Electromagnetic Valve – Precise Water Flow Control, Enhancing Irrigation Efficiency

Our electromagnetic valve is a hydraulically operated diaphragm-type valve, which controls the flow of water by opening or closing the valve through electrical signals. The electromagnetic valve has precise pressure regulation and responsive action, typically installed on branch or main pipes. It can be remotely controlled, in conjunction with sensors and timers, to achieve precise irrigation and reduce manual intervention.

Electromagnetic valves are widely used in computer-controlled irrigation systems, pressure reducing stations, systems with significant water pressure variations, energy-saving irrigation systems, pipelines that are distant or at higher elevations, pipelines with significant irrigation drop, and water distribution networks.

Features

Long service life. Plastic valve meets industrial-grade design standards, highly durable, resistant to chemical corrosion and cavitation, with no internal bolts or nuts.
Durable diaphragm and valve core. Integrated flexible diaphragm and pilot valve core, the valve requires low pressure to open and drive, effectively preventing diaphragm corrosion and deformation.
Automated control. The electromagnetic valve can be connected to controllers and sensors to achieve automatic irrigation control, suitable for large-scale, multi-zone precision management.
Quick response. The electromagnetic valve can quickly respond to electrical signals in a short time, completing the opening and closing actions to ensure the efficiency of the irrigation system.
Good sealing performance. Since irrigation systems are usually in high humidity environments, the sealing design of the electromagnetic valve can effectively prevent water leakage and improve the reliability of the system.

Working Principle

The electromagnetic valve mainly consists of a valve body (corrosion-resistant shell to protect components from erosion), a solenoid coil (receives electrical signals to control the opening and closing of the valve, can be manually opened or closed), a diaphragm (flexible diaphragm moves under pressure), and a spring (pushes the diaphragm to move).

Energized state: When the electromagnetic valve receives an electrical signal, the electromagnetic coil generates a electromagnetic force, pushing the valve core to move, and the electromagnetic head opens. System pressure [1] passes through the opened electromagnetic head [3] and enters the control chamber [2], where the water pressure presses the diaphragm valve core assembly [4] down, closing the water flow channel.

De-energized state: When the electromagnetic valve is de-energized, the electromagnetic coil stops working, the electromagnetic head closes, the pressure in the control chamber [2] decreases, and the spring resets the diaphragm valve core assembly [4], opening the water flow channel.

Diagram of the working principle of an electromagnetic valve

Head Loss

Specifications

Dimensional diagrams of two electromagnetic valves

Table 1: Pressure Compensating Dripper Specifications
Color	Flow Rate L/h	Pressure kg	Weight g	Material
Yellow	2	0.5–3.5	3.6	PP
Black	4	0.5–3.5	3.6	PP
Blue	8	0.5–3.5	3.6	PP

Table 2: Electromagnetic Valve Technical Parameters
Model	Specifications	Connection Method	Solenoid Voltage (V)	Maximum Flow Rate (m³/h)	Operating Pressure (bar)	Weight (kg)
SV-1	1.5" x 1.5"	BSP / NPT	DC24V / AC24V / DC12V (pulse)	15	0.35–10	1.56
SV-2	2" x 2"	BSP / NPT / VIC	DC24V / AC24V / DC12V (pulse)	25	0.35–10	1.96
SV-3	3" x 3"	BSP / NPT / Flange / VIC	DC24V / AC24V / DC12V (pulse)	50	0.35–10	2.04 (with flange 3.42)
SV-4	4" x 4"	Flange	DC24V / AC24V / DC12V (pulse)	100	0.35–10	6
SV-5	6" x 6"	Flange	DC24V / AC24V / DC12V (pulse)	150	0.35–10	11.8