Professional China Air Release Valve - 2502 Lug Butterfly Valve – Convista
Professional China Air Release Valve - 2502 Lug Butterfly Valve – Convista Detail:
Meet or exceed the requirements of EN593, AS4795.1 and MSS SP-67.
Replaceable liner for DN300 and below sizes, Vulcanized liner for DN350 and above size.
2 shafts for DN300 and below sizes and 1 shaft for DN350 and above size.
Mounting flange in accordance with ISO 5211 or MSS SP-102.
Connection flanged ends: PN10/16, Class 125 and Table D/E.
WRAS approved.
SS304 / 316 stainless steel shaft.
GX5CrNiMo19-11-2 (1.4408) disc for #2502.
Gear operator or handle operated.
Built-in temper switch of gear operator.
| Part | Material | EN Specification | ASTM Specification |
| Body | Cast Iron | EN1561, EN-GJL-250 | A126 Class B |
| Shaft | Stainless Steel | EN10088, X20Cr13 | A276, Grade 420 |
| Disc | Stainless Steel | EN10213, GX5CrNi19-10 | EN10213, GX5CrNi19-10 |
| Bronze | EN1982, CC491K | B62 C83600 | |
| Ductile Iron | EN1563, EN-GJS-450-10 | A536 65-45-12 | |
| Liner | Rubber | EN681, EPDM or NBR | D2000 |
| Bushing | Plastic | Commercial, PTFE | Commercial, PTFE |
| Shaft Sealing | O-Ring | EN681, BUNA-N | D2000 NBR |
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