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Knife Edge Gate Valve

Product Introduction
   Size Range:

     DN50~600mm   NPS 2”-24”  (Larger size on request)

   Max Working Press.:

     DN50~DN250: 10Bar  NPS2~NPS10:150Psi

     DN300~DN450: 7Bar  NPS12~NPS18:90Psi

     DN500~DN600: 4Bar  NPS20~NPS24:60Psi

   Temp. Range:      -29...+800℃
   Seal Tightness:

     According to MSS SP-81

   Body Material:

     Carbon Steel, Stainless Steel, Special Allory

   Gate Material:
     Stainless Steel Chrome Plated, Special Allory
   Seat Material:

     Stainless Steel+STL

     EPDM (120°C) /Viton(200°C)/PTFE(200°C) /NBR(90°C)

   Face to Face:       MSS SP-81
   Flange Standard:

     GB/T 9113.1, JB/T 79.1, HG 20592, ASME B16.5, EN1092-1


     Pulp & Paper,  Water Treatment,Beverage & Food,Fine Chemical, 

     Power Planet,Steel Industry, etc.


The HPZ-Series Knife Edge Gate Valve is a unidirectional wafer knife edge gate valve used on industrial pipeline for on-off operation. 

The structure of body and seat eliminates clogging shutoff for flow with fine particles. Additionally, beveled knife edge helps 

the gate cut through thick media easily. According to different working situation: non-rising stem knife gate valve, wafer knife 

gate valve, lugged knife gate valve, pneumatic knife gate valve, electric knife gate  valve, manual knife gate valve and bevel 

gear knife gate valve are all available.


1.    Body

a)    Integral body with full bore structure ensures smooth flow, easy assembly and smaller shell leakage possibility.

b)   Guide claws design at the port bottom for gate fixture, instead of a groove, eliminates any potential clogging

       when valve shutoff.

2.    Gate

a)    Beveled knife edge provides strong cutting stress and tight sealing.

b)    PTFE resilient point guider above the port prevents metal-metal contact between gate and body.

c)    Gate thickness can be increased to meet higher pressure.

3.    Seat

a)    Side-entry seat is replaceable, reducing the cost of maintenance.

b)    Preloaded seat is adjustable to meet different sealing class and compensate normal seat wear.

4.    Other

a)   Double thrust bearing minimize the torque required for operation

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