نام محصول:
دریچه بررسی غشای
نام انگلیسی:
Membrane check valve WW-740Q
برند:
BERMAD CS Ltd
مشخصات:
The Model 740Q Booster Pump Control Valve is a double chambered, hydraulically operated, diaphragm actuated active check valve that opens fully or shuts off in response to electric signals. It isolates the pump from the system during pump starting and stopping, to prevent pipeline surges.
Product features & benefits
•Line pressure driven
oIndependent operation
oNo motor required
oLong term drip tight sealing
•Solenoid controlled
oLow cost wiring
oWide ranges of pressures and voltages
oNormally Open or Normally Closed
•Check feature (spring loaded type)
oReplaces line sized check valve
oFail-safe mechanical closure
•In-line serviceable – Easy maintenance
•Double chamber
oFull powered opening (option “B”) and closing
oNon-slam opening and closing characteristic
oProtected diaphragm
•Balanced seal disk – High flow capacity
•Flexible design – Easy addition of hydraulic features”
Typical Applications
In this system, a pump battery supplies the main line through a manifold. The Model 740Q, installed downstream from each pump:
Prevents surge generation rather than minimizing surge damage
Provides surge free starting and stopping of supplementary pumps
Allows surge free switching between “on-duty” pumps
Delays reaction of variable speed primary pump to single speed supplementary pump going on line or off line.
توضیحات:
Type
membrane
Body
flange, manifold
Other characteristics
spring, hydraulic
DN
Max.: 900 mm(35.433 in)Min.: 40 mm(1.575 in)
Pressure
0.7 bar(10.2 psi)
Temperature
Max.: 85 °C(185 °F)Min.: 0 °C(32 °F)
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