Non-return / Check Valve for Airlines
Non-Return / Check Valve for Airlines
"Back-siphoning" from your reservoir through your airstone and airline can ruin your air-pump. Stop it happening by placing your air pump above the highest sytem waterline and by fitting one of our non-return / check valves. Easy!
- Small and easy to fit
- Only allows flow of air in one direction
- Fits straight onto standard PVC or Silicon Airline Tubing
- Excellent value-for-money
- Can save your airpump from being irrepairably damaged
Non-return / Check Valve for Airlines Contains:
1 x Non-return / Check Valve for Airlines
How the Non-return / Check Valve for Airlines Works:
The non-return / Check valve for Airlines is a one-way valve which allows air to pass from the air pump through to your airstone but prevents air or reservoir water to pass back in the other direction. This is achieved with an internal mouth that opens when air is pushed in one direction but is pushed shut if air/water tries to pass in the opposite direction. In this way, the Non-return / Check valve prevents "back-siphoning" of water from your reservoir and into your air pump where it will almost certainly cause damage. The greatest risk of this is when the air pump is not running. Air pumps can be accidentally switched off and power outages do happen, so fit one in every airline for complete peace of mind.
Using the Non-return / Check Valve for Airlines Tubing:
With your air pump switched off, make a clean cut in your Airline Tubing where you want to fit the non-return / check valve. Push the end from your air pump onto the black side of the check valve. Push the end from your airstone onto the clear side of the check valve. Dipping the ends into warm water for a few moments will help soften the tubing slightly to make the job easier. Never apply too much pressure to inlets or outlets when fitting airline tubing as this may cause them to break. Ensure that the airline has been pushed on far enough to create a good air-tight seal and that the air-line won't fall off. Your air pump can now be switched back on.
If you have a multi-outlet air pump, make sure you fit a non-return / check valve into each air-line for complete protection for your air pump.
Always make sure that your air pump is on a surface which is higher than the highest waterline in your system. This will make doubly sure that back-siphoning will not occur.