Soft seal butterfly valve and hard seal butterfly valve.


Soft seal butterfly valve and hard seal butterfly valve.

What is soft seal butterfly valve ?

Wafer Soft Seal Butterfly Valve uses the flexibility of rubber seat, could easily achieve zero leakage, therefore is a widely applied valve in oilfield, agriculture, water &waste water and mining industries. Its rubber lined body materials, it is usually used in low pressure lines. 

Wafer type is the common style of butterfly valve and is less expensive than the lug type. The wafer butterfly valve is installed between two flanges. The valve is kept in place by using bolts or studs and nuts from flange to flange. This type of installation, of course, makes it impossible to disconnect just one side of the piping system from the valve.

 

What is metal seal butterfly valve ?

 

Metal seal butterfly valves are made of metal and can meet the technical requirements of some corrosive materials. Metal seals have a long service life, but their sealing performance is relatively poorer than that of soft seals.


Hits:    【Print