Series SUL -Schroedahl Automatic Recirculation Valve
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Schroedahl Automatic Recirculation Valve
Modern processing industries often require centrifugal pumps to operate with fluctuating flows. When flows are too low in centrifugal pumps, overheating may occur, which can lead to damage or unstable operation. It is important that flows through a pump do not fall below a certain minimum, as determined by the pump manufacturer. The Schroedahl SUL valve is a reliable and economic solution.
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The Schroedahl SUL series offers an effective, low-cost protection for pumps in the power, chemical and petrochemical industries.
It provides automatic bypass at low flow conditions. The bypass opens only when the main flow is throttled to less than the minimum flow.
All Valves Combine 4 Functions in 1
- Flow sensitive: The Schroedahl Automatic Recirculation Valve senses the main flow and positions the disc accordingly.
- Automatic recirculation flow: The Schroedahl Automatic Recirculation Valve bypasses the minimum flow to the suction tank (or to the condenser), preventing overheating of the pump.
- High pressure reduction: The cascade element in the bypass reduces the high pressure of the main flow to a lower pressure in the suction tank; this is combined with a low noise level and minimum wear and tear.
- Non-return function: The Schroedahl Automatic Recirculation Valve also operates as a check valve, preventing reverse flow through the pump.
Features
- Dependable operation – only a few moving parts.
- Easy to install – in a vertical or horizontal position, directly on the pump outlet.
- Easy to change flow characteristics.
- Suitable for a wide range of media, such as water, oils, hydrocarbons, liquid gases and chemicals. Permissible temperatures from -200°C to +200°C.
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| தோற்றம் | DE |
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