Prevent reverse flow and make pump connections serviceable
A check valve controls the direction of flow so water is less able to return through the pipe when the pump stops. Aquascape’s union-style assemblies also make it easier to disconnect suitable pump installations. Choose the assembly for the pump outlet, pipework and available space inside the skimmer or vault.
Can it be fitted to any pond pump?
Only if the connection sizes, threads and operating arrangement match. Use the named pump and plumbing compatibility rather than selecting by appearance.
Choose the complete connection arrangement
Identify both sides of the valve, including any reversible fittings, conversion parts or extensions. A two-inch-to-three-inch conversion kit is not the same purchase as a complete valve assembly. Check the dimensions against the space needed to lift the pump out.
Keep the valve reachable
Install it in the direction and orientation shown by its instructions. Debris or wear can affect the internal flap, so access for inspection matters. Do not depend on a check valve alone to guarantee the water level or prevent every possible drain-back event.
Will a check valve reduce flow?
Every plumbing component adds some resistance. Include the valve in the overall pump and pipe design rather than assuming the maximum pump flow will still reach the waterfall.
