What is the Air Pump Check Valve all about? In a secondary air injection system, air must be injected into the exhaust system, but exhaust fumes must not be able to escape. This is accomplished by using a one-way air pump check valve. Think of it as a one-way street -- air can enter, but exhaust gases can't leave. These secondary injection systems are used to ensure a fuller burn of spent exhaust gases, which both improves fuel economy and eliminates pollution from the vehicle exhaust. It’s an important part of your emissions system. Generally, the air pump check valve is mounted near the top passenger side of the engine, although this can vary. Some vehicles have more than one check valve, as well. Over time, the air pump check valve is subject to not only high heat, but also other forms of damage. It can deteriorate and degrade. While there is no set lifespan for these components, they can and do fail. The air pump check valve is not inspected during normal maintenance.

A failed valve will cause the Check Engine light to turn on. Your car cannot pass an emissions test with a bad check valve. The air pump check valve is verified to see if it needs to be replaced The defective air pump check valve is removed The new air pump check valve is installed The air pump check valve is tested for operation The vehicle is tested to ensure proper operation of the air pump check valve A secondary air injection system is an important part of your emissions control, and the air pump check valve is a critical component. If it fails, it’s possible for exhaust gases to escape, or for fresh air to be blocked from entering the exhaust system. If you suspect a problem with your air pump check valve, have it diagnosed and repaired by one of our expert mechanics. What common symptoms indicate you may need to replace the Air Pump Check Valve? Check Engine light on with check valve failure code Will not pass emissions test

How important is this service? While you won’t notice much in the way of performance degradation if the check valve fails, your Check Engine light could come on, and your car will not pass emissions testing. Because of this, you should replace a faulty air pump check valve as soon as possible.HI, can anyone recommend a QUIET air pump? I have hardwood f... HI, can anyone recommend a QUIET air pump? I have hardwood floors and the one I have vibrates and is very noisy. best filter 55 gallon freshwater fish tankI have it on styrofoam but it is still noisy. fish tank siphon pets at homeAlso, wanted to know if the under gravel filters are worth putting in the tank, how do they work, do they replace the regular filters, or do they work with the regular filters?betta fish tank cover

Posted on Aquarium Equipment You can try Tetra air pumps(whisper ones) Often you can quiet an air pump by installing an extra valve to bleed off excessive back pressure. Putting a sponge type pad under the pump will also reduce noise. When the air pump sits below the aquarium water line, a one way valve (check valve) will prevent a back syphon in the event of power outage. Under gravel filters work by circulating water through the entire substrate, which must be at least two inches thick. acrylic fish tank roundThe filter consists of one or two plates with lots of small holes, one or two big holes and some feet that keep the filter plate a half inch or so off the aquarium bottom. aquarium air pump eheimThe big holes hold a lift tube, which also contains a smaller, air tube. marine aquarium shop near me

As air bubbles up through the lift tube, it carries water. That water is drawn through the substrate and the little holes in the filter plate. Under gravel filters are now considered old school, but they are easy to control with air valves, and they work fine if the aquarium receives regular partial water changes and the aquarist avoids overfeeding and over crowding. For years, under gravel filters alone have worked well in all of my aquariums. To be honest, most aquarists prefer the more sophisticated and expensive types of filters. Probably they are better in some aquariums, and no doubt they are wonderful contraptions......or at least the promotional literature says so.and as soon as I figure out what this is "extra valve to bleed off excessive back pressure" I will be sure to do this. My air pump is already on a thick piece of sponge or something,(it was packing material)which definitely made it a lot quieter. I am thinking I have too much air pressure, from everything I've read.

