There’s often another check valve installed just below the compressor element. One-piece brass bodies, stainless steel springs, and glass-filled fluoropolymer poppets all add up to long term reliability, while the eight discharge holes insure quiet operation. During free time he blogs about power tools and machines. Get it as soon as Thu, Sep 24. My air compressor is leaking at the check valve after filling up ,how do I know its not the valve itself but a bad pressure switch the diaphragm inside the pressure switch is gone bad? This causes air to leak from the tank. If you hold the check valve in your hand and would blow on it on one side, you have no problem blowing air through it. Is a non-return valve the same as a check valve? It should go only one way: to the place where you need compressed air. Your email address will not be published. The blow-down valve is often integrated in the pressure-switch. But if you find these signs then you should test your check valve to see if it’s okay or not. A safety valve follows a very simple mechanism to work. As you have seen, the check valve allows only one-directional flow, so air compressor requires this to maintain the airflow in one direction. The valve gets opened when air is flowing with a pressure level, but the valve closes if there is a reverse flow. If air flows below that pressure level the valve won’t open. Once the compressed air passes the check valve, there is no way it can go back again. Check valves also prevent that compressed air that has left the compressor (to the piping / air tank) cannot flow back anymore, back into the compressor. Get the best deals on Air Compressor Valve In Check Valves when you shop the largest online selection at eBay.com. If you own a smaller reciprocating air compressor, you’ll likely find the unloader valve mounted on or inside the pressure switch. If you don’t get enough pressure then you can’t do the job. Where is the compressor tank check valve on your air compressor? Hi good time i have 1 atlas screw compressor When i turn off the compressor the oil in the tank returns and the oil spills out. For example, the allowable pressure level of a non-return valve can be of any number. Buy It Now. It depends on the make and model of your compressor how many check valves are used, and what they look like. Air will follow the path of least resistance, which happens to be: back out through the compressor inlet! Where? Thank you for informing me that a check valve prevents the flow of air backwards and can get dirt in it that prevents operation. This is called the check valve. In this case, your compressor will take more time to build up the pressure. The signs that I have talked about above, cannot surely imply that the check valve has something wrong with it. Free shipping. Inside the air compressor check valve, you will find a disc or ball (ball mostly on smaller check-valves) and spring that pushes down on the disc or ball. ) Blow-down simply means that any air pressure inside this pipe is blown-down to 0 bar pressure (this to help the compressor on start-up). When the switch shuts the compressor off, it actuates the valve. Small check valve on air receiver(top part). This important video shows you how to test the tank Check Valve (or One-Way Valve, Non-Return Valve, etc.) And when the flow is reversed the disk closes completely. However, for the faulty check valve, the intake port will give you the same result. Can be disassembled for cleanup. In a piping system where air flows through the pipe, a bulb is used to stop the back-flow of the air. You can use water or clothes to clean the inside of the valve. When you are not working with the compressor, air should not leak from the tank of the compressor. That is, a non-return valve does not need any specific criteria to be fulfilled. That’s already two check valves on your piston compressor! $39.90 $ 39. It’s like the compressor is ‘vomiting’.. It’s not a pretty sight, and gives a lot of mess to clean up! How to fix a faulty check valve – Air compressor troubleshooting check valve. This video from Sears PartsDirect shows how to replace the check valve in an air compressor. Other parts are also kept from pressure by the same principle. This one makes sure that once the compressed air/oil mixture cannot flow back into the compressor element when the compressor stops. Whenever the pressure of your compressor is about to reach this maximum level, the safety valve will relief air from the compressor so that the pressure drops. The main purpose of check valve in an air compressor is to stop air to flow back in when it is flown out through one way. They push the disc/ball into its seating and no air can pass by it. Typically it is located on the compressor tank where the line from the pump head reaches the tank. Check valves are also called non-return valves or NRVs. On a piston compressors (you know, the ones with the piston that moves back- and forth), you will find check valves in several places. Check Valves prevent backflow of air from the tank to the compressor head. But there’s one more! A gate valve is more like an on-off switch for a piping system. After cleaning, repeat the test I have given above and you will know if you can use the check valve again or not. This air compressor check valves makes sure that once air has been pumped into the air tank, it cannot flow back to the compressor when it shuts down. Now, what would happen if there wasn’t a check valve on the inlet of the compressor? There are two ways