A78W-25

🌎 Brand: 上海凯西姆阀门有限公司
Anti-Static

Specifications

Valve Type ID d7d67555-64ef-4b43-9620-2a3788065572
Size Range DN400-DN2000
Pressure Rating PN150.0-PN900.0
Temperature Range 20°C to 800°C
Body Material plastic
Trim Material stainless steel
Seal Material metal seal
Stem Material stainless steel
End Connection clamp
Standard BS
Operation Method gear
Flow Coefficient (Cv) 947.77
Leak Rate micro leakage
Applicable Media water
Applications water
Industry Tags nuclear power
Test Pressure 76
Design Pressure 900
Design Standard BS
Design Temperature 800
Body Material Grade CF8
Weight (kg) 1599
Specifications compiled from manufacturer technical datasheets.

Engineer's Selection Guide: Control Valves

Control valves modulate flow in response to a control signal to maintain a process variable. Selection involves sizing for the required Cv, choosing the trim and body style, defining the flow characteristic, and specifying the actuator and positioner. Leakage class per FCI 70-2 should be specified for the duty.

Frequently Asked Questions

Q: What is a control valve used for?

A: Control valves regulate process flow, pressure, level, or temperature by modulating the flow path in response to a controller signal.

Q: How are control valve leakage classes defined?

A: Leakage is typically classified per FCI 70-2 / IEC 60534-4, ranging from Class I (no test) to Class VI (tight shutoff, bubble-tight for soft seats).

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

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