Product Introduction

This product is designed and manufactured by the engineering and technical personnel of our unit with reference to advanced similar products at home and abroad. The valve body adopts a streamlined design, featuring small fluid resistance, large flow rate and excellent sealing performance. Equipped with a pipe control system with a solenoid valve as the pilot valve on the main valve, it uses hydraulic operation and is often used for automatic control in water supply, drainage and industrial systems. It is a valve that can be remotely controlled to open and close, and a speed control device can be added if needed. It can replace large electric devices for opening and closing gate valves and butterfly valves, with the advantages of small size, light weight, simple maintenance, convenient use, safety and reliability. Welcome to purchase!

600X Piston-type Hydraulic Electric Control Valve Product Drawing

Working Principle

When the water pump starts operating, the water flow at the inlet end of the valve passes through the micro filter, needle valve 14, pressure control chamber, electromagnetic pilot valve 8, ball valve 6 in sequence, and is discharged to the outlet. At this time, the electromagnetic pilot valve is energized (the solenoid valve works synchronously with the water pump motor) and remains in a normally open state. Due to the small opening of needle valve 14 and the smaller diameter of the inlet pipe compared to the outlet pipe, the discharge speed in the control chamber is greater than the water replenishment speed. As a result, the pressure in the control chamber decreases, and the inlet pressure acting under the main valve disc lifts the main valve disc, thereby opening the main valve to supply water downstream.

When water supply needs to be stopped, the water pump motor shuts down, and the electromagnetic pilot valve 14 closes due to power failure (normally closed state). Since the downstream water starts to flow back and the self-weight of the valve disc causes the throttle port to close quickly by 90%, the remaining 10% uses the pipe to transmit the pressure behind the valve to the upper water chamber. Due to the action of the electromagnetic pilot valve, the pressure in the upper water chamber gradually increases, eventually causing the main valve disc to close tightly. This prevents downstream water from flowing back, protects the water pump motor, and also plays a role in slow closing and noise elimination. (This is the working principle of the diaphragm type, and the piston type works similarly.)