2W Series 1-1/4'' 2W350-35 UW-35 Brass Solenoid Valve

Technical Data of 2W & 2S Solenoid Valve:

Main dimension of 2W & 2S Series Solenoid Valves:

The main difference between direct acting and pilot solenoids is that direct-acting solenoid valves have a direct connection with the opening and closing armature, whereas pilot-operated valves employ the use of the process fluid to assist in piloting the operation of the valve. Both types of solenoid valve have their particular merits.

Direct acting solenoids adhere to simple working principles. They do not use a diaphragm – their seal is part of the moving core – and they will remain closed even when no pressure is being applied. This is in contrast to a pilot operated valve, which requires some pressure for the valve to stay closed. The main components of a direct-acting 2-way plunger valve, such as the Type 6013, are a coil, a closing spring, a valve body cover and the valve body with the seat.

Pilot solenoid valves use the differential pressure of the medium over the valve ports to open and close. Also known as servo-assisted solenoids, these valves provide high flow rates and can operate at higher pressure and temperature ranges, with lower power consumption. A servo-assisted, diaphragm solenoid valve with pilot control employs the use of a small chamber directly above the diaphragm to assist in the operation of the valve. Process fluid is allowed to enter the chamber through a small orifice in the inlet port, and in a normally closed valve, compresses against the diaphragm and forces is against the seat to maintain the closing seal.

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