Series TDM -Schroedahl Automatic Recirculation Valve

Name: Series TDM -Schroedahl Automatic Recirculation Valve
Brand: SCHROEDAHL

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The SCHROEDAHL Automatic Recirculation Valve Type TDM is used for the pump protection of centrifugal pumps. SCHROEDAHL is the largest supplier of Automatic Recirculation Valves in the world. During the last 50 years, more than 50,000 of these SCHROEDAHL ARVs have been supplied to satisfied customers all over the world.

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The SCHROEDAHL Automatic Recirculation Valve Type TDM consists of the check valve section with bypass configuration.

The movement of the lever is transmitted via a piston to the multi-stage vortex plug.

The minimum flow is then bypassed in a modulating way over several pressure reduction stages.

Applicable for differential pressures from 20 bar to 230 bar. The standard TDM design has a built-in bypass non-return function (~2 bar dp level required).

For the high pressure service and high load range, depending on the existing bypass pressure level, it may be necessary to increase the bypass back pressure to prevent cavitation, especially when the bypass is in modulating action. Therefore, the installation of a special back pressure valve (BPV) is recommended, to ensure that the bypass pressure level is always at a suitable pressure level.

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