Keystone Butterfly Valves, Series GRW/GRL (ISO)
Manual & Guides: Series GR resilient seated butterfly valves GRW
Install the valve according to the procedure in the left column KEYSTONE SERIES GR RESILIENT SEATED BUTTERFLY VALVES GRW/GRL INSTALLATION AND OPERATION MANUAL |
Keystone series gr resilient seated butterfly valves
Wafer and lugged body design with face-to-face dimension according to EN 558 Series 20 and API 609 • Designed according to EN 593 and API 609 |
Keystone Series GRW/GRL Butterfly Valves
Wafer and lugged body design with face-to-face dimension according to EN 558 Series 20 and API 609 • Designed according to EN 593 and API 609 |
Keystone Series GRW/GRL Wafer and Lug Resilient Seated
ISO API MSS-SP etc • Lug and wafer style body resilient seated butterfly valve • Concentric disc with a fully elastomer lined body |
How to choose a butterfly valve?
How to choose a butterfly valve?
1Fluid Type must be known.
2) The velocity of the fluid must be known.
3) The temperature of the fluid must be known.
4) The Operating Pressure of the fluid must be known.
5) The diameter of the Butterfly Valve must be known.
6) The Connection Flange must be known.
7) The outdoor temperature must be known.
How do I identify a butterfly valve?
The butterfly valve is normally designed as a "through-bolting" body, either a wafer or lug (single- flange) design.
These body styles do not actually have true flanges on the ends, and they both depend on bolting to pipe flanges on each end.
What is an API 609 butterfly valve?
API 609 is the American design standard forbutterfly valves, which is divided into Category A and B.
Category A valves are "concentric" type.
Also known as rubber lined butterfly valves.
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