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Zhejiang Guanlong Machinery Valve Co., Ltd.

Water Turbine Valve, Pump Valve, Automatic Check Valve manufacturer / supplier in China, offering Counterweight Type Non Return Butterfly Valve (HD743H), 2/3 Way Solenoid Valve DC24V/AC220V, Globe Double Chamber Adjustable Pressure Regulating Pressure Reducing Valve (Yx741X) and so on.

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Supplier Homepage Product Check valve / Non-return valve Others Check valve / Non-return valve Counterweight Type Non Return Butterfly Valve (HD743H)

Counterweight Type Non Return Butterfly Valve (HD743H)

FOB Price: US $500-10,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $500-10,000/ Piece
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Port: Ningbo, China
Transport Package: Bubble Plastic Paper + Plywood Case
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: HD743H
  • Connection Form: Flange / Weld
  • Seal Form: Force Sealed
  • Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)
  • Material of Seal Surface: Metal Hard Sealed
  • Application: Industrial Usage, Water Industrial Usage
  • Trademark: KARFAR / OEM
  • Origin: China
  • Driving Mode: PLC / Counterweight / Hydraulic Control Station
  • Structure: Single/Double/ Triple off Set Sealing
  • Valve Stem: Normal
  • Working Temperature: Normal Temperature (-40°C<T<120°C)
  • Valve Body: Casting
  • Medium Applicable: Water, Sea Water, Sewage, Oil etc
  • Specification: DN150~DN3500
Product Description
ΔHydraulic station Control Slow Shut Non return Butterfly Valve
Model HD743H


Open time: 10 ~ 120 seconds (adjustable)
Quick shut time: 1.5 ~ 30 seconds (adjustable) 
Slow shut time: 6~120 seconds (adjustable)
Quick shut angle adgree: 70°±10°
Slow shut angle adgree: 20°±10°
Resistance coefficient at full open positioin:0.1
Electricity voltage: AC220V,DC220V,DC110V,DC24V etc.


Hydraulic station Control Slow Shut Non return Butterfly Valve is mainly installed at inlet pipe of water turbine; or installed at outlet side of all kinds of pumps, replacing check valve and gate valve. This valve will cooperate with main device in the pipeline, through hydraulic station, electric actuator PLC setting, to achieve reliable cut-off function and eliminate water hammer. It can automatically close when power goes off so to protect the pipeline system.
This couterweight type model is automatically cut off by gravitational potential energy of the couterweight hammer. It is applied with PLC control system. It can also assemble with munual locking and automatic locking device. 

Δ Automatic operation
Δ Small Resistance
Δ Multiple functions in one
Δ Reliable performanc


We also have accumulator type as bellow:
Counterweight Type Non Return Butterfly Valve (HD743H)

Counterweight Type Non Return Butterfly Valve (HD743H)
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