A valve joint used with hydrofluorocarbon propellants is treated chemically or physically to reduce its coefficient of friction and hence reduce valve blockage and extraction of the valve material

摘要

A valve joint which distributes hydrofluorocarbon (HFC) propellants of the type HFC-134a and HFC-227 is treated to reduce its coefficient of friction and hence reduce valve blockages and extractables Process for the fabrication of a fluid distribution valve joint where the fluid is propellant of the type HFC-134a or HFC-227, with or without alcohol, where the joint surface is treated to reduce the coefficient of friction and thus reduce blockages and/or to reduce the amount of material extractable from the joint. An Independent claim is included for the treated valve joint.