DIFF Subgroup
F16K 27/0272 Full Title
Construction of housing (methods for welding housings B23K); Use of materials therefor > of lift valves (for reducing the flow resistance of screw-spindle lift-valves F16K1/06)
F16K 27/0272 Construction of housing (methods for welding housings B23K); Use of materials therefor > of lift valves (for reducing the flow resistance of screw-spindle lift-valves F16K1/06)