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AV, Pump Re-Circulation Valves
AV Model, Pump Auto Re-Circulation Valves (ARV)
Valution's automatic recirculation valve (ARV) is a multifunctional valve that ensures that the pump always has a predetermined minimum flow rate in the water supply and pressurized system using a centrifugal pump.
In this system, it is important because if minimal flow is not guaranteed, the centrifugal pump will cause overheating and cavitation, and if idling, it will be permanently damaged.
In particular, the minimum flow rate designed in a state where the differential pressure is maximized during the initial operation of the centrifugal pump must be preserved, and a fluid velocity control trim was applied to prevent extreme cavitation and damage in the minimum flow rate preservation area.
The automatic flow check valve of the pump automatic recirculation valve is a special type of lift check valve installed downstream of the boiler feed pump and ensures minimum flow under low flow operation.
The automatic recirculation valve incorporates the minimum flow protection function of the centrifugal pump and is a fully self-operated mechanical valve that does not require a separate actuator to save energy and reduce costs.
AV Model, Pump Auto Re-Circulation Valves (ARV)
■ Features & Production Range
1. The ‘AV’ valve is operates in its self actuating which incorporates the centrifugal pump's minimum flow protection.
2. Fully mechanical construction that relies on its own construction, regulating valves, saves energy and reduces costs
3. The main configuration has a check valve function
4. Bypass is a multistage vortex decompression structure that is resistant to cavitation and erosion
5. Leakage rating: ANSI Class V
6. Size & ratings : DN25~DN300, ANSI Class 300~2500LB
7. Body materials : Carbon steel, Stainless steel, Alloy steel
8. End connections : RF or RTJ Flanged