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Disadvantage of the screw type diaphragm valve

 

Tedious and complicated work for cutting, welding, tapping

 

Require rubber hose to correct error caused by thermal expansion during welding

 

Operational error caused by particle and corrosion due to moisture inside header tanks

 

Pressure loss between valve on air header tanks and blow tube

 

Air leak by welding failure

 

 

 

Disadvantage of the coupling type diaphragm valve

 

Same problem with screw type diaphragm valve

 

Completely make a screw when you install, otherwise unfixed valve can come out and cause the

 

   personal injury

 

 

 

Disadvantage of the flange type diaphragm valve

 

Tedious and complicated work for cutting, welding, tapping

 

Operational error by particle and corrosion due to moisture inside header tanks

 

Air leak by welding failure

 

Costly and time consuming for bolting

 

 

 

Disadvantage of square header tank

 

Using the square type tank is difficult to meet EU and US pressure container safety guideline

 

Operational error by particle and corrosion due to moisture inside header tanks

 

Air leak by welding failure

 

Stress concentration on 4 edges part of square tank can cause crack

 

 

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