Keystone Butterfly Valves, Series GRF (ISO)
Keystone Series GRF Butterfly Valves IOM
KEYSTONE SERIES GRF RESILIENT SEATED BUTTERFLY VALVES INSTALLATION AND The Keystone Series GRF butterfly valves are designed to require a minimum |
Keystone series grf resilient seated butterfly valves Emerson
Double flanged body design with face-to-face dimensions according to EN 558 Series 20 API 609 and AWWA C504 short • Designed according to EN 593 and API |
Keystone SerieS GrF reSilient Seated ButterFly ValVeS
double flanged body design with face-to-face dimensions according to en 558 Series 20 aPi 609 and aWWa C504 short • designed according to en 593 and aPi |
What is a GRF valve?
KEYSTONE SERIES GRF RESILIENT SEATED BUTTERFLY VALVES.
A heavy duty double flanged concentric design resilient seated butterfly valve.
FEATURES. • Double flanged body design with face-to-face dimensions, according to EN 558 Series 20, API 609 and AWWA C504 short.What are the classification of butterfly valves?
According to working pressure:
(.
1) Vacuum butterfly valve. (.
2) Low pressure butterfly valve. (.
3) Medium pressure butterfly valve. (.
.
4) High pressure 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 API 609 standard?
This standard covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for gray iron, ductile iron, bronze, steel, nickel-based alloy, or special alloy butterfly valves.
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