Automatic Recirculation Valves

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  1. Schroedahl Type BPV Back Pressure Regulator

    Product Features

    • Prevents evaporation and cavitation and ensures smooth operation
    • Forged housing material, carbon steel or stainless steel
    • Special material possible
    • Internal operation (no external energy source required)
    • Easy to install
    • Low maintenance

    Application

    • Maintaining the pressure in the fl ow recirculation or return line to the tank

    Nominal Diameter:  DN 25-300 / NPS 1-12

    Pressure Class:  PN 16-400 / Class 150-2500

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  2. Schroedahl Type TDL Pump Protection Valves

    Product Features

    • Automatically modulating bypass function
    • Carbon steel or stainless steel
    • Special materials possible (e.g. Super Duplex)
    • Internal operation (no external energy source required)
    • Easy to install
    • Low maintenance
    • Suitable for all liquids

    Applications

    • Boiler feed water
    • Condensate
    • Chemical processes
    • Extinguishing water
    • Snow canons

    Nominal Diameter:  DN 25-500 / NPS 1-20

    Pressure Class:  PN 10-160 / Class 150-900

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  3. Schroedahl Type MRK Pump Protection Valves

    Product Features

    • Automatically modulating bypass function
    • Forged housing material, carbon steel or stainless steel
    • Special materials possible (e.g. Super Duplex)
    • Internal operation (no external energy source required)
    • Easy to install
    • Low maintenance
    • Suitable for all liquids

    Applications

    • Boiler feed water
    • Condensate
    • Pumps in fossil fuel plants
    • Chemical processes
    • Offshore applications (seawater injection)

    Nominal Diameter:  DN 80-300 / NPS 3-12

    Pressure Class:  PN 250-640 / Class 1500-4500

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  4. Schroedahl Type SUL Pump Protection Valve

    Product Features

    • Automatically modulating bypass function
    • Cast material, carbon steel, stainless steel
    • Single-stage pressure reduction (up to 20 bar)
    • Internal operation (no external energy source required)
    • Easy to install
    • Low maintenance
    • Suitable for all liquids

    Applications

    • Boiler feed water
    • Condensate
    • Chemical processes
    • Extinguishing water

    Nominal Diameter:  DN 25-250 / NPS 1-10

    Pressure Class:  PN 10-63 / Class 150-300

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  5. Schroedahl Type TDM Pump Protection Valves

    Product Features

    • Automatically modulating bypass function
    • Forged housing material, carbon steel or stainless steel
    • Special materials possible (e.g. Super Duplex)
    • Internal operation (no external energy source required)
    • Easy to install
    • Low maintenance
    • Suitable for all liquids

    Applications

    • Boiler feed water
    • Condensate
    • Chemical processes
    • Extinguishing water
    • Snow canons

    Nominal Diameter:  DN 25-300 / NPS 1-12

    Pressure Class:  PN 63-400 / Class 150-2500

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