Double Flanged Butterfly Valve

Specification parameters Name Double Flange Butterfly Valve Size 2" ~ 48" (DN50~DN1200) Pressure 150LB ~ 300LB (PN10~PN40) Temperature -20°C~+425°C Drive Mode Electric, pneumatic, hydraulic, turbine, etc. Applicable media Water, steam, oil, acid and alkali, seawater, etc. Part materials valve body WCB, CF8, CF8M Valve plate WCB, CF8, CF8M Axis 304, 316, 1Cr13

Size Range

2" ~ 48" (DN50~DN1200)

Temperature Range

-20°C~+425°C

Pressure Rating

150LB ~ 300LB (PN10~PN40)

Operation Type

Electric, pneumatic, hydraulic, turbine, etc.

Specification parameters

Name	Double Flange Butterfly Valve
Size	2" ~ 48" (DN50~DN1200)
Pressure	150LB ~ 300LB (PN10~PN40)
Temperature	-20°C~+425°C
Drive Mode	Electric, pneumatic, hydraulic, turbine, etc.
Applicable media	Water, steam, oil, acid and alkali, seawater, etc.

Part materials

valve body	WCB, CF8, CF8M
Valve plate	WCB, CF8, CF8M
Axis	304, 316, 1Cr13
Sealing ring	316,304
filler	Flexible graphite, fluoroplastic

Design Specification

Design Standards	API609-83
Structure length	ASME B16.10, GB/T 12221
Flange connection size	ANSI B 16.5
Torsion welding standard	ASME B16.25, GB/T 12234
Fire Protection Requirements	API 6FA, API 607
Pressure test	API 598,GB/T 13927, GB/T 26480
Temperature and Pressure Test	ASME B16.34, GB/T 12224

Product Description

Double Flanged butterfly valve is simple in structure, small in size and light in weight. It consists of only a few parts. Moreover, it can be quickly opened and closed by rotating 90°, and the operation is simple, and the valve has good fluid control characteristics. The butterfly valve's disc is mounted in the diameter direction of the pipe. In the cylindrical passage of the butterfly valve body, the disc-shaped disc rotates around the axis, and the rotation angle is between 0° and 90°. When the rotation is 90°, the valve is fully open. When the flange butterfly valve is in the fully open position, the thickness of the disc is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics.

flanged butterfly valve main features:

1, easy to open and close, labor-saving, small fluid resistance, can be operated frequently.

2. Simple structure, small size and light weight.

3. Mud can be transported and the liquid is accumulated at the mouth of the pipe.

4. Under low pressure, a good seal can be achieved.

5, the adjustment performance is good.

Installation tips:

1. When installing, the disc should stop at the closed position.

2, the opening position should be determined according to the rotation angle of the disc.

3. Butterfly valve with bypass valve. Open the bypass valve before opening.

4, should be installed according to the manufacturer's installation instructions, the weight of the butterfly valve should be set a solid foundation.

Butterfly Valves