Counterweight Type Non Return Butterfly Valve (HD743H)

• Model NO.: HD743H
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Metal Hard Sealed
• Valve Body: Casting
• Application: Industrial Usage, Water Industrial Usage
• Medium Applicable: Water, Sea Water, Sewage, Oil etc
• Transport Package: Bubble Plastic Paper + Plywood Case
• Specification: DN150~DN3500
• Trademark: KARFAR / OEM
• Origin: China

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: