The selection of butterfly valve mainly refers to the valve body material, valve plate material, valve seat material, valve diameter and other parameters.
| Body material | Disc material | Seat material | Body style | Flange accommodation | Size | Operator type |
| Cast iron Ductile iron Stainless steel WCB |
ASTM A536 65-45-12 Nylon coated, CF8 CF8M 2507 1.4462 |
EPDM NBR FRM PTFE |
Wafer Lug Flange |
EN 1092 PN 6/PN10/PN16 ASME Class 150 AS 4087 PN10/ PN16 JIS 5K/10K |
DN50-DN2000 2”-80” |
Hand lever, gear box, pneumatic actuator, electric actuator |
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