ASME B 16.5 Pilot-Operated Safety Valve Manufacturer: A216 WCB, 4 X 6 Inch, Flange Class 300 - 150 LB, Orifice Code L, API 527 Test and Inspection.

The allowable tolerance of the seat pressure: ≤±3% of the set pressure
Overpressure: ≤10% of the set pressure
Blowdown: ≤10% of the set pressure
Leakage: The valve has good seat tightness and the leakage rate conforms to API 527
Design: ASME, API 526, API 520, ASME B 16.5
Orifice Code: L
Material:
Body / Bonnet: ASTM A216 WCB
Valve Disc: 316/PTFE
Guide: 316
Spring: 316
Flange Pressure Grade: Inlet Class 300 LB & Outlet Class 150 LB
Sizes Range: Inlet 4 Inch & Outlet 6 Inch
InletTemperature Range: -29 ? ~ + 260 ?
Test and Inspection: API 527