The 536 series pressure reducing valve is a high performance valve made specifically for applications where high inlet pressures are present and where extraneous noise and maintenance activities are to be avoided. The internal layout, designed to obtain the optimum fluid dynamic characteristics, has made it possible to achieve a low noise level in all the tests carried out and thanks to this quality, Caleffi reducing valves are approved to the acoustic group I, in compliance with the EN 1567 European standard. The zone exposed to the upstream pressure is constructed in such a way that it can operate at high pressure.
Thanks to the PTFE anti-extrusion rings on the compensating piston, the valve can be used in continuous service with upstream pressures of up to 2,500kPa. For ease of inspection and maintenance, a removable internal cartridge and strainer, containing all the regulating components, can be accessed through the top of the valve