... 2.Powder metallurgy part for valve 3.High density 4.Steam treatment Product NameSinter Part for Multi-way ValveRaw MaterialsCu: 1% - 3 ... , Oil pump, Crescent gear pump, Double gear pump, Plunger pump, Multi-way valveProcessingMixing powder——Forming——Sintering——Sizing——Machining——Oil impregnant——Checking ...