Butterfly Type Buffering Non-return Valve(H47) suppliers

Butterfly Type Buffering Non-return Valve(H47)

Butterfly Type Buffering Non-return Valve(H47)

The valve is closed by the reversing flow medium and the weight and there is a damper on the valve. The valve is closed by two stages of quick and slow closing which prevents the pump from turning back and superhigh water hammer pressure. The weight on the shaft balance the force during opening to reduce the flow resistance.

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Butterfly Type Buffering Non-return Valve(H47) Details

 

Suitable
material:
water、sea water
Main
material:

grey cast iron, ductile cast 
iron,alloy cast iron,carbon steel

Suitable temprature:

≤80℃

Nominal 
pressure:
PN2.5-25MPa
Nominal 
dimension:

DN250-280mm

Flange
dimension:
BS4504 IS02531,IS07005 
and other standards conforming to the 
requirements
Face tp Face length : BS5153,IS05752,DIN3352
and other standards conforming to the 
requirements


MATERIALS OF MAIN PARTS

Name of parts
Material of parts
Body,cover,disc
Cast iron/duetile iron/carbon steel
Shaft
Stainless steel
Body sealing ring
Stainless steel
Disc sealing ring
Gunmetal/bronze/brass/rubber


The valve is closed by the reversing flow medium and the weight and there is a damper on the valve. The valve is closed by two stages of quick and slow closing which prevents the pump from turning back and superhigh water hammer pressure. The weight on the shaft balance the force during opening to reduce the flow resistance.

 

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