The WHLEY 181 SR Solenoid Valve is a highly reliable, spring-return valve assembly engineered for demanding industrial fluid and gas control applications. Designed with a robust spring-loaded mechanism, this unit provides dependable fail-safe operation by automatically returning to its default position when de-energized. Featuring a precise 90-degree quarter-turn configuration and a maximum operating pressure rating of 200 PSI, the 181 SR ensures optimal performance, strict safety compliance, and long-lasting durability in your automated systems. Caution: Proper handling is required during maintenance due to the spring-loaded assembly.