Laminar Pte Ltd Singapore

Laminar Pte Ltd


Solenoid Control Valves

Group 1 1
Group 1 1


Solenoid control valves have become indispensable components in a variety of applications, providing a reliable and efficient method of controlling the flow of liquids or gases in a wide range of systems. These valves are crucial in water treatment plants, HVAC, heating, and cooling applications for semiconductor fabs, food processing, and manufacturing operations.

A typical solenoid control valve consists of two main parts: a coil assembly and a control element. The solenoid coil assembly generates a magnetic field when an electric current passes through it, actuating the control element to open or close the valve based on its original position – allowing the solenoid valve to either permit inlet pressure into the main valve operating chamber or discharge pressure from the chamber.

One notable variant is the 3-way solenoid valve, which an electric current or signal can activate. When the solenoid valve is energised, the main valve opens, and when it is de-energised, the main valve closes.

The standard valve is usually supplied in the “normally closed (NC)” position, but the “normally open” position can also be an option.

The utilisation of solenoid control valves brings about several advantages:

  • Precise control over the flow rate is achieved while ensuring safe operations by reducing the risk of human error.
  • Compared to manual operations, system performance, heightened safety, and enhanced efficiency improved.
  • Reliable and able to withstand a broad range of temperatures and pressure differences.
  • They are designed to be easily integrated with existing systems, allowing for a quick and hassle-free installation without significant disruptions to ongoing operations.
  • Present a cost-effective solution when compared to alternative flow control methods. It makes them an ideal choice for applications where precision control is crucial while simultaneously keeping a tight check on budgets.

As technology advances, solenoid control valves are expected to expand further, offering greater efficiency and applicability across increasingly diverse industries.



10, 16, 25


40 to 600


Water | Effluent water


Transmission pipeline | Distribution network | Pumping stations | Treatment plants | High-rise buildings | Pressure management | Level control


  • Solenoid Pilot Valve – 3 way – 120 VAC / 60 Hz standard, other voltages available
  • With flange ends on both sides according to EN 1092-2
  • Separate connection of control circuit and pressure gauges
  • Designed to reduce cavitation by using a slotted cylinder
  • Body and bonnet of Ductile Iron
  • Diaphragm of EPDM or NBR
  • Control circuit and solenoid valve body of stainless steel or brass
  • It can be modified to be electrically controlled or pneumatically operated


Solenoid valves are electromechanical devices that use an electric current to control the flow of fluids or gases. They consist of a coil, plunger, and valve body. When the solenoid coil is energised, it generates a magnetic field that attracts the plunger, resulting in either an open or closed position. Solenoid valves offer fast response times and can be operated remotely through electrical signals. Solenoid valves, however, are limited in size, and the larger size available in the market can be 2 inches or DN50.

On the other hand, control valves are mechanical devices that regulate fluid flow by adjusting their position based on input signals from a controller. They typically consist of a valve body, actuator or pilot valve; in some applications, it includes a positioner. Control valves provide precise control over flow rates by modulating their opening sizes using diaphragms or pistons. Its design allows more accurate regulation of a system’s pressure, temperature, or level. There are also almost no limitations on the valve sizes, and there is always a control valve design regardless of how big the pipeline can be, unlike solenoid valves.

In terms of operation, solenoid valves require continuous electrical power to remain open or closed. Once the power is cut off or interrupted, they return to their default position (normally open or closed). Control valves operate based on feedback received from sensors that monitor process conditions such as temperature or pressure differences. The controller adjusts the valve’s position accordingly to maintain the desired setpoint.

A solenoid is a device that converts electrical energy into mechanical force. It consists of a coil of wire, usually wrapped around an iron core, which creates an electromagnetic field when energised. This field can induce a current in the surrounding conductor, moving such as linear or rotational motion.

In solenoid control valves, the electromagnetic field generated by the coil causes the plunger to move, triggering either an open or closed position.

Solenoids provide fast response times and are used for many industrial applications, such as controlling the flow of fluids or gases. They are also used in various consumer products, including door locks, car starters, agricultural and toys.

Yes, solenoid valves can be used to control pressure. They are designed to regulate the flow of liquids or gases by modulating their opening size in response to input signals from a controller.

Solenoid control valves allow for accurate and precise regulation of pressure within a system and other parameters such as temperature or level. Solenoid valves offer superior performance to manual systems, with fast response times and reliable operation.

Furthermore, they come in various sizes and designs to suit different industrial applications, making them a cost-effective upgrade option. Additionally, they are easy to install and integrate with existing systems.

The two main types of solenoid valves are direct-acting and pilot-operated valves.

Direct-acting solenoid valves feature an inlet port, outlet port, and internal flow paths that allow quick response times when switching between open and closed positions. They’re designed to be operated by remote control through electrical signals. They are suitable for applications requiring quick flow control, such as large systems with high-pressure levels.

On the other hand, pilot-operated valves use a separate actuator to move the valve’s plunger. They allow more precise control over pressure and flow rate, making them ideal for applications requiring slow or precise valve opening and closing. Additionally, they are capable of supporting higher pressures than direct-acting valves.

Another type of solenoid control valve is the 3-way solenoid valve, typically used to control multiple inlet flows. It consists of three ports: an inlet port (IN), an outlet port (OUT), and an exhaust port (EX). When the solenoid coil is energised, fluid flows from the inlet port to the outlet port while the exhaust port is open to relieve pressure.

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