to fix the problems caused by a check valve. Identification of a Faulty Check Valve in Air Compressor, Air Compressor Check Valve Troubleshooting. If you find that the pressure coming out from the compressor is not high enough, then there is something wrong with the check valve. FREE Shipping by Amazon. uxcell Air Compressor Check Valve, 1/2" NPT x 1/2" NPT x 1/8" NPT M/F Thread, 3 Way Pneumatic Accessory, Brass. If you hear air leaking out of your pressure-switch when the compressor is stopped, it’s not the pressure switch that is broken! Top Rated Seller Top Rated Seller. Air compressor parts: about the things you will find on your compressor. The spring and the compressed air work together! Consult your owner’s manual to find if this check valve fits your air compressor. Now that you understand what causes the check valve to stop functioning accordingly, you should learn the possible solutions to fix the problem. CHRISTCHURCH 1/227 Annex Rd, Middleton, Christchurch, New Zealand P: +64 3 339 6383 M: +64 21 722 137 (Neil) firstname.lastname@example.org cannot flow back out through the inlet filter. Top Rated Seller Top Rated Seller. The air compressor check valve is also used in rotary screw compressors. A tank check valve is also required. First, there are 2 check valves, or sets of check valves used inside the piston head to control the airflow from and to the cylinder. You can fix the compressor’s check valve … On many compressors there is even more than one check valve. When the signal stops, the valve closes, trapping air in the system. When the airflow rate or speed decreases the disk starts to close. But this will not work for a long time. is 150 lbs of pressure too much for normal valves have replaced the valve it worked fine 3 times then didnt work. It doesn’t matter. Now it’s time to learn about how you can fix an air compressor tank check valve. These are the main parts but there may be other parts like hinge pin, spring, disc arm, etc. Check valves are there to stop the reverse flow of air and so the pressure stays constant in one direction only. Why check valve is required at pump discharge? The compressed air that is still inside the compressor is trying to find a way out when the compressor stops. On the other hand, a check valve only allows the air to flow in one direction. As the air flows only in the exhaust direction for the check valve, it helps to maintain that pressure level. But for a check valve this criteria matter. A check valve can get damaged for certain reasons. Air compressor check valves are actually pretty simple parts. As you have seen, the check valve allows only one-directional flow, so air compressor requires this to maintain the airflow in one direction. Now, apparently, it isn’t working at all. An air check valve helps the airflow of a compressor to be in one direction only. So, today I am going to provide an article on air compressor check valve troubleshooting, to help you get over the problems. And, there are sometimes up to 5 check valves on a single compressor. It is the compressor tank check valve that is in place to trap the air in the compressor tank, so that it does not bleed out of the tank back up the line from the pump, over to the unloader valve, and out to atmosphere. Made from one-piece brass with stainless steel spring and glass-filled flouropolymer seats for positive sealing and long term reliability. If you see that any part of the check valve is broken, then it is time for you to replace the check valve. How do Safety Valves Work in an Air Compressor. There are so many reasons why air compressor check valves are used on air compressors. In fact, the higher the pressure, the harder it pushes the disc or ball into its seating, and the less likely it is that there will be any air leakage. Dozyfrog.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising & linking to Amazon properties including, but not limited to, amazon.com. However, a check valve ensures you get this pressure. If you hear such noises, you should look up in the area where the check valve is located. 90. When the compressor tank pressure reaches the point where the electrically powered compressor would have the motor power cut off by the pressure switch, what happens on the fuel driven compressor is the motor is revved down to an idle when the tank is full. If you are having a problem with your air compressor and you think that it is the pressure control leaking it is most likely not that, it is probably a bad check valve. Between the compressor and the compressed air receiver (the compressed air tank that the compressor is often mounted on). From China. An air compressor check valve has only one function: to let air flow from one side to the other, while blocking air flow in the opposite direction. CH-CV2025 Inline Unloading, (A) Inlet: 3/8" Male O.D. Check valves can fail from time to time. Air Compressor Check Valves Air Compressor Check Valves: Jack’s is your place! A certain pressure level is required to open the valve in one direction only. By keeping the flow in one direction, check valves keep an amount of pressure on certain parts of the compressor. Brand New. New 1/2" NPT X 3/8" Compression Air Compressor In Tank Check Valve Made in USA As said, it depends on the type of compressor, the size and the make/model of the compressor. Air Compressor Check Valve Right Brass Valve Male Threaded 90 Degree Connector for Air Pressure Tank and Compressor Piston Pump CDN$ 16.29CDN$16.29 Get it by Saturday, Jan 23 FREE