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Check Valves

Check Valves

A check valve is used to ensure airflow or waterflow only travels one way. A check valve on a submersible pond pump or sump pump prevents water from flowing back through the pump if power is lost or the pump turns off. This will prevent unwanted drainage especially important in pondless waterfalls or multi-tiered fountains where waterfall catchment basins hold large quantities of water. The check valve spring or flap door will shut and seal if ever the pump turns off. In airlines and aeration systems a check valve protects the air compressor by ensure that no water flows into the electrical componants of the pump if the air pressure stops. Check valves should also be used at the junction between diffusers and airline in aeration systems to prevent water from entering the airline of the pump stops.

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Aquascape 99320 Plumbing Assembly 1-1/2" for Pond Water Feature Waterfall and Garden
Aquascape® Plumbing Assembly 1-1/2" Plumbing 99320 Plumbing Assembly 1-1/2" Connects pump to..
$37.88
Aquascape AQSC Pro Check Valve Pondless Vault, 2-Inch
For use with the following filters: Pondless Waterfall Vault w/Extension, Large Snorkel Vault. For u..
$81.77
Aquascape AQSC Pro Check Valve Skimmer Pondless Vault, 2-Inch
For use with the following filters: Signature Series Skimmer or for the Micro Pondless Vault and Sno..
$71.99
Atlantic Water Gardens Check Valve Assembly, Water Feature Component for Back Flow, 3-Inch
Atlantic’s AWGCV30 allows you to prevent backflow in any pump with a 3-inch outlet for waterfalls, p..
$109.57
Atlantic Water Gardens Universal Check Valve, 1.5-Feet to 2-Feet for Water Features
Atlantic’s award winning Triton Check Valve is the only check valve designed exclusively for the wat..
$45.09 $44.99
Control Devices CR Series Brass Pressure Relief Valve, 0-100 psi Adjustable Pressure Range, 1/4" Male NPT
This Control Devices CR25-100 pressure relief valve has a brass body, an adjustable relief pressure,..
$13.85 $13.82
Control Devices ST Series Brass ASME Safety Valve, 150 psi Set Pressure, 1/4" Male NPT
This Control Devices ST25-1A150 ASME safety valve has a brass body, a 150 psi relief pressure, a 1/4..
$6.55 $5.38
Drainage Industries 2260/150DRS Sump Pump Check Valve
Designed for in line use. Made of durable ABS thermoplastic, full flow design with flexible rubber f..
$12.29
Little Giant SCV114 1-1/4-Inch Plastic Sump Pump Check Valve
Little Giant SCV114 Check Valve (14942901)No matter what division of Little Giant, we have always be..
$23.99
NDA Prinsco Inc. Full-Flow Design Sump Pump Check Valve
1 1 2" Male threads on inlet side, outlet will accept 1 1 2" flexible discharge hose or 1 1 4" or 1 ..
$5.99
SHURflo 340-001 In-Line Check Valve
In-Line Check Valve Allows flow in one direction only to safeguard against backsurge up to 100 PSI (..
$14.29
Spears S1520-20 PVC Utility Swing Check Valve, 2-Inch, White
The PVC white utility swing check valve is engineered for maximum flow, quick response and positive ..
$29.00
Superior Pump 99555 Plastic Universal Check Valve Kit for 1-1/4-Inch & 1-1/2-Inch MPT & FPT
Check valves are mechanical valves that permit liquids to flow in only one direction, preventing pro..
$7.99 $7.86
Swing Check Valve - 1/2 inch FPT x 1/2 inch FPT
Tired of frequently replacing your water pump's valves? Do you find it hard to pump or replace water..
$24.50
True Union Swing Check Valve - 1 inch FPT x 1 inch FPT
With the True Union Swing Check Valve from www. petstore. com, it is now possible for you to clean y..
$29.95
True Union Swing Check Valve - 3/4 inch FPT x 3/4 inch FPT
When you own an aquarium, you probably feel like a plumber. How? Because a modern aquarium has many ..
$27.95
Valterra 200-15W PVC Swing (No Spring) Check Valve, White, 1-1/2" Slip
This Valterra 200-15W check valve is made of white schedule 40 (standard wall) PVC for corrosion res..
$12.48
Zoeller 30-0181 PVC Plastic Check Valve, 1-1/2 Inch
When you have residential or commercial wastewater issues, you can count on Zoeller Pumps to deliver..
$19.79 $17.60

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