Knife Gate Valves

 

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The 'Atval' range of knife gate valves has been developed to compliment its range of pinch valves. In many instances, they are supplied together to the same processing plants and customers.

The design is extremely simple and includes a one-piece body, flat knife edged blade and field replaceable seats to facilitate ease of maintenance. The valve gets its name from the blade or gate, which has a 'knife-like' cutting edge. The gate, which moves perpendicular to the direction of flow, provides a guillotine action, which enables it to shear through semi liquid media such as pulp, paper, sewage, slurry, fibrous and viscous materials.
 
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Fig 145 Knife Gate Valve Fig 245 Knife Gate Valve    
       
Fig 145 Fig 245    
       
 
     
In addition to the services shown (under the pinch valve section) knife gate valves are suitable for additional services such as:    
     
Petroleum and Chemical Plants (gas, steam trace, corrosive, powders, pellets, oils and acids) Steel Works (gas, dirty water, water treatment)
Pulp and Paper Plants (stock control, plant water, chlorine, bleach and pollution abatement systems) Water works (water, sludge, water treatment and Sewage)
    Shipping (ballast, cargo, fuel and dredging)
   
     
Essentially three ranges of knife gate valves are offered which have been designed and developed for the following applications:    
     
On / Off Control Throttling Control Metering control
   
     
The product range is from 50mm to 1500mm with a maximum design pressure of 10 Bar. Sizes up to 300mm are available in 16Bar design, which are subject to special order. The temperature range is -20º to +330º centigrade.    
     
     

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