D&R Metal Industry – Your Worthy Air Compression Check Valve Manufacturer in China

The D&R check valve is a vital aspect of every air compressor. The check valve of an air compressor can be found on practically any compressor. Check valves are working in reciprocating piston compressors, rotary screw compressors, and scroll compressors, among other applications. There are multiple check valves on many compressors.

We’ve been focusing on the manufacture and design of air compression check valves for nearly two decades. We have a long-standing reputation in the international industry for providing cost-effective and high-quality air compressor check valves.

The sole purpose of a D&R air compressor check valve is to allow air to flow from one side to the other while blocking airflow in the opposite direction. You should be able to blow air through the check valve if you hold it in your hand and blow it on one side. Turning the check valve around, however, makes it challenging to blast air through it. Inside the compressor or compressed air system, the same thing happens. There is no way for pressurized air to return once it has passed through the check valve.

D&R air compressor check valves are on air compressors for a variety of reasons. On specific compressors, there are as many as five check valves. Of course, it all relies on the compressor’s kind, size, and make/model. As previously stated, check valves only allow air to travel in one way. The compressor uses check valves to keep particular sections inflated while others depressurized. The compressed air discharged from the compressor (to the pipes or the air tank) cannot return.

If you’re not sure which air compressor check valve is suitable for your application, D&R provides excellent customer service. We can highly recommend the appropriate air compressor check valve for your application.

D&R has a skilled engineering staff on hand to assist you with product development. All of our engineers have more than 20 years of expertise in our field. You can customize the product by adding your brand on the surface and changing the shape, parts, material, and packaging, among other things.

Please get in touch with us today!

Air Compressor Check Valve: The Ultimate FAQ Guide

Check valves on air compressors are non-passing or one-way valves. 

Such a line through which the check valve position can only flow through the check valve.

The air compressor check valve might cause issues. 

If you’re interested in learning more about the several types, their operation, and their spatial location, or if you need assistance troubleshooting your air compressor check valve, this article will assist you.

 What Is Air Compressor Check Valve?

Air Compressor Check Valve

 The air compressor check valves are essential to the effectiveness of a compressed air system.

The air receiver tank or main header is located between the compressor and the air receiver tank. 

When a compressor shuts down, a check valve prevents air from flowing back into the inlet line. 

Meanwhile, unloader valves allow air to leak out of the compressor line to lessen the load.

 What Is The Purpose Of The Air Compressor Check Valve?

An air compressor check valve is found on practically every air compressor on the market since they are critical to the proper operation of air compressors. 

Reciprocating piston compressors and rotary screw compressors are both typical applications for these components. 

Multiple check valves are available in some compressors.

They serve only one purpose in the air compressor system: to allow air to flow from one side to the other while preventing air from flowing in the other way. 

It will enable compressed air to travel through the check valve and not recirculate. 

Moreover, they are critical to the compressed air system’s overall performance. 

What Are The Types Of Air Compressor Check Valves?

Consider both in-tank and in-line check valves, as they are incredibly distinct from each other in more ways than one.

• In-tank Check Valve

In-tank check valves are installed directly into the tank to prevent backflow through the compressor pump. 

They effectively seal the compressed air within the tank.

In-tank check valves typically have one female threaded end and one male threaded end.

In-tank Check Valve

•  In-line Check Valve

In-line check valves are located “in-line” on the air pipe/hose. 

While an in-line check valve does not have the same purpose as a tank valve in sealing the tank volume, they function similarly in preventing backflow.

They often have male and female threaded ends, allowing for connection in the center of piping/hose lines.

In-line Check Valve

 How Does The Air Compressor Check Valve Work?

Air compressor check valves are essentially quite essential components. 

However, they come in a variety of shapes and sizes; the basic idea remains the same.

While the compressor operates and compresses air, air flows from the pump head down into the tank via the tank check valve. 

Because the check valve is a one-way valve, once compressed air is in the compressor tank, it should only exit via the discharge coupler.

An airline connects the pressure switch and the unloader valve to the air compressor check valve. 

When the compressor stops due to cut-out pressure, the pressure switch frequently opens the unloader valve.

Any trapped air over the piston is released through the open unloader valve as soon as the compressor is turned off.

It designs to work in conjunction with the compressor tank check valve. 

Tank Check Valve Maintains Air Compressor

Assume there is no compressor tank check valve and the unloader valve is open. 

Then the air above the compressor piston and the air in the compressor tank will escape through the unloader valve.

The air compressor tank valve aims to maintain compressed air in the tank to be available for use by downstream air tools.

 Air Flows Into The Air Tank Through A Check Valve

When the compressor components are working correctly, and the pressure switch detects a drop in tank pressure.

The pressure switch relay closes, and the compressor motor goes on.

The unloader valve closes when the compressor pressure switch (typically a toggle on the pressure switch) closes.

 The air compressor is now functioning, filling the air tank.

 It means that the tank check valve is open and that air is only flowing into the tank.

When the tank’s air pressure reaches the pressure switch’s cut-out pressure, the pressure switch opens, the motor stops, the unloader valve opens, and the tank check valve closes, repeating the cycle.

What’s The Best Way To Inspect A Check Valve?

Air Compressor Check Valve

When the fluid’s temperature permits, Placing your hand on the valve and your ear close to it is an excellent place to start. If you hear fluid running, there is a leak. 

The check valve should only make a little “click” noise as it closes, preventing water from flowing backward.

 How To Clean An Air Compressor Valve?

Drain the Compressor Tank Reposition the air compressor in its regular operating position.

Turn counter-clockwise the ring on the compressor tank’s drain. 

Ascertain that the drain valve is fully open. 

Empty the tank of any water, sludge, oil, or even rust. 

Maintain an open valve to assist in drying it out.

Is It Possible To Clean A Check Valve?

Air Compressor Check Valve

Cleaning a Check Valve:

•     Using the two wrenches, carefully remove the check valve, taking care not to damage the internal spring and ball valve.
•     Rinse or wipe the inside of the check valve to remove any debris.

How Does An Air Compressor’s Pressure Switch Work?

 A pressure switch is a mechanical device that controls the operation of an electric air compressor by sensing the air pressure. 

This virtual device completes the circuit and supplies power to the motor as long as the system pressure is less than a particular value.

 The valve will close if the pressure on the output side is higher (or insufficient pressure on the input side is inadequate). 

It is assuring that the compressed higher-pressure air does not flow backward.

 What Happens When Air Compressor Check Valves Fail?

 Along with creating leaks, a faulty check valve can cause harm to the compressor. 

If a check valve breaks in its open position, air might flow back into the compressor from the header when it is not working. 

It can cause the compressor to spin backward, potentially destroying it.

 However, we frequently see check valves fail when they are closed. 

The blocked valve can create uncontrollable pressure increases when this occurs, eventually resulting in a compressor outburst.