Vatac Automatic Recirculation Valve is a kind of
pump protection device. It automatic protect centrifugal pump when pump body
occur cavitations 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 reducing valve.
Vatac Pump Protection Valve is suitable for bypass with high
pressure differential, maximum pressure differential is 30MPa, and specific
choice is determined by factory. Multistage decompression type M type bypass
can eliminate noise made by high-speed flow medium; prevent damage of cavitations
erosion and braising to valve components.
Vatac Pump Control Valve is equipped with below
Main Performance advantages:
» Automatic recirculation control valve
including recycling stream decompression facilities, high-pressure medium
through the flow around several small diameter, a lot of energy, and reduce
» Pump protection valves
have only very low flow recirculation, cooling pump, then pump during normal
operation, there is no recycling, saving for a continuous recycling of the
consumption of electricity and water.
» Automatic recirculation
control valve does not require electrical wiring; do not need two valves in
series, one for the adjustment, the other for cutting. And the high-pressure
systems are prone to cable and high speed flow to minimize erosion.
» With reasonable design,
stable running, no noise, long life, etc., can completely replace the imported
» Simple structure, low cost, long life, suitable for low pressure working condition.0
» Easy for installation, can be installed vertically or horizontally on pump outlet.
» Applicable Medium: water, oil, methanol and other liquid medium.
» Working temperature: -196°C~+300°C
protection valves (automatic recirculation valve) are with main features as
» Nominal Diameter: 1”~12”
» Engineering Pressure: CL150~900
» Bypass Size: 1/2" DN (standard); or special
» Recommended Flow Rate: 4 to 6 m / s up to 8 m
» Ends Connections: Flanged (ANSI or DIN)
» Main Body Materials: cast steel, forged carbon
steel, beryllium cast chrome-nickel-molybdenum stainless steel,
chrome-nickel-molybdenum-beryllium steel forging
» Trim Material: chrome steel, forged
chrome-nickel-chromium-molybdenum stainless steel