| 摘要 |
A solenoid operated liquid spray device which includes a flow control module disposed within the solenoid coil of the device for controlling the direction of pressurized through the spray device. The flow control module includes separate inlet and outlet portions which can be easily disassembled for on line service without necessity for disconnecting fluid supply and electric power lines. The outlet portion is secured to the inlet portion by an adjustable retainer which is selectively positionable for adjusting the operating stroke of the valve plunger without the necessity for damaging relative rotational movement between the valve plunger needle and valve seat. The module portions further define a first flow passageway communicating between a liquid inlet and discharge nozzle and a second or return passageway communicating with a heated liquid supply for enabling liquid in the spray device to be maintained at an optimum heated temperature when a spraying operation is interrupted.
|
