J78H-150

🌎 Brand: 上海冠龙阀门机械有限公司
Fire Safe

Specifications

Valve Type ID d7d67555-64ef-4b43-9620-2a3788065572
Size Range DN80-DN800
Pressure Rating PN100.0-PN400.0
Temperature Range 20°C to 100°C
Body Material plastic
Trim Material Monel alloy
Seal Material metal seal
Stem Material titanium alloy
End Connection welded
Standard API
Operation Method manual
Flow Coefficient (Cv) 1140.98
Leak Rate zero leakage
Applicable Media corrosive media
Applications corrosive media
Industry Tags metallurgy
Test Pressure 122
Design Pressure 400
Design Standard API
Design Temperature 100
Body Material Grade WCB
Weight (kg) 163
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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