Description Specifications Literature Description ASCO heavy duty pilot operated diaphragm and piston valves are available in normally closed and normally open constructions. The 8220 series valves offer high flow capacity, long life and are available AC or DC operated. The rugged stainless steel piston is ideal for the challenge of high temperature fluids.Features:Hot water service to 210 psi differential @ 210°F; steam service to 125 psi differential @ 353°FSpecify these valves for the high-temperature applications found in laundries, molding, steam atomization, sterilizers, autoclaves, and many otherPilot operated diaphragm and piston valves; floated PTFE diaphragms or stainless steel pistons with EPDM or PTFE discs State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Pipe Size:1 1/4 inOrifice Size:1 1/8 inOperating Pressure Rating:Min: 5 psiMax: 149 psi Literature & Docs Product Specifications Accessories