ZDL Series Automatic Recycle Valve (ARC valve) is a kind of pump
protection device. It automatic protect centrifugal pump when pump
body occur cavitation damage or unstable (especially conveying hot
water at low load operation medium). Once pump flow is lower than
the preseted flow, bypass can completely open to ensure the minimum
required flow pump. Even running fully closed, namely running flow
is zero, the minimum flow can also pass bypass for Automatic
Recycle. Pressure reduced through the multistage bypass pressure
ZDL series Automatic Recycle Valve is suitable for bypass with
medium or low pressure differential, maximum pressure differential
is 6MPa, and specific choice is determined by factory.
Unique L bypass can eliminated noise by made high-speed flow
medium, and prevent cavitation.
- Multi-cage type bypass, low noise, suitable for medium and low
pressure working conditions.
- Forged valve body, can choose carbon steel or stainless steel
- Standard bypass non-return function, maximum working pressure
differential is 6MPa.
- With venturi port main flow non-return structure, adapt to
- Pressure grade from PN16 to PN100, diameter from DN2to DN500.
- Can select manual bypass operation function, used in fault.
SIZE AND PRESSURE RANGE
- Body type: Three-way forged body.
- Nominal diameter: DN25, 32, 40, 50, 65, 80,100, 200, 250, 300, 350,
400, 450, 500.
- Nominal pressure: PN 16, 25, 40, 64, 100 CLASS 150, 300, 600 LB.
- End connection: Flange, FF, RF, RTJ, BW,SW etc.