... quality 3.Competitive price 4.Good quality seals Pressure Relief valve Details: 1. Material: WCC,WCB, 8620 2. Processes: Sand casting ... , standing machine Tool, machine tools, universal miller, standing drill machine, bench drill machine, dry sand mix miller, CNC machining center Etc ... used in water pump as a part of presure reducing valve. 10. Material for this part is WCC and WCB. 11 ...