MR - Automatic Recirculation Valve

The SCHROEDAHL High-pressure Automatic Recirculation Valve of MR series is used for the pump protection of high-pressure water centrifugal pumps.

SCHROEDAHL is the largest supplier of Automatic Recirculation Valves in the world. These ARVs, or pump protection systems, are our principal products.

Our ARV is a high quality automatic solution to protect centrifugal
pumps against overheating, instability and cavitation, during zero process flow and low load conditions. If the flow through the system is or falls below a certain level, the bypass system opens automatically and the fluid is recirculated, providing the required minimum flow for the pump.

Special operation requirements, low load cases, complicated commissioning situations and the pressure in the bypass line have an impact on the valve design and therefore are typically part of customers RFQ information - SCHROEDAHL can offer solutions at a very high level.

• Nominal diameters: DN 80 to DN300 (3" to 12")
• Pressure classes: PN63 to PN640 (Class 300 to 4500)
• Materials: Carbon Steel, Stainless Steel, Duplex Steel
• Features: Automatic and modulating bypass operation