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Check Valve

Size: 50 mm

Available options

Product Code: CV-50

Category: Check Valves

Made in four sizes: 50 mm, 1.5 inch, 63 mm and 2 inch. Check valve (non-return valve), 50 mm inlet and outlet, for pool pipework. Two glued halves with a transparent body, so the gate can be seen closing and any leak-back confirmed without dismantling. Fit it on the suction line when the pump sits above the water level to keep the pump primed, on the return line to stop the filter draining back through the pump, and downstream of a chlorinator or heater to protect them from back-flow. Solvent-weld to PVC pipe with the arrow pointing in the direction of flow.

Check Valve — WaterstarCheck valve — Waterstar pool equipmentCheck Valve 50 mm — WaterstarCheck Valve 50 mm — WaterstarCheck Valve 50 mm — Waterstar

Specifications

FunctionPrevents reverse flow through the line
ConstructionTwo-part body bonded with a special cement

Volume: 0.0017 m³

Availability: Made to order

Frequently asked questions

Where should a check valve be fitted?

On the suction line when the pump sits above the water level, to keep the pump primed; on the return line to stop the filter draining back through the pump; and downstream of a chlorinator or heater to protect them from back-flow when the pump stops.

Which size do I need?

Match the pipe: CV-50 for 50 mm pipe, CV-63 for 63 mm, CV-1.5 for 1.5 inch and CV-2 for 2 inch. The two-part body is bonded with a special cement and the transparent body lets you see the gate close and confirm any leak-back without dismantling.

Does a check valve add pressure loss?

A small one — the gate opens with the flow and sits fully open at normal circulation. Install it in the flow direction marked on the body, and never on the pump discharge with a closed valve downstream.

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