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 name Material
1 Body ASTM A536 65-45-12, WCB, CF8M
2 Disc ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
3 Seat EPDM,NBR,FRM.PTFE
4 Stem SS420,SS431
5 Lower Stem SS420,SS431
6 Retalner Nylon for DN50-DN300, SS304 for DN350-DN2000
7 Bearing RPTFE with Graphite on I.D.
8 Weather seal NBR
9 Nuts Stainless steel
10 Plug Steel galvanized for DN50-DN300, Cover plate for
DN350-DN2000 material same as body with SS304 bolts
11 Screw SS304

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