應用范圍：
它廣泛應用在航天、船舶重工、石油化工、工業爐窯、鍋爐、給排水、采暖空調、消防設備、干燥設備、食品醫療設備、清洗設備、景觀噴灌、水廠等管道系統中。p>

產品特點：
先導式結構，閥芯均為不銹鋼活塞，活塞環不會被介質中的雜質卡死，動密封性能高,壽命長；活塞與金屬閥腔不產生直接摩擦，閥體安裝方向無限制；專制線圈，不易燒毀；長時間停止動作重新啟動，動作同樣靈敏；泄漏量零；使用壽命長達100萬次以上。

主要技術參數：

工作原理：
常閉：當線圈通電時，先導閥芯吸合，先導孔打開，閥上腔卸壓，活塞靠下腔介質壓力推動，電磁閥打開；當線圈斷電時，先導閥芯靠彈簧復位，先導孔關閉，閥上腔由活塞節流孔增壓和復位彈簧的推力，電磁閥關閉。
常開：當線圈通電時，先導孔關閉，閥上腔由活塞節流孔增壓和復位彈簧的推力，電磁閥關閉。當線圈斷電時，先導閥芯靠彈簧復位，先導孔打開，閥上腔卸壓，活塞靠下腔介質壓力推動，電磁閥打開。

規格尺寸：

注：出口端壓力大于進口端壓力，介質會反向導通?？砂惭b止回閥或訂制自帶止回功能的閥。

Applications: 
It is widely used in aerospace, shipbuilding Heavy Industry, petrochemical, industrial furnaces, boilers, plumbing, heating and air conditioning, fire fighting equipment, drying equipment, food and medical equipment, cleaning equipment, landscape irrigation, water and other piping systems. p> p>

Features:
Pilot structure, the spool is stainless steel piston, piston rings will not be stuck impurities in the medium, dynamic sealing performance and long life; piston valve chamber with the metal does not produce direct friction, the valve mounting direction unlimited; authoritarian coil and difficult to burn; long restart action to stop the action as sensitive; leakage is zero; life of up to 100 million times.

Main technical parameters:

How it works:
NC: When the coil is energized, the pilot spool pull the pilot hole to open, pressure relief valve on the chamber, the piston on the lower chamber medium pressure to promote, the electromagnetic valve is opened; When the coil power, the pilot valve by the spring return, pilot hole closed, the valve chamber and pressurized by the piston return spring throttle thrust, the electromagnetic valve is closed.
Normally Open: When the coil is energized, the pilot hole closed, the valve chamber and pressurized by the piston return spring throttle thrust, the electromagnetic valve is closed. When the coil power, the pilot valve by the spring return, pilot hole open, pressure relief valve on the chamber, the piston on the lower chamber medium pressure to promote the solenoid valve open.

Size:

Note: The outlet pressure is greater than the inlet pressure, the media will pass anti-wizard. Can be installed or custom built non-return valve function of the valve.