The soft seal gate valve in front of the table utilizes the deformation compensation effect generated by the overall sealing of the gate plate to achieve good sealing effect, overcoming the problems of poor sealing, water leakage and rust of general gate valves. The bottom adopts the same flat bottom valve seat design as the water pipe, which does not produce debris accumulation, has a small flow resistance coefficient, and a smooth channel. The front soft sealed gate valve body is coated with epoxy resin both inside and outside to prevent corrosion and rust. It can be used not only for domestic water but also in sewage treatment systems.

Front soft seal gate valves are widely used as regulating and throttling devices in fluid pipelines such as tap water, sewage, construction, petrochemicals, food, medicine, textiles, electricity, ships, metallurgical energy systems, etc.

The soft sealed gate valve in front of the table is composed of a wet valve electromagnet, valve core, transmission plunger, valve sleeve, top needle rod, steel ball, steel ball seat, reset spring, etc. The valve core and valve body are connected by threads. One end of the transmission plunger is connected to the electromagnetic armature, and the other end is pressed against the steel ball. Therefore, both the thrust of the upper electromagnet and the force of the lower spring create a linkage between the two steel balls and the top needle rod. There are annular control chambers between the two ends of the top needle rod and the valve core, which are respectively connected to the radial holes on the valve core.

When the electromagnet is powered off, the pressure oil entering from the P chamber directly acts on the ball seat of the pilot valve, and the elastic force of the reset spring also acts on the ball seat in the same direction, causing the lower valve port of the pilot valve to close and the upper valve port to open, thus blocking the pressure oil circuit from the control oil circuit A and opening the control oil circuit from the return oil circuit T. In this case, the control oil circuit is in an unloaded state; When the electromagnet is powered on, the transmission plunger pushes the upper steel ball downward, causing the upper valve port to close and the lower valve port to open. Therefore, the passage between the control oil circuit and the return oil circuit is blocked, and at the same time, the pressure oil circuit and the control oil circuit are opened. The pressure oil enters the inclined hole of the valve body through the control chamber of the pilot valve to keep the control oil circuit in working condition.