A79H-25

🌎 Brand: 中国方圆阀门集团
Fire Safe Anti-Static

Specifications

Valve Type ID 71253804-28cc-4806-9583-a09d9c90e0d4
Size Range DN40-DN160
Pressure Rating PN1.0-PN3.0
Temperature Range -40°C to 600°C
Body Material alloy steel
Trim Material Hastelloy
Seal Material graphite
Stem Material alloy steel
End Connection threaded
Standard JB
Operation Method pneumatic
Flow Coefficient (Cv) 1634.01
Leak Rate ANSI Class IV
Applicable Media slurry
Applications slurry
Industry Tags power generation
Test Pressure 76
Design Pressure 3
Design Standard JB
Design Temperature 600
Body Material Grade LCC
Weight (kg) 1573
Specifications compiled from manufacturer technical datasheets.

Engineer's Selection Guide: Butterfly Valves

Butterfly valves are quarter-turn valves valued for compact, lightweight construction and economy at large diameters. Selection considers disc/liner material compatibility, seating type (concentric, double-offset, triple-offset), pressure class, and face-to-face standard. They suit moderate-pressure on/off and some throttling duties.

Frequently Asked Questions

Q: What is a butterfly valve used for?

A: Butterfly valves are used for on/off isolation and moderate throttling, especially in large-diameter water, HVAC, and process lines where weight and cost matter.

Q: Which standards govern butterfly valves?

A: Common references include API 609, ISO 5752, MSS SP-67, and AWWA C504 for water service.

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

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