... 2.Steady quality 3.Competitive price 4.Good quality seals Pressure Relief valve Details: 1. Material: WCC,WCB, 8620 2. Processes: ... , turning molding machine, and hanging shot blast cabinet 6. Testing equipment: Direct-reading spectrometer hi-temperature metallographic microscope chemical analysis ... used in water pump as a part of presure reducing valve. 10. Material for this part is WCC and WCB. 11 ...