德國Zimmer-automation是一家專業生產繼電器、漏水檢測器、液位控制器的生產廠家。產品被廣泛用于廢水處理工程，高壓滅菌器，建設，灌溉系統，釀造設備，消防設備，電影照片開發設備，裝瓶廠和機，洗碗機，咖啡機，空調，保全系統，冷卻系統，食品加工，醫療設備，乳品設備，雨水收集系統，發動機和渦輪機，清潔技術，X射線設備，屠宰設備，游泳池，洗碗機，紡織染整機械，動物澆水，環境工程，污水處理廠。
Pilot-Operated Solenoid Valves Description
pilot-operated
Internal pilot-operated (servo) valves normally have a pilot and bleed orifice, which enables them to use line pressure for operation. When the solenoid is deenergised, the pilot orifice is closed and full line pressure is applied to the top of the piston or diaphragm through the bleed orifice, providing the seating force for tight closure.
This operation method requires a certain difference in the pressure across the valve ports.
AL 03
2/2 way solenoid valve with diaphragm
? No energised port P closed by spring return (NC).
? G 3/8" - G 2", DIN ISO 228
? Flow medium:Neutral, gaseous and liquid media
AL 07 / 08
2/2 way solenoid valve with piston
? No energised port P closed by spring return (NC).
? G 3/8" - G 3/4", DIN ISO 228
? Flow medium:Neutral, gaseous and liquid media
i 145
2/2 way solenoid valve with diaphragm
? For high temperature
? No energised port P closed by spring return (NC).
? G 3/8" - G 1", DIN ISO 228
? Flow medium:Hot water, steam and other media
28
2/2 way solenoid valve
? Flange-connection
? DN 15 - 50
? No energised port P closed by spring return (NC).
? Flow medium:Neutral, gaseous and liquid media
AN 03
2/2 way solenoid valve with diaphragm
? No energised port P opened by spring return (NO).
? G 3/8" - G 2", DIN ISO 228
? Flow medium:Neutral, gaseous and liquid media
160
2/2 ways plastic solenoid valve
? No energised port P closed by spring return (NC).
? d20 - d 63, G 1/2 - 2", DIN EN 175301-803
? Flow medium:Aggressive fluids and gases
