Description Specifications Description ASCO solenoid pilot operated valves available in normally closed and normally open constructions. These slow closing solenoid valves are available either AC or DC operated with brass bodies. 8221 series valves are designed to effectively reduce damage caused by water hammer.Features:Snubber slows disc closing speed to protect system against water hammer damage more effectively than other techniquesPressure spike due to water hammer is reduced to a point eliminating the need for suppressors or other controls in most water systems State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Pipe Size:3/4 inOrifice Size:3/4 inOperating Pressure Rating:Min: 5 psiMax: 150 psi Literature & Docs Accessories