Lb Series Economical Direct Acting Compressed Air Dryer Solenoid Valve Price

working principle

The solenoid valve consists of two parts: the solenoid coil and the valve body. Its main working principle is to use the electromagnetic force generated by the solenoid coil to push the valve core to move and achieve fluid switching or direction change. Specifically, the solenoid valve has a sealed chamber with through holes at different positions, each connected to a different oil pipe. The middle of the chamber is a piston, and there are two electromagnets on both sides. When the magnet coil on which side is energized, the valve body will be attracted to which side. By controlling the movement of the valve body to open or close different oil discharge holes (the inlet hole is normally open), hydraulic oil will enter different oil discharge pipes, and then push the piston of the oil cylinder through the pressure of the oil. The piston drives the piston rod, which in turn drives the mechanical device. In this way, the mechanical motion is controlled by controlling the current on and off of the electromagnet.

Principle classification
Direct acting solenoid valve: When powered on, the solenoid coil generates electromagnetic force to lift the closing member from the valve seat and open the valve; When the power is cut off, the electromagnetic force disappears, and the spring presses the closing member against the valve seat, causing the valve to close. This type of valve can work normally under vacuum, negative pressure, and zero pressure, but the diameter generally does not exceed 25mm.
Stepwise direct acting solenoid valve: This is a principle that combines direct acting and pilot operated. When there is no pressure difference between the inlet and outlet, after being energized, the electromagnetic force directly lifts the pilot small valve and the main valve closing member upward in sequence, and the valve opens. When the inlet and outlet reach the starting pressure difference, after being energized, the electromagnetic force pilot small valve, the lower chamber pressure of the main valve rises, and the upper chamber pressure drops, thereby using the pressure difference to push the main valve upwards; When the power is cut off, the pilot valve uses spring force or medium pressure to push the closing member downwards, causing the valve to close. This type of valve can also operate under zero pressure difference, vacuum, and high pressure, but it has a high power and must be installed horizontally.
Pilot operated solenoid valve: When powered on, the electromagnetic force opens the pilot hole, causing the pressure in the upper chamber to rapidly decrease, creating a high and low pressure difference around the closing member. The fluid pressure pushes the closing member upward, and the valve opens; When the power is cut off, the spring force closes the pilot hole, and the inlet pressure quickly forms a lower and higher pressure difference around the closing valve through the bypass hole. The fluid pressure pushes the closing valve to move downward and close the valve. The upper limit of the fluid pressure range of this valve is relatively high, and it can be installed arbitrarily (customized), but it must meet the condition of fluid pressure difference.

Fluid parameters

Material: For corrosive fluids, corrosion-resistant solenoid valves and all stainless steel are recommended; Food grade stainless steel solenoid valves are recommended for consuming ultra clean fluids.
Temperature: For high-temperature fluids, electromagnetic valves made of heat-resistant electrical and sealing materials should be selected, and piston type structures should be chosen.
State: The fluid state can be gaseous, liquid, or mixed, especially when the diameter is greater than DN25, it must be distinguished.
Viscosity: Usually below 50cSt, it can be freely selected. If it exceeds this value, a high viscosity solenoid valve should be used.

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Changsha Lingbo Environmental Protection Technology Co., Ltd. is a high-tech enterprise focusing on water treatment accessories. Its main products include RO membranes, ultrafiltration membranes, filter cloths, filter bags, filter elements, water tanks, dosing pumps, metering pumps, and pharmaceuticals, which are widely used in new energy, microelectronics, petrochemicals, medical, pharmaceutical, food and beverage, water treatment, and automobile manufacturing. We are able to provide RO systems and various water treatment products for residential, commercial, and industrial components. We not only focus on the quality and performance of our products, but we continue to research and innovate to provide more efficient, energy-saving, and environmentally friendly products and solutions for global customers.

The application scenarios of solenoid valves are very wide, including but not limited to:

1.Water solenoid valve: suitable for water or other water like media, commonly used in water supply and drainage, fire protection, agricultural irrigation, industrial circulation cooling and other systems.
2.Steam solenoid valve: suitable for steam or other high-temperature media, commonly used in boiler, heating, drying, disinfection and other systems.
3.Refrigeration solenoid valve: suitable for refrigerants or other low-temperature media, commonly used in air conditioning, cold storage, refrigeration and other systems.
4.Gas solenoid valve: suitable for natural gas, liquefied gas or other combustible gases, commonly used in gas stoves, water heaters, gas boilers and other systems.
5.Fire solenoid valve: suitable for media in fire water or other emergency situations, commonly used in automatic sprinkler, fire hydrant and other systems.
6.Ammonia solenoid valve: suitable for ammonia or other toxic and harmful gases, commonly used in chemical, pharmaceutical, refrigeration and other systems.
7.Liquid solenoid valve: suitable for oil, acid-base or other chemical liquids, commonly used in hydraulic equipment, chemical equipment and other systems.
8.Micro solenoid valve: suitable for media with low flow or pressure, commonly used in medical equipment, laboratory equipment and other systems.
9.Pulse electromagnetic valve: suitable for media controlled by pulse signals, commonly used in dust removal equipment, spraying equipment and other systems.
10.Hydraulic solenoid valve: suitable for hydraulic oil or other high-pressure liquids, commonly used in hydraulic machinery, engineering machinery and other systems.
11.Explosion proof solenoid valve: suitable for media in explosive environments, commonly used in systems such as oil fields, mines, and chemical industries.

In summary, as an important industrial equipment, solenoid valves play a crucial role in industrial automation control systems. The correct selection, installation, and use of solenoid valves are of great significance for ensuring the smooth progress of industrial production.

The installation method of solenoid valve is as follows:

Q:Can you supply the OEM services?

A:No problem.

Q:Are you able to develop customized solutions for non-standard applications?

A:Yes, we can. We have a professional R&D team.

Q:Do you have technical drawings or data sheets of your instruments?

A:Yes, we can supply upon customer's request, please contact with the sales.

Q:What about the MOQ?

A:The minimum order amount is $1000USD. Small order can be negotiation.

Q:How about the delivery time? 

A:The delivery time is 7-45days depends on the products type and quantity.

Q:Do you check the products before shipment?

A:Our products all are 100% inspection before shipment.

Q:What is the warranty policy?

A: 1Year warranty.