Table of Contents
Guide to Check Valve For Aquariums
A check valve allows flow in one direction and prevents it from flowing the other way. It’s also known as a non-return valve. The most common use of this device in an aquarium is in canister filters that push water through filter media back into the tank in order to force water into the overflow in the event of a power outage.
Main types of check valves
1) Swing check valve – A swing check valve is a reliable way to connect your canister filter output pipe to your aquarium without worrying about it leaking or blowing off at high pressure or flow rate which makes this an ideal choice for most applications involving canister filters involving gravity being pushed into the tank especially when combined with the angled pipe.
2) Lift check valve – This type of check valve should be used when your canister filter or other device is above the tank (ex: saltwater mixing station). At such an application, you want to make sure that water cannot run back into your canister filter after it has been pumped through the filtration system thus lifting up the pipe will ensure this by operating like a lift or elevator that keeps everything out while allowing everything to flow down.
3) Needle check valve – This type of check valve is most notably found in canister filters designed for canister filters to go above or below your tank (ex: spray bars, brine shrimp hatcheries).
4) Floating ball check valve – Float valves are also commonly used in saltwater mixing stations because they allow water into the system only when the water level rises high enough to float up the ball and it works like a normal check valve in that water can only flow one way.
5) Magnetic ball check valve – They work by using a magnet let into the pipe with the ball attached at the end of it where it shuts off when lifted up or dropped down then water flow is allowed back into the system.
6) Chamber type check valve – This type of check valve is often used in small pond applications where gravity isn’t available because they require air pressure produced by the air pump so this means you have to have your air pump running whenever you want water to flow from the filter into the pond.
7) Aquarium overflow check valves – Overflow check valves are used by most people who have an aquarium with an overflowing beach type filter although they’re just one of many options that exist which included balls, swing, lift, or needle types.
Best Check Valve For Aquariums – FAQ
What is an aquarium check valve?
A check valve is used to prevent water from siphoning out of your aquarium. If water siphons out it will usually damage the air pump, and lead to water on your floor. In extreme cases, this can lead to a fire if electronics are sitting in water.
Do I need a check valve on my aquarium air pump?
Check valves are a must when using an aquarium air pump. They prevent a phenomenon known as back siphoning, which can have serious repercussions. When in doubt, blow through the check valve to verify which direction air will flow. Always keep extra check valves on hand, if one fails.
How do you install a check valve?
Here are the steps to install a swing check valve:
Check Valve Size. Before you purchase your swing check valve, make sure that you know the size and style you need.
Look Inside the Valve.
Check the Edges.
Confirm Placement of Valve.
Attach Swing Check Valve onto Pipeline.
Test the Valve.
Is a check valve necessary?
The check valve will help your water system maintain pressure when the pump shuts off and also prevent backspin, upthrust, and water hammer.
It is recommended that at least one check be installed in all submersible well pump installations.
Many good pumps have built-in check valves.
Are bubblers good for aquariums?
An aquarium bubbler, also called an air stone, adds beneficial bubbles to the aquarium’s water. When these bubbles rise to the surface, they help the oxidation of water and improve the living conditions of fish, plants, and other living creatures in the fish tank. Aquarium bubblers usually run 24/7.
How do you use a check valve?
A check valve may be installed on the suction side of the pump to maintain the pump’s prime in the event of a pump shutdown. A check valve will be used commonly on the discharge of the pump to prevent backflow from the downstream system when the pump shuts off.
Does a check valve prevent backflow?
A check valve provides a basic form of backflow prevention, preventing water from flowing in the wrong direction. National Fire Protection Association (NFPA) model codes and standards require them in various places on fire protection systems, and check valves are essential components of backflow preventers.
What does the check valve do on an air pump?
Located between the compressor and the air receiver tank or main header, a check valve is designed to prevent air from bleeding out of the tank or header and back into the inlet line when a compressor shuts down. Unloader valves, meanwhile, allow air to bleed out of the compressor line to reduce the load on startup.
How does an aquarium check valve work?
The check valve only allows the air to flow through in one direction. If you installed the check valve upside down, no air is going to flow through the valve. So if you find that your check valve isn’t working, simply remove the pipes and flip the check valve around – no harm done.
Where do you place an air pump in an aquarium?
You don’t put the air pump in the fish tank. Only the tube and the object it attaches to go in the tank. That said, if possible, it’s best to place the air pump near the top of the fish tank (water level). This prevents water from flowing back into the air pump in case of a power failure.
Is a check valve the same as a backflow preventer?
A backflow preventer is to be used in high hazard situations and is meant to fully protect the potable water with their fail-safe design while a check valve is used in low hazard situations and prevents backward water flow but it does not have the same fail-safe components.
Should a check valve be installed vertically or horizontally?
The check valve can be installed in horizontal or vertical piping runs, with the flow running upward.
How much does it cost to install a check valve?
The device itself ranges from $35 to $600, while professional labor costs between $100 and $400.
Expect to pay between $70 and $250 for a backwater or check valve, including install.
A single valve is easier to install than a comprehensive double-valve preventer system.
How often should a check valve be replaced?
How often should a check valve be replaced
Are air bubbles bad for fish?
Too many bubbles are unnecessary for the fish because it’s not a natural environment. It’s not the bubbles that carry the oxygen in the tank, it’s the movement of water that carries the oxygen which the pump does for you.
Should I cover my fish tank at night?
Should You Cover Your Fish Tank at Night? If you have fishes that jump, it is recommended that you cover your tank, not just at night but also during the day. You might also want to cover your tank at night when using a powerful lighting system that produces a lot of heat enough to evaporate the water in your aquarium.
Can I leave my aquarium light on 24 7?
To conclude, it is not recommended that you leave your aquarium light on all the time. Tank lighting should be left on for approximately 8 to 10 hours and no more than 12 hours per day. Leaving your tank light on 24/7 will result in the overgrowth of algae and possibly increase the stress levels of the fish.
How do you know if a check valve is bad?
Symptoms of a Failing Check Valve
What is inside a check valve?
Diaphragm check valves consist of a rubber diaphragm that flexes open when the inlet pressure is increased.
Normally, these types of valves have a free-floating self-centering diaphragm, which makes them normally open (NO).
What does a check valve look like?
These valves often look like small cylinders attached to the pump head on the inlet and outlet lines.
Many similar pump-like mechanisms for moving volumes of fluids around use check valves such as ball check valves.