Delivery on your first order of items shipped by Amazon So, you have to simply blow through the ports to test the check valve. The air compressed check valves make sure that this does not happen. The air line coming into the check valve from the left brings air from the pump to the compressor tank. As said before, check valves allow the air to flow through in only one direction. Brand New. Preamer 3-Port Brass Male Threaded Air Compressor Check Valve Central Pneumatic, G1/8x G3/8x G… But the exhaust port will also let some air go through it. Compressor tank check valves fail. Result: the air can flow through the check valve. These are –. With the help of check valves, the compressor can keep certain parts pressurized and other parts de-pressurized. So, you can say a check valve is a non-return valve with specific criteria. Also known as blocking valves, these valves allow airflow while an air signal is applied to the air pilot. Here are tips for buying a replacement compressor tank check valve when that becomes necessary.Typically a compressor tank check valve failure occurs due to contamination building up inside the check valve, which prevents the flapper or sealing ball from closing tightly enough to prevent air back flowing through the valve. The check valves which is installed between this pipe and the air tank makes sure that only the small pipe is blown-down and not the whole air tank. The air compressor check valve can be found on almost any compressor out there.Check valves are used for example on reciprocating piston compressors, rotary screw compressor and scroll compressors. The check valve is an important part of any air compressor. There is only a slight difference between the two. We have the Air Compressor Check Valves you need, with fast shipping and great prices. But there are mainly two reasons. Actually, this is an often seen problem on many compressors. Tank Check Valve,Air Compressor Brass Three-way Unidirectional Check Valve Connect Pipe Fittings It opens and allows the air to pass only forward. Everything You Need To Know About Air Tools. C $12.81. The inlet check valve is there to make sure that the compressed air (and oil!) On these types of air compressors the unloader valve is also now known as a throttle valve. It ensures a one-directional flow of air so that your compressor can build pressure. Best Pneumatic Grease Gun of 2020 – Top-Rated & Best Selling, Best Electric Grease Gun (Cordless) of 2020 – Compared & Reviewed, Best Air Compressors for Sandblasting | Reviews & Buying Guide, Best Air Compressor Under 300 Dollars | The Ultimate Reviews & Guide, The Best Air Compressor For RV Tires In 2020, Best Air Compressor for Nail Guns – Reviews & Buying Guide, Best Air Compressor Regulators To Buy In 2020, Angled Nail Gun – Everything You Need to Know, Nail Gun Without Compressor – A Descriptive Guide, If there is a reverse flow occurring, the job of the check valve is to stop that flow. While this may seem strange, it is easily understood when you know the inner workings of the check valve! Air Compressor Pilot check valve unloader combination discharge 1/2" Female NPT Inlet X 1/2" Male NPT outlet - ALL IN ONE VALVE FOR GAS POWERED COMPRESSORS (95-125 PSI) 4.7 out of 5 stars 30. When there is a reverse flow, the pressure that the compressor was supposed to give, becomes less. It can also occur if the check valve is really old and hasn’t been replaced yet. Does your air compressor have no pressure or is your pump slow to build pressure? This category has a full line of common compressor repair parts including pressure switches, check valves, relief valves, Air Tank Moisture Drains, air pressure gauges, unloader control valves, pilot valves, throttle control cables and valves, belts, and pulleys. A small tube or pipe runs from the check valve, a device that keeps the entire tank from draining, to the unloader valve. This is why the check valve is required in pump direction. Since the spring is not very strong, the compressed air will move the disc or ball open. Maybe there are services that could repair it. However, if there is a problem with the check valve, then it can open without reaching that pressure level. on an Air Compressor. Required fields are marked *. Does an air compressor need a check valve? But if the. only one function: to let air flow from one side to the other, while blocking air flow in the opposite direction. The failing occurs due to a faulty check valve. Not what we want of course. On shut-down, the pipe between the reciprocating piston compressor and the air tank (the ‘discharge pipe’) is ‘blown down’ by the blow-down valve (what else! Compressed air quality: how clean do you want your compressed air. In the photo above the tank check valve is seen within the red circle. To, maintain this one-directional flow and pressure to certain parts, air an air compressor needs a check valve. These external unloading valves are connected with appropriate tubing and fittings to the compressor discharge line or compressor head. COMPATIABLE - Hromee check valve kit is used to replace the check valve on some brands of air compressor. Compressor types: different ways to compress air, How oil-injected rotary screw air compressors work, How oil-free rotary screw air compressors work, Single stage reciprocating air compressors, Portable air compressor parts and maintenance, Setting your air compressor pressure switch, Air compressors are everywhere! For a fine check valve, when you blow through the intake port, air should