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Cast Iron Bidirectional Knife Valve

  • Cast Iron Bidirectional Knife Valve
  • Cast Iron Bidirectional Knife Valve
  • Cast Iron Bidirectional Knife 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...+200℃
   Seal Tightness:

     According to MSS SP-81

   Body Material:

     Cast Iron

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

     EPDM (120°C) /Viton(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 Cast Iron Bidirectional Knife 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)    Non-groove body design eliminates any potential clogging when valve shutoff.

2.    Gate

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

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

3.    Seat

a)    U-shaped elastomer seat provides a peripheral seal along the edge of the gate and ensures tight seal in both 

        flow directions.

4.    Other

a)   Double thrust bearing minimize the torque required for operation

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1Cast Iron Bidirectional Knife ValveDownload
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