Feature: This valve is automatic electric solenoid valve with Voltage AC220V,AC110V,DC24V and DC12V. It can automatic control or remote control work medium such as steam, water, oil pipe on and off, the valve series has a wide application, using a variety of medium, wide range of working pressure, long life, etc.2W、UW、SLDF series is direct acting diaphragm structure. It can operate under zero head pressure, the magnetic head is strong enough to lift the diaphragm by the force of the magnetic field on the lifting armature even at full working pressure and thus to open the valve. Hence they are used where little or no fluid pressure is available such as vacuum service or low pressure applications. The working pressure is up to 1.0Mpa, medium temperature is less than 80℃.