EHSCV150BB Dixon Valve EHSC Spring Check Valve - 1-1/2" Weld Connection - FKM Gasket - 316L Stainless SteelFeatures: Machined from solid bar Standard O ring (FKM) and gasket seal design Can be serviced in field (no special tools required) Finish: sanitary polish 32 Ra Temperature Range: 15 F to 200 F Part Number Size Cracking Pressure Max. Operating Pressure EHSCV050BB 1 2" 10. 0 PSI 145 PSI EHSCV075BB 3 4" 4. 0 PSI 145 PSI EHSCV100BB 1" 2. 5 PSI 145 PSI EHSCV150BB 1 1 2" 1. 0 PSI 145 PSI EHSCV200BB 2" 1. 5 PSI 145 PSI EHSCV250BB 2 1 2" 0. 8 PSI 145 PSI