Hopefully this will not harm the fish, cause it is going to take a lot of reading on my part until I figure out the whole valve thing. Can there be too much bubbles? My guppies seem to love playing in them. I am new to all this so bare with me! I have only had my tank (55 gal.)for about 2 months now, (technically it is my 7 yr. old daughter's I think for now I will skip the under gravel filter, I am managing fine with weekly water changes, was just thinking if it helped if I could stretch the changes to every week 1/2 to 2 weeks. I have 15 small fish in there, so far all seem to be happy. My next post will be - to post a pic of my Mickey mouse platy to see if anyone can tell me if she is bloated, pregnant or just a 'fatty' platy.I love this site! Everyone is always so helpful, regardless of how silly the questions are, to a newbie in the aquarium world, it all seems like a foreign language, well it does to me! The bleed valve is just a regular airline valve. It should be placed in the airline tube between the air pump outlet and the check valve.

Both valves are inexpensive. When you open the extra valve, it will release some of the pressure on the pump. Adjusting the bleed valve will also adjust the flow rate of the filter. Some filters have enough intake power to trap fish. To avoid this problem, you can add a sponge filter over the filter intake tube. I have a fluval 2 they are really quiet and are great. The under gravel filters i believe are only good for clearing the floor and gravel. You cannot get one if you have sand as it will just clog. I would just stick to your regular wall filter if i was you. Hope that helps Ross The bleed will work if there's enough pressure left to do what you want; The type of noise the pump makes changes as the flow valve is opened and closed, too. You may find a tone that is music to your ears. Tetra Whispers are quiet(er), they're not really annoying. I have a Tetra Whisper in a wooden box lined with cork and felt with vents I cut into the bottom and the top of the back side, and it's barely audible.

However, the buzzing sound still comes through the air line some. Squishy silicone tubing transmits less than harder PVC tubing. If you can put it in the basement or in a closet or different room, that would be better. Be sure you put a check valve in regardless. Rena is the quietest air pump I have ever had, and I've had a lot, There us also a vid on youtube on how to make your Rena pump even softer by applying hot glue to the attachment points after opening it up. They promise to pump to a two foot level too. This is an old topic, but a good one, so: Of the ones I've tried, JW Fusions are very quiet, but don't make much pressure and I've had a 50% dead out of the box rate. The dead ones are as quiet as it gets. Danner Aqua Supremes are by far the best overall air pumps I've had. Very quiet, well made, great pressure and volume. They are also sold as petco and petsmart store brands. I have 4 of them in various sizes, single, double and quad output models. Fluval Q pump, very noisy, but excellent pressure and flow.

Tetra Whisper, the name's a dream, noisy, a bit less than Fluval, pressure and flow similar to Fluval. Azoo pump, unreal noise, extremely noisy, good pressure and flow. My tetra whisper is extremely quiet. I am laying in my room right now with nothing on and my room is very quiet. I have the aqueon quiet flow 10 filter and the tetra whisper 10 no noise at all. On my 20g and my moms 20g they have the same filter (it is recommended for up to 20g, flow rate 100gph guaranteed. and the tetra whisper 60 split for both of them quiet as ever. I have a pump two feet behind my head where I watch TV, so a little more noise makes a big difference. I miss the fusion, but one every 3 months was silly, they wore out fast, too. The petco/danner that's been there for a year is pretty close. In all fairness, different models of a particular pump have different noise levels. The danners vary, but all are very quiet. The whisper I have (still do) is a 40, it's in my basement with 4 danners, two of their biggest 4 outlet ones and it's definitely the loudest.

But, the Fluval (.5 model) was much noiser than the whisper and the azoo (6500) was incredible. Seems the smallest and largest pump in a mfgrs line are the quietest, but that's just my impression, a few posts up, Fluval was liked a lot. An individuals impression of what sounds are annoying probably enter into subjective noisiness considerably. This topic is about air pumps, cory, but I do agree that whisper filters are quiet and they work well, too. Just wanted to bring forward that the filter is sometimes the culprit for that annoying sound. Yeah, I suppose anything can be the culprit, there are two canister filters right behind me too and they're almost inaudible. I wish this stuff could go somewhere else. The bubbles coming from the tank air stone make quite a bit of noise, probably more than the air pump, but it's a smooth, kind of calming sound. Placing the air pump on top of a kitchen dish sponge will absorb the vibration and sound Eleni wrote:HI, can anyone recommend a QUIET air pump?