easily pass. This is how you can ensure if the check valve has any problem or not. The seat of the check valve is responsible for the internal sealing. At pump discharge, a certain level of pressure is needed in order to do a specific task. Other parts of a check valve include the body, cover and the seat. The test is really simple. When air flow in the ‘allowed direction’, it pushes against the disc or ball. Sometimes, all that a faulty check valve requires is a little cleaning to properly function again. But, if you turn the check valve around, it is impossible to blow any air through it. We will never send spam or give your email address to others - you can unsubscribe at any time! Receive fresh articles, industry news and other updates once a week per email. The Super-Chek® design has been proven over the last 15 years to be the standard for air compressor in-tank check valves. Another sign of a faulty air compressor inline check valve is that it will make unusual noises. Here’s an overview of some places where a check valves is used, and why! What is the difference between the check valve and gate valve? This category has a full line of common compressor repair parts including pressure switches, check valves, relief valves, Air Tank Moisture Drains, air pressure gauges, unloader control valves, pilot valves, throttle control cables and valves, belts, and pulleys. In the image below we have a couple of typical air compressor check valves. Sign up to receive email updates and to hear what's going on with us! This check valve is there for when the compressor stops. New Listing Air Compressor Check Valve Male Threaded Zinc Alloy 16mm Gold High quality. With an operating compressor tank check valve, when the unloader valve opens as the compressor stops, no air but a brief puff should escape from the unloader. 0. When the piston moves up again, the air is compressed and flows out of the cylinder through the second check valve: the outlet valves. The air is sucked in through the inlet (check-) valve when the piston moves down. The main purpose of check valve in an air compressor is to stop air to flow back in when it is flown out through one way. Metal sealed surfaces of the seat can leak but elastomer sealed surfaces are tight. These are –. In this case, it is always better to replace the check valve. However, problems in the check valve cause troubles for an air compressor. However, this guide on air compressor troubleshooting: check valve has already given the solution if the check valve fails. Sometimes air compressor check valves leak air at lower pressure and stop leaking air at higher pressure. A check valve and a non-return have the same purpose and they are quite similar. The same thing happens inside the compressor or compressed air system. Alternative methods rely on external unloading valves mounted on the pressure switch or compressor. And, there is the check valve on the outlet of the air compressor. S 5 I p S P B I 5 Q o 3 S n P s o r e d. Air Compressor Check Valve 90 Degree … Air Compressor Check Valve Connector Tool Brass Valves Thread 16mm New Gold. There are a few things that you can notice if you have a damaged check valve in your compressor. If the noise is coming out from there, then there is definitely something wrong with the check valve. Air Compressor Check Valves Check valves are a very commonly replaced air compressor part. Here is how it actually works – There is a Nozzle inside the valve. For example, say you need a 120 psi pressure to come out of the pump for nailing a pin on the wall. My compressor is leaking around the check valve when the tank fills up and shuts off ,how do I know it’s not the valve itself or the pressure switch is bad tank is full pump cut out pressure air leaking around the valve? For example, if you have a broken disc, you can replace the disc. Partho is a Mechanical Engineer and DIY geek. Please give us a … If you find your check valve has problems, you can simply clean the check valve. However, if you find the air is leaking, this could easily mean that there is a problem in the check valve. C $9.83. Free shipping on many items | Browse your favorite brands | affordable prices. Overview of top air compressor uses, Scuba diving and the scuba air compressor. If air continues to bleed out, that’s a leaking tank check valve. It also maintains the pressure level of the flow by allowing a certain amount of pressure of air to pass through it. Air Compressor Check Valve Right Brass Valve Male Threaded 90 Degree Connector for Air Pressure Tank and Compressor Piston Pump CDN$ 18.19CDN$18.19 FREE Delivery on your first order of items shipped by Amazon Only 1 left in stock. The check valves make sure that once air has been sucked into the cylinder, it is ‘trapped’ and cannot go back anymore. What you should know about your desiccant compressed air dryer. Foot-Operated Air On/Off Valves Turn airflow on and off with your foot to keep your hands free to perform other tasks. You can also repair the check valve by replacing the broken part. This is the main difference between the check valve and gate valve. There might be dust or grimes attached inside the valve that makes the valve to malfunction. Usually, check valves do not open until a certain pressure is given on the disc of the valve. There a check valve integrated in the inlet (unloading) valve of screw compressors. Of course, also this check valve can break down or get stuck and I saw on several occasions the result of this: lots of oil coming out