Inflatable seat pneumatic butterfly valve

Body:     ASTM A536 65-45-12, WCB, CF8M
Disc:      ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
Seat:      EPDM,NBR,FRM.PTFE
Body style:    wafer
Nominal diameter:    2″ – 80″ (DN50mm – DN2000mm)
Top flange:    ISO5211

Description

NO.Part nameMaterial
1BodyASTM A536 65-45-12, WCB, CF8M
2DiscASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
3SeatEPDM,NBR,FRM.PTFE
4StemSS420,SS431
5Lower StemSS420,SS431
6RetalnerNylon for DN50-DN300, SS304 for DN350-DN2000
7BearingRPTFE with Graphite on I.D.
8Weather sealNBR
9NutsStainless steel
10PlugSteel galvanized for DN50-DN300, Cover plate for
DN350-DN2000 material same as body with SS304 bolts
11ScrewSS304

The butterfly valve is closed and the seat is not sealed



The butterfly valve is closed and the seat is sealed



The butterfly valve is open and the valve seat is not sealed


 

Inflatable butterfly valve
Inflatable butterfly valve