Wafer Type Butterfly Valve

Size Range
2" ~ 48" (DN50~DN1200)
Temperature Range
-20°C~+425°C
Pressure Rating
150LB ~ 300LB (PN10~PN40)
Operation Type
Manual, worm gear, electric, pneumatic, hydraulic
Wafer Type Butterfly Valve

Specification parameters

Name Wafer Type Butterfly Valve
Size 2" ~ 48" (DN50~DN1200)
Pressure 150LB ~ 300LB (PN10~PN40)
Temperature -20°C~+425°C
Drive Mode Manual, worm gear, electric, pneumatic, hydraulic
Applicable media Water, steam, gas, oil, nitric acid, strong oxidizing medium, urea, corrosive medium, etc.

Part materials

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

Design Standards

Design Standards API609-83
Flange connection size ANSI B16.5
Structure length ANSI B 16.10-1992
Pressure test API 598-82
Applicable temperature -40°C~425°C

Product introduction

wafer type butterfly valve is widely used in industrial pipelines such as petroleum, chemical, electric power, steel and metallurgy for cutting or regulating medium flow. The valve is easy to install. The valve is sealed by a three-dimensional eccentric oblique cone seat. The butterfly plate is made of a new metal sheet and an elastic material. It is embedded in the butterfly plate and matched with the valve seat.

The butterfly plate is pressed and pressed tightly, so the frictional resistance of the sealing surface is small, and the function of closing the tighter when closing is closed, so that the sealing property is reliable, and the opening ensures that the sealing surface is completely out of contact, thereby ensuring that the sealing surface is not damaged.

The structure of the api wafer type butterfly valve eliminates the shortcomings of other types of butterfly valves that can not be sealed. The butterfly plate seal adopts new metal sheets and elastic materials, and can be used normally under high temperature, overcoming other types of valves. The disadvantage of easy leakage due to thermal expansion when used at high temperatures. The butterfly valve uses different sealing surface materials according to the requirements of the medium to ensure that the sealing surface is resistant to abrasion, corrosion and long service life.

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