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High pressure protect. Auto open and close. Fast response to over pressure situation.
Spec:
Port Size: DN15-DN80
Working Presure: PN1.0-PN32
Working Temp: -20~200C
Material: see below material vs model/parts table:
| NO. | Parts | A27H material | A27W-P material | A27W-R material |
| 1 | Valve body | HT350 | Cast steel 321 | Cast steel 316 |
| 2 | Valve seat | 35 | Cast steel 321 | Cast steel 321 |
| 3 | Adjust ring | 420 | 321 | 316 |
| 4 | valve clack | 420 | 321 | 316 |
| 5 | Spring | 50CrVA | 50CrVA Coated Teflon | 50CrVA Coated Teflon |
| 6 | stem | 420 | 420 | 321 |
| 7 | Adjust screw | 45 | 420 | 321 |
| 8 | cover | ZG200-400 | ZG200-400 | 321 |
| 9 | Seal material | Surfacing D507 | Surfacing Co alloy | |
Stainless steel safety valve DN15-DN80