... valveTechnology: CastingConnection type: ThreadedSize: From 1/4" to 4"Working pressure: 1000 PSI WOGSuitable medium: Water, oil, steam, nitric, acid, acetate ... .4, 3.8, 6.0, 9.6 Seat testing pressure(low pressure) 0.6 Seat testing pressure(high pressure) 1.8, 2.8, 4.4, 7 ...