CALEFFI 533550H High Performance 20mm 3-Way Pressure Reduction Valve 100-500kPa Adjustable

Overview

The Caleffi 533550H 20mm 3/4" 3-way high performance pressure reduction valve is made in Italy and Australia Watermark approved. The "H" in the model’s name indicates this is a high-performance version of pressure reduction valves in Caleffi ranges with a high temperature rating at 80°C and a high inlet pressure rating at 2000kPa (VS standard Caleffi version at 40°C and 1600kPa respectively). The valve body casting and dimensions are the same between the H and standard Caleffi pressure reduction valves, but the cartridges are different. The comparison photos between the 2 models are shown in the photo gallery for your reference.

The Caleffi 533550H 3-way pressure reduction 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 reduction valve depending on plug location. In factory default, the unit is set up as an inline pressure reduction valve by blocking the middle bottom outlet.

The Caleffi 533550H 3-way pressure reduction valve features a pressure adjustment range of 100-600kPa with a factory setting at 500kPa. Caleffi is one of a rare few manufacturers in Australia offering pressure reduction valves that can adjust to a pressure setting as low as 100kPa, which is required for specialized applications.

The pressure reduction valves are commonly installed in residential plumbing works such as after water meters or just before entering houses. The pressure reduction valves can ensure a stable water supply pressure supply, despite the fluctuations in the mains water supply pressure from the streets. 

The pressure reduction 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 reduction valve employs a membrane design 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 reduction 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 reduction valve foregoes any inbuilt test plugs for pressure gauge instalments. If you need a simple plain right angle pressure reduction 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: 533550H
• Specifications:
• Flow Rate: 30L/min@100kPa; 120L/min@500kPa; 125L/min@600kPa
• Maximum Working Temperature: 80°C
• Maximum Upstream (Inlet) Pressure: 2000kPa
• Downstream (Outlet) Setting Pressure Range: 100 kPa - 600 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 internal diameter, refer to the BSP vs Physical Thread Measurement Table in the photo gallery
• Material: DR Brass Body
• Intended Use: Hot water heaters and special applications in high temperature or pressure situations
• SKU: 533550H

Package Contents

- Caleffi 533550H 20mm 3/4" 3-way pressure reduction valve

- Package Weight 450g (550g with the optional gauge)