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CALEFFI 533550 ¾" 20mm 3-Way Pressure Reducing Valve 100-500kPa Adjustable, Made in Italy

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    Click here to be notified by email when CALEFFI 533550 ¾" 20mm 3-Way Pressure Reducing Valve 100-500kPa Adjustable, Made in Italy becomes available.


    The Caleffi 533550 20mm 3/4" 3-way pressure reducing valve is made in Italy and Australia Watermark approved. The Caleffi 533550 pressure reducing valve features a pressure adjustment range of 100-500kPa with a factory setting at 500kPa. Caleffi is the one of only a rare few manufacturers in Australia offering a pressure reducing valve that can adjust to a pressure setting  as low as 100kPa, which is required for specialized applications. 
    The Caleffi 533550 3-way pressure reducing valve features 2 outlets and one removable plug. This design is extremely flexible, allowing the unit to be used as either a standard inline or a right angle pressure reducing valve depending on plug location. In factory default, the unit is set up as an inline pressure reducing valve by blocking the middle bottom outlet.
    The 3-way pressure reducing valves are commonly installed in residential plumbing works where a right angle is present in the pipe. Such locations include after water meters or just before entering houses. The pressure reducing valves can ensure a stable water supply pressure supply, despite the fluctuations in the mains water supply pressure from the streets.
    The pressure reducing valves can serve as a more reliable and versatile alternatives to more traditional pressure limiting valves, when used in hot water services such as electric, heat pump, gas storage and solar hot water heaters. The pressure reducing valve employs a membrane design inside with a stiff pre-loaded adjustable spring, opposed to a sliding piston mechanism found in a pressure limiting valve which often causes failures from clogging up.
    In real world installations, it is sometimes found that pressure limiting valves cannot limit pressures sufficiently in places where unusually high street mains pressures are present. This can cause troubles with ECV and PTR valves leaking on hot water services. The pressure reducing valves can be used in such situations and offer a far better pressure control from our in field experiences over the years in our own plumbing jobs in Brisbane.
    Please note, by offering the 3-way flexibility, this pressure reducing valve foregoes any inbuilt test plugs for pressure gauge installments. If you need a simple plain right angle pressure reducing valve with a test plug, AW brand offerings can be found in All Plumbing Online store with this feature. 

    Technical Details

    • Manufacturer: CALEFFI, Made in Italy
    • Australia Watermark Approved
    • Model: 533550
    • Specifications:
      • Flow Rate: 30L/min@100kPa; 120L/min@500kPa
      • Maximum Working Temperature: 40°C
      • Maximum Upstream (Inlet) Pressure: 1600kPa
      • Downstream (Outlet) Setting Pressure Range: 100 kPa - 500 kPa 
      • Factory Pressure Setting: 500kPa
      • Extractable and serviceable cartridge with stainless steel filter mesh
    • Thread Size: 3/4" BSP (20mm) Female Thread (20FI x 20FI)
    • Physical Thread Measurement: 26.441mm, refer to the BSP vs Physical Thread Measurement Table in the photo gallery
    • Material: DR Brass Body
    • Intended Use: Hot water heaters and street mains water inlet into residential dwellings. 
    • SKU: PRVCAL20-3WAY


    Package Contents

    - Caleffi 533550 20mm 3/4" 3-way pressure reducing valve
    - Package Weight 550g


    All listed items are in stock. Dispatch next business day. Local pick up is available.

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