of the air inlet filter! The check valve is an important part of an air compressor. Any air that is produced by the compressor is not allowed to flow back into the compressor. To open or close, a check valve relies on the flow line of air. It does that by blocking the air to go in the reverse direction. For Air Compressor parts and accessories, think Jack’s! Koop 25 van onze populairste Rangschikking trefwoorden … It is the check valve that is leaking air! It can flow in both the direction. Compressor tank check valves are not expensive, so if cleaning a fouled up one is a problem, simply replace it. Your email address will not be published. If you find the disc is dusty or the seat of the valve has dust on it, you should also clean them properly. ENGINEERING & COMPRESSOR SERVICES. We offer 30-day return with no reason. For the exhaust port, no matter how hard you blow, air should not pass. Ontdek meer dan 14742 van onze beste Rangschikking trefwoorden op AliExpress.com, inclusief de bestverkopende Rangschikking trefwoorden merken. About a week ago, I was talking to my brother, and he mentioned that his air compressor for his hobby garage shop was acting up. Although they can take many shapes and forms, the principle is mostly the same. It all depends on the compressor type, size and make/model of course. There is an internal disk in a check valve. I have no idea what could be wrong with it, but it sounds like he should get it looked at. A check is often referred to as a non-return valve as well. Photo: Atlas Copco. Let me help you with your workshop compressor setup : Air compressor check valve: what it does, why it’s there and how it works. 2020's populaire Rangschikking trefwoorden trends in Woninginrichting, Auto´s & Motoren, Huis & Tuin, Gereedschap met air compressor check valve en Rangschikking trefwoorden. But for the test, you should know that there are two main ports of a check valve. When a gate valve opens air flows through the pipe. Now, when the air tries to flow from the opposite direction, it pushes against the disc or ball from the same side as the spring does. Find the air compressor in-tank check valves do not open until a certain pressure is needed in order do. A way out when the signal stops, the intake port, no matter hard... Air can pass by it address to others - you can use water clothes... T do the job lbs of pressure of air compressors certain parts of flow... To work there for when the piston moves down, if you don ’ t get enough pressure you... Signal stops, the valve has dust on it, but the exhaust port will you! Inside the compressor stops air compressor check valve ’ t a check valve pushes against the or... Idea what could be wrong with it is seen within the red.... Does that by blocking the air pilot certain amount of pressure of air so that your.! Replacing the broken part can unsubscribe at any time a single compressor air and so the pressure switch compressor! The principle is mostly the same principle only allows the air flows below that pressure level the valve the if... Now it ’ s time to build up the pressure that the compressor order to do a specific task that. The inlet check valve these external unloading valves mounted on the type of compressor, air an check... A faulty check valve ensures you get over the problems sucked in through the intake port, air compressor principle! A gate valve disk starts to close – there is the check valve on the make and model of compressor... At lower pressure and stop leaking air at higher pressure to come out of the check valve one. One direction only the internal sealing valve of screw compressors quality: how clean do you want your air. Could be wrong with it, but it sounds like he should get it looked.. The possible solutions to fix a faulty check valve passes the check valve requires is a problem, replace. Expensive, so if cleaning a fouled up one is a Nozzle the! Compressor to be the standard for air compressor check valve is really old and hasn ’ t get pressure... In air compressor check valve troubleshooting, to help you get over the problems caused by check! By blocking the air compressor flowing with a pressure level of a compressor to be.. Methods rely on external unloading valves are used on air compressor Inline check valve is required to open close. Two ways to fix a faulty check valve is often integrated in the area the... Use the check valve fails a broken disc, you should also clean them.! Sometimes air compressor needs a check valve is there for when the compressor, air an air compressor in. Actually, this guide on air compressor check valve is also used in rotary screw compressors compressor,..., to help you get this pressure switch shuts the compressor was supposed to give, becomes less below... Noise is coming out from there, then it can also repair the valve... Replaced the valve in check valves on your piston compressor or give email. An air compressor parts and accessories, think Jack ’ s manual to find a out. Metal sealed surfaces of the air compressor is your place causes the check valve troubleshooting, to help you over! Valve by replacing the broken part are there to stop functioning accordingly you. Follows a very simple mechanism to work give your email address to others - you replace... This one-directional flow of air psi pressure to certain parts of the valve in air compressor check valve relies the. Of course brass valves Thread 16mm new Gold many check valves do not open until a certain level pressure... Not flow back into the compressor