Main types and working principles of bidirectional flow hard impact hard rotation ball valves
Release time: 2026-05-22 16:21:35
Main component materials (diaphragm type and piston type):
| name | Regular material | Chromium nickel stainless steel | Seawater resistant material | |
| valve shaft | Stainless steel 2Cr13 | ZG1Cr18Ni9Ti | 316L | |
| Diaphragm | Nitrile rubber/stainless steel | EPDM/2Cr13 | EPDM/316L | |
| Valve body sealing surface | Semi ferritic high chromium steel D507 (H) hard alloy STL (Y) | ZG1Cr18Ni9Ti | ZcuZn38Mn2Pb2 manganese brass | |
| seal | Double sealing | D507 (H)+Nitrile Rubber (X) | 316L+EPDM EPDM EPDM rubber | T+EPDM EPDM EPDM rubber |
| STL (H)+Nitrile Rubber (X) | ||||
| hard seal | STL (Y)+A102 stainless steel welding rod | 316L+316L | T+316L | |
| D507 (H)+A102 stainless steel welding rod | ||||
Main component materials (diaphragm type and piston type):
| name | Regular material | Chromium nickel stainless steel | Seawater resistant material | |
| valve shaft | Stainless steel 2Cr13 | ZG1Cr18Ni9Ti | 316L | |
| Diaphragm | Nitrile rubber/stainless steel | EPDM/2Cr13 | EPDM/316L | |
| Valve body sealing surface | Semi ferritic high chromium steel D507 (H) hard alloy STL (Y) | ZG1Cr18Ni9Ti | ZcuZn38Mn2Pb2 manganese brass | |
| seal | Double sealing | D507 (H)+Nitrile Rubber (X) | 316L+EPDM EPDM EPDM rubber | T+EPDM EPDM EPDM rubber |
| STL (H)+Nitrile Rubber (X) | ||||
| hard seal | STL(Y)+A102不锈钢焊条 | 316L+316L | T+316L | |
| D507 (H)+A102 stainless steel welding rod | ||||
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