What are Solenoid Valves?
A solenoid valve is a self-automated valve that is generally used to control the flow of gas or liquid. The solenoid begins by converting a high pressure electrical signal into an automatic movement.
The working of Pilot operated solenoid valve principle is, there should be at least 0.5 bar pressure differential between inlet and outlet to help this valve operate. So fluid will come from inlet and fill the space under the diaphragm. This fluid will move over the diaphragm through the orifice (bleed hole), and it will fill the space over the diaphragm. After that fluid flows up in the tube/plunger.
Working of solenoid operated valve
Let’s have a look on primary operation of valve. A valve is attached to a pipeline which consists of upstream and downstream. Initially the upstream consist of pressure which passes to downstream when the valve is energized. The Valve consists of a circuit, when the circuit is energized the electromagnetic coils get energized and pull the coils up allowing the flow of the fluid from the upstream to downstream. When the circuit is de-energized, the coil closes the flow of liquid/air. This is the basic principle that is used to open and close solenoid operated valves.
All types of solenoid operated valves, no matter the design, are specified to be one of two general types: either a direct acting valve or a pilot operated valve but there can be many more.
Types of Solenoid operated valve:
1. Direct Acting operated Valves
Now we will look at the other type of pilot operated valve called as direct acting solenoid valve. This valves body is made up of a solenoid, which is a coil that produces an electromagnetic field and when electric current passes through it. Inside the body of valve there is an Inlet port and Outlet port, a plunger, a spring and an Orifice.
The media (air/gas) enter through the inlet port and fill the chamber, when current passes through the solenoid the electromagnetic field is produced which lifts the plunger up. The media in the chamber passes through the orifice and leaves through the outlet port.
When the current is stopped, the electromagnetic force is removed and the plunger closes the opening of the orifice. This stops the floe of the media. This is how a direct acting solenoid valve works.
Types of direct acting solenoid valve are:
1) 2-Way Direct Acting Solenoid valve
2) 3-Way Direct Acting Solenoid valve
3) 4- Way Direct Acting Solenoid valve
2. Pilot-Operated Solenoid Valves
In pilot operated valves, the plunger opens the pilot opening and built-up pressure consisting of fluid causes the valve to open and close until coil remains energized.
Diaphragm is the most important part of Pilot operated Valve. It is located inside valve and is responsible for continuous flow of air from one end to another. Diaphragms are used in variety of valves such as Pulse Jet Valves, Solenoid valves, Pilot operated valves, Pneumatic Valves. They are made application-specific by manufacturing in various materials like special Imported polyester(less expensive), neoprene and Viton ( for high temperature).Because of these high grade materials used for designing diaphragm it reduces cost and are corrosion resistant.
3. Two-Way Solenoid Valves
The most common type valve is the two-way valve. A two-way valve only has two ports, whereas more advanced designs may have three or more, depending on what it will be used for. The two ports on a two-way valve are alternately utilized to allow flow of fluid/contaminated air as well as close it off. A two-way valve can be either “normally open" or “normally closed” style in its operation. With a “normally open” valve, the valve remains open until some type of electric current is applied to close the valve. By suspending the electrical power causes the valve to automatically reopen to its normal state. 4. Three-Way Valves
Three-way valves design come with three ports. These are mostly used when alternate and exhaustive pressure is required for working, as with a coffee machine or dishwasher.
5. Four-Way Valves
These valves are designed to have four or more port connections. Four-way valves are mainly used with a double acting cylinder or actuator. In this valve type, half of the port connections are responsible to supply pressure, and the remaining half part of connections provides exhaust pressure. You can call these valves to be normally open, normally closed or universal.
Take note of what specifications will be required for the system, and consider what type of fluid will be used in operation. Also, you should check out what type of material should be selected for the seals. Whether your equipment uses gas or air, steam selecting the right valve is crucial task to its proper working for Dust collection system.
Maniks Pilot operated Solenoid valve
This Solenoid Valve price in India is very efficient and has only one moving part called as Spare diaphragm. Maniks Pulse Valve has exclusive spring less construction. Due to high speed operation of solenoid pulse valve it not only saves the compressed air but also helps to provide shock air wave for removal of dust from filter bags. Solenoid Valves have High Flow, Long life and quick diaphragm operation result into reliable and economical operation of Pulse Valve.
Maniks have many clients - OEMs, cement, oil, gas, coal manufacturers and other end users such as chemicals, food and beverages industries have expressed their fulfillment regarding the performance of our products for their bag filters. These users have been continuously selling products and their spares from us to meet their replacement as well as requirements. This has encouraged us to meet bulk requirements. Our initial objective is to provide to our customers' requirements in quickest possible manner without compromising on the quality and brand of products. In short, we guarantee smooth and efficient delivery of products that comply with international standards with respect to quality. Maniks delivery data shows that 75% of our orders are shipped on the same day as the receipt of payment. Also, inspire of having high quality standards, our products are available at extremely competitive prices.