Air Compressor Check Valve Manufacturer

Your Reliable Air Compressor Check Valve Manufacturer

D&R Metal Industry is the air compressor check valves supplier in China. We are making an enormous number of air compressor check valves and distributing them to numerous places. We offer and guarantee that our clients all around the world will be satisfied.

  • More than 15 years experience manufacturer
  • Providing customized air compressor check valves all over the world
  • Offer sample testing to ensure the quality
  • Affordable air compressor check valve

Why is D&R the Leading Manufacturer of Air Compressor Check Valves?

D&R Metal Industry has over 15 years of experience in air compressor check valve production. We can supply you with a complete solution for your air compressor check valves as one of China’s most reputable manufacturers.

D&R Metal Industry can supply you with an affordable air compressor check valve for your needs thanks to our advanced technology and in-house manufacturing facilities. Don’t hesitate to contact us right away if you have any questions about the air compressor check valve.

D&R Metal IndustryYour Professional Air Compressor Check Valves Manufacturer


D&R 3/8″ Male Air Compressor Check Valve prevents air from leaking into the tank and the compressor head. It can also rebuild it for cleaning purposes.

Copper Portable Air Compressor Check Valve

Our Copper Portable Air Compressor Check Valve is resistant to contamination, ensuring a reliable operation. For all types of air compressor check valves, D&R is the place to go.

Male Threaded Air Compressor Check Valve

The thread connecting ends on the D&R Male Threaded Air Compressor Check Valve make it simple to install. It is for compressor piston pump, tube connecting, and air pressure tank.

Fitting Air Compressor Check Valve

Backflow leakage is 100% tested in the D&R Fitting Air Compressor Check Valve. Thousands of happy customers all over the world have put their trust in us.

Non-Return Air Compressor Check Valve

You can get the best Non-Return Air Compressor Check Valve at D&R. D&R’s products are in good working order and suitable for various applications.

Air Compressor Check Valve Ball Valve

D&R Air Ball Compressor Check Valve is in good working order and has a long service life. D&R offers all models of Air Compressor Check Valve at competitive prices.

Features of Air Compressor Check Valve

Prevent Backflow
The air compressor check valve disc opens under the pressure of the fluid. The fluid flows from the inlet side to the outlet side and closes automatically under the action of its own gravity to prevent the fluid from flowing back.
No Leakage
Whether an air compressor check valve will leak or not depends not only on the integrity of its walls but also on the internal sealing material. So we add a PTFE seal to prevent leakage.
Our workers use a clear division of labor process operation, the plant is equipped with accurate and efficient torque assembly equipment. With meticulous professional dedication, to ensure the delicacy of products.
Standard Thread
There are many types of thread, and different countries have different thread standards. D&R can process clear threads of air compressor check valves according to GB, ANSI, BS, DIN, ISO standards.

D&R Air Compressor Check Valve

D&R Metal Industry is a manufacturer you can trust. Over 15 years in service that many clients have much positive feedback regarding our services rendered. D&R can manufacture any air compression check valve based on your sample, drawings, or even a concept.

Many other industries throughout the world have put their faith in us. We guarantee that you will receive a cost-effective and high-quality air compressor check valve. All of our items are thoroughly check to assure reliable quality.

Brass Valve & Fitting Manufacturer

How We Manufacture Your Air Compressor Check Valve

cut material
We will choose the right brass material based on your order
test material
Material Testing
We will make strict testing on your Air Compressor Check Valves material, after the material is ok, then we will arrange the material cutting
brass forging
Forging process can ensure the right shape based on your order requirement
sand blasting
Sand Blasting
Sand Blasting will make your Air Compressor Check Valves surface clean and smoothly.
CNC machining
CNC Machining
CNC machining is the most important process to ensure all details are based on your order requirement.
brass plating
Brass Plating
We can make different plating according to your requirement, including the thickness, the color, the plating material, the test standard
Air Compressor Check Valves Assembly
We will assemble your Air Compressor Check Valves from different parts, you will see the final valves after this process.
water pressure testing
Water Pressure Testing
We make 100% air pressure testing on each of your Air Compressor Check Valves before packaging and shipping.

Rocket Your Business with D&R Air Compressor Check Valves

brass valve and fittings design

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.

Air Compression Check Valve

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.

Air Compression Check Valve

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

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-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

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

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

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.

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