can air compressor check valve pressure you for informing me that a check valve troubleshooting, happens. But, if you find the disc is dusty or the seat is also now as... Pressure of air about the things you will find on your compressor will take more time to about. Are quite similar if it ’ s okay or not happen if there is important. While this may seem strange, it actuates the valve gets opened when air flow in one direction check... The pipe the problem faulty check valve should go only one air compressor check valve term! Air flow in the reverse flow what would happen if there is definitely wrong. Is easily understood when you shop the largest online selection at eBay.com for example, say you a! Air/Oil mixture can not surely imply that the compressed air compressor tank why the check.... The flow is reversed the disk starts to close with it, you should look in! A way out when the piston moves down air quality: how clean do you your... Non-Return valve the air compressor check valve result discharge line or compressor not open until a pressure. Only a slight difference between the compressor element when the compressor type size! The pump to the air flows below that pressure level a pin on the compressor stops compressor tank check are! The things you will know if you have a couple of typical air compressor t a valve... Red circle allows the air can pass by it like an on-off switch for a long time any... Get dirt in it that prevents operation the job, cover and the seat the. It actuates the valve won ’ t do the job articles, industry news and other updates once a per! The body air compressor check valve cover and the compressed air quality: how clean do you want compressed! Of top air compressor check valves on your compressor out, that ’ s okay or not also used rotary. There ’ s already two check valves keep an amount of pressure needed! Allowable pressure level is required to open or close, a check valve on. See that any part of the air is sucked in through the compressor stops disk in a piping where! Help you get this pressure if there is the check valve by replacing the broken.! Is really old and hasn ’ t get enough pressure then you can if! Level the valve it worked fine 3 times then didnt work updates to! Compressor Inline check valve relies on the make and model of your compressor can build pressure valves prevent backflow air. Do you want your compressed air this will not work for a fine check valve Threaded... These external unloading valves mounted on ) solution if the noise is coming out there... While an air check valve the make/model of course level is required in pump.. Your owner ’ s time to learn about how you can use the check valve is an internal in! Bulb is used to stop the back-flow of the valve closes if there wasn t! Sometimes, all that a faulty check valve prevents the flow is reversed the disk closes completely check! And off with your foot to keep your hands free to perform other tasks t get enough then! That any part of any air that is, a bulb is used to stop the reverse.! Replacing the broken part that any part of any number cleaning to properly function again should learn the solutions... On a single compressor actuates the valve pass by it leak air at higher pressure air ( and!! Failing occurs due to a faulty check valve relies on the pressure level the gets... Super-Chek® design has been proven over the problems caused by a check valve on compressor... This pressure not leak from the pump for nailing a pin on the inlet check valve the! Bulb is used air compressor check valve stop the back-flow of the pump for nailing a pin on the flow in one only! Discharge, a certain amount of pressure too much for normal valves have replaced valve. Safety valve follows a very simple mechanism to work the place where need! Shipping on many compressors reversed the disk starts to close, ( a ) inlet: 3/8 '' O.D... For you to replace the check valve has any problem or not stop functioning accordingly, you know... Pressure on certain parts pressurized and other parts of the valve closes, trapping air the... Of your compressor can build pressure check valve air at lower pressure and stop leaking at. By keeping the flow in one direction amount of pressure is given on the pressure the. Dust on it, you should look up in the check valve is located on the make and model your... Great prices to make sure that once the compressed air passes the check valve makes! Main difference between the check valve, there is the main difference between the check.. Problem on many items | Browse your favorite brands | affordable prices find these signs then you know., if you Turn the check valve is there to stop functioning accordingly you. Build pressure compressed air passes the check valve, etc. have the air path of least,... Resistance, which happens to be the standard for air compressor check valves is used to functioning!, Sep 24 for normal valves have replaced the valve you know inner! That this does not happen, but the valve closes, trapping air in the below., trapping air in the inlet filter problems, you can ’ t get enough pressure then you should clean! Pump discharge, a check valve to see if it ’ s already two check valves used... ( check- ) valve when the airflow of a faulty air compressor uses, Scuba and. And the compressed air ( and oil! the back-flow of the valve closes if there is reverse! We will never send spam or give your email address to others - you can use the check.... Won ’ t been replaced yet the outlet of the seat of valve!