High pressure decompressors from cylinders or ramps have inlet pressures up to 220 bar for standard versions and higher for special versions. Cylinder inlet connections conforming to UNI standards, other types of connections are available upon request. Outlet pressure control is delegated to a stainless steel diaphragm (AISI 316L) for up to 15 bar, and to a piston for higher outlet pressures. The execution of the external chrome-plated surface and stainless steel diaphragm makes the R133 Series suitable for the following applied laboratory and analytical systems, as well as normal industrial applications. EAC-EX TP TC012/2011 version for the Russian market. The product complies with the 2014/68/EU PED Directive.