current location: Home   >> Product   >> Pneumatic valve >> Pneumatic butterfly valve

Pneumatic soft seal flange butterfly valve


The product description

Pneumatic soft seal flange butterfly valve

USES and features

Soft seal butterfly valve is suitable for food, medicine, chemical industry, petroleum, electric power, light textile, papermaking and other water supply and drainage, gas pipeline for regulating the flow rate and blocking medium on the temperature ≤120℃, nominal pressure ≤ 1.6mpa. Its main features are:

1. Novel design, reasonable, unique structure, light weight, quick opening and closing.

2, small operating torque, easy to operate, labor saving dexterity.

3, can be installed at any location, easy maintenance.

4, the sealing parts can be replaced, the sealing performance is reliable to achieve zero leakage of two-way sealing.

5, sealing material aging, corrosion resistance, long service life and other characteristics.

With a standard

Design standard: GB/ t2238-1989

Flange connection size :GB/ t9113.1-2000; GB/T9115.1-2000; JB78

Structure length :GB/ t12221-1989

Pressure test :GB/ t13927-1992; JB/T9092-1999

Main technical parameters

Nominal diameterDN(mm)50~2000
Nominal PressurePN(MPa)
Test pressurestrength test0.91.52.4
Seal test0.661.11.76
Air Seal Test0.60.60.6
ApplicableAir, water, sewage, steam, gas, oil, etc.
Drive typeManual, worm and wheel drive, gas drive, electric drive.

Material for main parts

Part NameMaterials
valve bodyQ345B, ductile steel, cast steel, alloy steel, stainless steel
Butterfly PlateGray cast iron, ductile steel, cast steel, stainless steel and special materials
Ball seatAll kinds of rubber, ptfe
valve rod2Cr13, stainless steel
StuffingO-ring, flexible graphite O

Butterfly valve sealing material selection and applicable temperature

description of materialsNeopreneBuna-N rubberEPDMPTFEVMQFKM
codeX or JXA or JAXB or JBXC、JC or FXD or JDXE or JE
Maximum temperature tolerance82℃93℃150℃232℃250℃204℃
Minimum temperature tolerance-40℃-40℃-40℃-268℃-70℃-23℃
Applicable operating temperature≤65℃≤80℃≤120℃≤200℃≤200℃≤180℃


D41X-6Z.Q.C.P.RSerial connection dimensions
DNThe length of the structure

Overall dimensions

(reference value)

Connection size (standard value)Reference Weight(kg)