Unidirectional Knife Gate Valve
This unidirectional knife gate valve is a lug type knife gate valve used on industrial pipeline for on-off operation.
TOT Valve is made of high-quality stainless steel raw materials, produced by casting or forging, and meets API standards.
The unique valve structure eliminates potential clogging shutoff when the valve is dealing with flow with particles.
Contact us now to get the best ex-factory knife gate valve prices.
Description
TOT Valve is a disc type unidirectional knife gate valve, a stainless steel knife gate valve for your industrial pipeline opening and closing operations.
The structure of the TOT valve body and valve seat can eliminate the blockage caused by the flow of fine particles in your application. In addition, our bevel knife gate design can generate huge shear stress, which is more conducive to the penetration of fluids in your pipeline.
The bottom of our gate fixture port uses a claw design instead of a groove to eliminate any potential blockage when your valve is closed.
The preloaded valve seat is adjustable to meet different sealing levels and compensate for normal seat wear.
We add a PTFE elastic point guide on the gate port, which prevents metal-to-metal contact between the gate and the valve body, ensuring your service life.
Knife Gate Valve Features
- Integral full-bore structure, smooth flow, easy assembly, less possibility of housing leakage.
- Angled blade, strong cutting force, good sealing
- Gate thickness can be increased to meet higher pressures
- Side-entry seat is replaceable, reducing maintenance costs
- Dual thrust bearings minimize the torque required for operation
- We provide grease for easy bearing lubrication
| Size Range | DN50~600mm NPS 2″-24″ （Larger size on request） |
|---|---|
| Max Working Press | DN50~DN600:10Bar, NPS2~NPS24:150Psi |
| Temp. Range | -29 ~ +800℃ |
| Seal Tightness | According to MSS SP-81 Standard |
| Body Material | Stainless Steel (CF8, CF3, CF8M, CF3M) |
| Gate Material | Stainless Steel Chrome Plated |
| Seat Material | Stainless Steel(CF8,, CF3, CF8M, CF3M) + STL/EPDM (120°C) /Viton(200°C)/PTFE(200°C) /NBR(90°C) |
| Face to Face | MSS SP-81 Standard |
| Flange Standard | ASME B16.5, EN1092-1 |
| Applications | Pulp & Paper, Water Treatment，Beverage & Food，Fine Chemical, Power Planet，Steel Industry, etc. |
Main External and Connection Dimension
TOT Valve can provide you with API knife gate valve of various dimension and models.
We list some knife gate valve dimensions, can be used for your reference. If you do not have the gate valve size you need, you can contact us immediately. Our professional sales manager will contact you and can provide you with exclusive ODM and OEM services.
| DN | A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|---|
| 50 | 48 | 135 | 106 | 100 | 129 | 85 | 180 | 315 |
| 65 | 48 | 155 | 106 | 115 | 147 | 85 | 180 | 350 |
| 80 | 51 | 175 | 106 | 121 | 168 | 85 | 200 | 375 |
| 100 | 51 | 163 | 106 | 138 | 192 | 85 | 200 | 415 |
| 125 | 57 | 192 | 120 | 160 | 215 | 87 | 250 | 465 |
| 150 | 57 | 216 | 130 | 185 | 245 | 87 | 280 | 520 |
| 200 | 70 | 271 | 130 | 235 | 302 | 105 | 300 | 645 |
| 250 | 70 | 335 | 140 | 300 | 355 | 105 | 350 | 760 |
| 300 | 76 | 381 | 160 | 350 | 401 | 105 | 400 | 860 |
| 350 | 76 | 436 | 180 | 400 | 465 | 117 | 450 | 982 |
| 400 | 89 | 505 | 180 | 455 | 511 | 117 | 450 | 1083 |
Thrust & Torque Data Sheet
This is the relevant data obtained by TOT Valve after rigorous testing. I hope it will help you choose the right knife gate valve.
| DN | Thrust (N) | Torque (N*M) | Stem Turns | Stem Size |
|---|---|---|---|---|
| 50 | 3450 | 20 | 15 | Tr20*4 LH |
| 65 | 3520 | 25 | 18 | Tr20*4 LH |
| 80 | 2750 | 30 | 23 | Tr20*4 LH |
| 100 | 3900 | 35 | 28 | Tr20*4 LH |
| 125 | 5900 | 45 | 28 | Tr22*5 LH |
| 150 | 6100 | 65 | 33 | Tr22*5 LH |
| 200 | 10000 | 90 | 37 | Tr28*6 LH |
| 250 | 15000 | 140 | 45 | Tr28*6 LH |
| 300 | 20000 | 185 | 52 | Tr28*6 LH |
| 350 | 24000 | 225 | 60 | Tr32*6 LH |
| 400 | 33500 | 290 | 69 | Tr32*6 LH |
| 450 | 35000 | 405 | 66 | Tr35*6 LH |
| 500 | 38000 | 480 | 73 | Tr40*7 LH |
| 600 | 40000 | 610 | 88 | Tr40*7 LH |
* We are not just providing simple quotes but experts in selection, calculation, and drawing.
