Introduction:

The HAPZ-series Pneumatic Bonneted Stainless Bonneted Knife Valve is a unidirectional knife gate valve with bonnet. The completely enclosed 

body-bonnet structure ensures 0 leakage from the knife gate to surrounding. This valve is very suitable to contaminated/hazardous

media for the safety of surrounding.

Features:

1.    Body：

a)   Integral body with full bore structurer 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.

c)   Completely enclosed structure ensures 0 leakage from valve to the surrounding, which is perfect for 

      contaminated/hazardous media for the safety of surrounding.

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 surface is well polished at both sides for tight seal and less jamming. 

d)    Gate is hard chrome coated for better abrasion resistance.

3.    Seat：

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

b)    Seat retainer covers the side of seat and prevents seat from direct flow flushing.

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

4.    Other：

a)   Double thrust bearing minimizes the operating torque.