMO, Hastelloy C

Grades

ASTM A536 Gr. 60-40-18 / 65-45-12; ASTM A216 WCB; ASTM A351 CF8 / CF8M / CF3 / CF3M / CK3MCuN; ASTM A995 CD3MN; ASTM A351 CE3MN; ASTM A494 CW2M / CX2MW

Seat Materials

NBR, EPDM, FKM/Viton, RPTFE, UHMW, Polyurethane, Metal

Body Styles

Wafer, Lug, Flanged

Operation

Handwheel, Gear Box, Pneumatic, Electric, Lever

Standards

MSS SP-81, MSS SP-135, MSS SP-151, ASME B16.5, EN 1092-1, AWWA C520

Industries Using Knife Gate Valves

• Mining & Mineral Processing

• Water & Wastewater

• Power Generation

• Chemical Processing

• Cement & Aggregate

• Metals & Smelting

• Dredging & Dewatering

• Industrial Slurry Handling





Showing all 5 products

Flanged Knife Gate Valve

Flanged Knife Gate Valve

Flanged Knife Gate Valve Body: Carbon Steel, Ductile Iron, SS316 Knife: SS304, SS316 Disc: SS304, SS316L Wedge: SS304, SS316, SS316L Packing: PTFE Seal Ring: Polyurethane, EPDM, NBR, VITON Yoke: SS304, SS316 Packing Gland: CF8, WCB Nominal Size: DN50 to DN450 Nominal Pressure: Class150 to Class30, PN10 End Type: Flanged Operation: Handwheel, Electric Actuated, Pneumatic Actuated Design and Manufacture Standard: MSS SP-81 Face to Face Dimension: MSS SP-81 Flanged End Dimension: DIN, JIS Inspection and Test: API 598 Dimensions Unit: mm DN L H K 50 178 400 200 65 191 490 200 80 203 510 250 100 229 585 300 125 267 795 350 150 292 1015 350 200 330 1230 400 250 356 1465 450 300 381 1755 500 350 406 2030 500 400 432 2210 600 450 457 2510 750 500 508 2880 750

DETAILS
Through Conduit Knife Gate Valve

Through Conduit Knife Gate Valve

Through Conduit Knife Gate Valve Body: Ductile Iron, WCB, CF8, CF8M Gate: SS304, SS316, SS2205, Stem: SS420, F304, F316 Seat: EPDM, Metal, Viton, PTFE, NBR Nominal Diameter: DN50 to DN500 Nominal Pressure: Class150, PN10, PN16 Operation: Manual, Electric Actuated, Pneumatic Actuated Dimensions DN NPS F-F 50 2” 48 65 2 1/2″ 48 80 3″ 51 100 4″ 51 125 5″ 54 150 6″ 54 200 8″ 70 250 10″ 70 300 12″ 76 350 14″ 76 400 16″ 89 450 18″ 89 500 20″ 114

DETAILS
Slurry Knife Gate Valve

Slurry Knife Gate Valve

Slurry Knife Gate Valve Body: Ductile Iron, Carbon Steel Stem: F304, F316 Gate: F304, F316 Stem Packing: PTFE, Graphite Nominal Diameter: DN50 to DN600 Nominal Pressure: Class150, PN6, PN10, PN16 End Connection: Wafer, Lug Standard Compliance MSS SP-81, T 8691 Face to Face Dimension: MSS SP-81 Pre-temperature Rating: ANSI B16.34 Flanged Dimension: ANSI B16.5, DIN2533, HG20592 Inspection and Test: API 598, T 9092 Dimensions Unit: mm DN L O D M-1 50 54 165 125 4-M16 65 54 185 145 4-M16 80 57 200 160 4-M16 100 57.5 220 180 4-M16 125 59 250 210 4-M16 150 65 285 240 4-M20 200 77 340 295 4-M20 250 78 395 350 8-M20 300 83 445 400 8-M20 350 84 505 460 12-M20 400 92 565 515 12-M24 450 103 615 565 16-M24 500 121 670 625 16-M24 600 121 780 725 12-M27

DETAILS
Bidirectional Knife Gate Valve

Bidirectional Knife Gate Valve

Bi Directional Knife Gate Valve Body: Carbon Steel, Ductile Iron, SS316 Knife: SS304, SS316 Disc: SS304, SS316L Wedge: SS304, SS316, SS316L Packing: PTFE Seal Ring: Polyurethane, EPDM, NBR, VITON Yoke: SS304, SS316 Packing Gland: CF8, WCB Nominal Size: DN50 to DN400 Nominal Pressure: Class150 to Class30, PN10 End Type: Wafer Type, Lug Type Operation: Handwheel, Electric Actuated, Pneumatic Actuated Design and Manufacture Standard: MSS SP-81 Face to Face Dimension: MSS SP-81 Flanged End Dimension: DIN, JIS Inspection and Test: API 598 Dimensions Unit: mm DN A B C D E F G H 50 48 130 106 105 129 85 180 400 65 48 145 106 125 147 85 180 446 80 51 160 106 140 168 85 200 497 100 51 180 106 155 192 85 200 565 125 57 215 120 185 215 87 250 655 150 57 215 130 200 245 87 280 720 200 70 280 130 225 302 105 300 880 250 70 330 140 275 355 105 350 1045 300 76 380 160 325 401 105 400 1175 350 76 440 180 370 465 117 450 1345 400 89 490 180 435 511 117 450 1505

DETAILS
Unidirectional Knife Gate Valve

Unidirectional Knife Gate Valve

Unidirectional Knife Gate Valve Body: Carbon Steel, Ductile Iron, SS316 Knife: SS304, SS316 Disc: SS304, SS316L Wedge: SS304, SS316, SS316L Packing: PTFE Seal Ring: Polyurethane, EPDM, NBR, VITON Yoke: SS304, SS316 Packing Gland: CF8, WCB Nominal Size: DN50 to DN450 Nominal Pressure: Class150 to Class30, PN10 End Type: Wafer Type, Lug Type Operation: Handwheel, Electric Actuated, Pneumatic Actuated Design and Manufacture Standard: MSS SP-81 Face to Face Dimension: MSS SP-81 Flanged End Dimension: DIN, JIS Inspection and Test: API 598 Dimensions PN10 DN L D D1 D2 DO N-Th d H1 50 48 165 125 99 180 4-M16 Φ18 260 65 48 185 145 118 200 4-M16 Φ18 292 80 51 200 160 132 240 8-M16 Φ18 320 100 51 220 180 156 260 8-M16 Φ18 358 125 57 250 210 184 280 8-M16 Φ18 395 150 57 285 240 211 280 8-M20 Φ23 450 175 57 305 265 237 280 12-M20 Φ23 504 200 70 340 295 266 300 8-M20 Φ23 532 250 70 395 350 319 320 12-M20 Φ23 670 300 76 445 400 370 350 12-M20 Φ23 758 350 76 505 460 429 400 16-M20 Φ23 857 400 89 565 515 480 450 16-M24 Φ27 946 450 89 615 565 530 500 20-M24 Φ27 1023

DETAILS
SVR Global Valves Range

Engineered for Performance. Manufactured for Reliability.

Industrial valves manufactured for durability, quality and reliable performance in demanding applications.

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