How it works
Knife gate
The number that matters
Nominal pressure
10bar
The pressure class of the valve body at 20 °C. Working limits depend on the medium and its temperature.
Construction
Parts and materials
The gate valve is designed to be installed on the pipeline as a shut-off device and regulate the flow of medium in water supply systems (except drinking water supply systems) and chemical industry.
The principle of operation of the gate valve is to move the gate (knife) perpendicular to the flow of medium. When the diameter of the nominal bore of the pipeline is completely blocked, the flow is stopped, and when it is partially blocked, the flow is adjusted.
The principle of operation of the pneumatic actuator is based on the movement of the built-in piston due to compressed air, which is supplied to the system from a compressor or tank.
Pneumatic actuator is based on the movement of the built-in piston by compressed air.
Overall and installation dimensions DNOVA GVKR3431M-1W-Fb-2P1 knife gate gate valves, body material - carbon steel, knife material - stainless steel AISI 304, seal - metal, pneumatic actuator:
| DN | L, mm | D, mm | D1, mm | D2, mm | D0, mm | H1, mm | T, mm | d, mm | ● | O | N-Th, mm | G |
| 50 | 48 | 165 | 125 | 99 | 100 | 417 | 12 | 18 | 4 | 0 | 4-M16 | 1/2″ |
| 65 | 48 | 165 | 145 | 118 | 100 | 460 | 12 | 18 | 4 | 0 | 4-M16 | 1/2″ |
| 80 | 51 | 200 | 160 | 132 | 100 | 510 | 12 | 18 | 4 | 4 | 8-M16 | 1/2″ |
| 100 | 51 | 220 | 180 | 156 | 100 | 600 | 12 | 18 | 4 | 4 | 8-M16 | 1/2″ |
| 125 | 57 | 250 | 210 | 181 | 100 | 628 | 12 | 18 | 4 | 4 | 8-M16 | 1/2″ |
| 150 | 57 | 285 | 240 | 211 | 125 | 780 | 14 | 23 | 4 | 4 | 8-M20 | 1/2″ |
| 300 | 76 | 445 | 400 | 370 | 160 | 1232 | 16 | 23 | 6 | 6 | 12-M20 | 1/2″ |
| 400 | 89 | 565 | 515 | 480 | 200 | 1528 | 20 | 27 | 10 | 6 | 16-M24 | 1/2″ |
Materials DNOVA GVKR3431M-1W-Fb-2P1 knife gate gate valves, body material - carbon steel, knife material - stainless steel AISI 304, seal - metal, pneumatic actuator:
| № | Part name | Material |
| 1 | Body | WCB steel |
| 2 | Schieber | SS304 stainless steel |
| 3 | Guide seal | PTFE |
| 4 | Packing | PTFE |
| 5 | Gland packing | WCB steel |
| 6 | Rack | Q235 steel |
| 7 | Pin | steel 45 |
| 8 | Patron | WCB steel |
| 9 | Rod | steel 45+Cr |
| 10 | Switch | - |
| 11 | Rack head | cast iron GGG40 |
| 12 | Pneumatic cylinder | - |
| 13 | Solenoid valve | - |
| 14 | Filter | - |
| 15 | Wedge | WCB steel |
- Body material
- Carbon steel
- Stopper Material
- stainless steel AISI 304
- Maximum allowable temperature
- 400 °C
- Connection type
- Compact flanged
- Control type
- Pneumatic actuator
- Gate valve type
- Knife Gate Valve
- Nominal pressure
- 10 bar
- Type of seal
- Metal
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal