Solenoid Valve PARKER

General Description : – Parker 7321B/7322B are diaphragm pilot operated solenoid valves and require a minimum differential pressure to operate. – This series is available in both Normally Closed and Normally Open function: 7321B Serie is a Normally Closed family (closed when de-energised), 7322B Serie is the Normally Open family (Open when de- energized). Material Specifications : – Valve body : CW617N UNI EN 12165:98 Forged Brass – Enclosing tube : AISI 304 stainless steel – Plunger : AISI 430F St. Steel – Spring : AISI 302 St. Steel – Seals : NBR (Buna N) – EPDM – FKM (Viton) – Shading ring: Copper Media : – These valves have been developed to achieve the best performances for water, steam, light oils (up to 2°E). – Therefore these valves are not usable with gas and air. – We recommend to choose NBR versions for plumbing mkt (max. temp. 90°C), FKM version for water/light oils control applications up to 140°C, EPDM version for superheated water and steam (up to 140°C)  

โซลินอยด์วาล์วกับสถานะปกติเปิด(NO)และสถานะปกติปิด(NC)