Pressure reducing valves are a valuable asset to any piping system. Many people are under the misapprehension that more pressure is better when, in fact, it is often the reverse.

Too much pressure in a system puts unnecessary strain on water heaters, plumbing joints, taps, washers, etc, increasing the chance of leaks, burst hoses on washing machines and other appliances and adding greatly to water hammer problems.

The Caleffi 5335 series pressure reducing valve is fully adjustable between 100 – 600kPa and allows for easy adjustment to an optimum pressure. A pressure gauge can be fitted into the gauge port for accurate setting. The valve comes factory set at 500kPa, the most common pressure setting required for domestic systems. The Caleffi 5335/H is available in both standard and high temperature versions. Alternatively, the Caleffi 535 series “dial-up” pressure reducing valve range is available from 15mm to 50mm.