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API6d Turbine Double Flanged Butterfly Valve

Product Description

Driving Mode: Manual Structure: Centre Sealing Valve Stem: Normal Working Temperature: Normal Temperature (-40°CO-Ring Sealing: PTFE,NBR,Rptfe Trademark: FYV Origin: Wenzhou, Zhejiang Connection Form: Flange Seal Form: Force Sealed Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa) Material of Seal Surface: Metal Hard Sealed Application: Industrial Usage Class: 150-1500lb Operation: Gearbox Specification: CE, SGS HS Code: 8481804090 Product Name: Double flange Butterfly Valve
Product Model: D4((7)2(3/4/5)F(X/H/W/Y)
Product Class: Class 150-300
Product Size: 2"-48"
Operated Type: Gear box

Double flange butterfly valve standard compliance:

Design&manufacture: API 609

Face to face dimension: ANSI B 16.10

Flange dimension: ANSI B16.5a

Testing: API 598

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a Ball Valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.
A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.
DN(mm) 50~2000
PN(MPa) 0.6 1.0 1.6
Test pressure
Strength test 0.9 1.5 2.4
Seal test 0.66 1.1 1.76
Applicable medium Water,Oil,Sea-water
Applicable temperature ≤80ºC

API6d Turbine Double Flanged Butterfly ValveAPI6d Turbine Double Flanged Butterfly Valve

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