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Betterfly Valve

1.Novel design, reasonable, unique structure, light weight, easy to operate, fast opening and closing
2.In addition to regulating and intercepting the flow, the telescopic butterfly valve can compensate the thermal expansion and cold contraction caused by the temperature difference of the pipeline. It can also provide convenience for the installation, replacement and maintenance of the valve
3.The sealing parts can be adjusted and replaced, and the sealing performance is reliable

  • China
  • About 30days after down payment
  • Information

SD343H worm gear flange expansion butterfly valve

SD343H worm gear flange expansion butterfly valve


Main Technical specifications

nominal diameter

DN(mm)

50~2000

nominal pressure

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

Gas seal test

0.6

0.6

0.6

applicable temperature

≤80℃


applicable medium



Air, water, steam, gas, oil, etc

driving form

manual operationover-type worm gear

  • reversible electric drive、electric drive


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