Q77Y-150

🌎 Brand: 北京首高高压阀门厂

Specifications

Valve Type ID a55c40dc-86ff-43bc-8652-e8146cf91d12
Size Range DN400-DN2400
Pressure Rating PN2.5-PN5.0
Temperature Range -100°C to 400°C
Body Material stainless steel
Trim Material PTFE
Seal Material EPDM
Stem Material carbon steel
End Connection threaded
Standard ANSI
Operation Method manual
Flow Coefficient (Cv) 1385.35
Leak Rate micro leakage
Applicable Media oil products
Applications oil products
Industry Tags marine
Test Pressure 235
Design Pressure 5
Design Standard ANSI
Design Temperature 400
Body Material Grade CF8M
Weight (kg) 1202
Specifications compiled from manufacturer technical datasheets.

Engineer's Selection Guide: Pressure Relief Valves

Pressure relief valves protect equipment from overpressure. Selection requires the required relieving capacity, set pressure, backpressure conditions, and the governing code (e.g., ASME VIII for boilers/pressure vessels). Spring-loaded and pilot-operated designs suit different backpressure profiles.

Frequently Asked Questions

Q: What is a pressure relief valve used for?

A: A pressure relief valve automatically discharges fluid when pressure exceeds a set limit, protecting pressurized equipment from overpressure.

Q: Which standards govern pressure relief valves?

A: Spring-loaded relief valves commonly follow API 526 (dimensions) and API 527 (seat tightness), with sizing per API 520 and ASME Section VIII.

Guidance reflects general engineering practice for pressure relief valves; confirm against the project specification and applicable standards before procurement.

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