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Check Valves

PVC check valves and flap valves for pool pipework – PN16 valves with EPDM seals in sizes from d16 to d110, valves with a Teflon or steel spring, transparent versions with a clear cover, and check valves with a strainer. In-stock items ship within 48 hours, and we deliver across the EU. What a check valve is for A check valve lets water through in one direction only. Behind the pump, it prevents water from draining back after switching off and the pump from running dry; for equipment above the pool water level, it helps keep the suction line primed. It also protects the heater, heat pump or solar heating from backflow, and is fitted at chemical dosing points so that the concentrate does not return into the pipework. How to choose Choose the size according to your pipework. The PN16 pressure rating withstands higher pressure than PN10. A spring-loaded valve works in any position, even vertically; a transparent cover lets you check whether the flap has been jammed by debris without dismantling the valve. A check valve with a strainer is fitted at the end of a suction line drawing water from a tank or well, and catches coarse debris at the same time. What to watch out for Every check valve puts up resistance to the water, and the spring needs a certain pressure to open – with a weak pump it can reduce flow. The arrow on the valve body shows the flow direction; a valve fitted the wrong way round will not let water through. You will find more valves in the Shutoff Valves category. Who this category is for Installers and pool owners whose pump drains after switching off or who are fitting heating and dosing. Behind the shop is IDOL SPAS s.r.o., a Czech hot tub manufacturer with its own service team. For service companies and resellers we offer a wholesale programme with individual pricing.

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PVC check valves and flap valves for pool pipework – PN16 valves with EPDM seals in sizes from d16 to d110, valves with a Teflon or steel spring, transparent versions with a clear cover, and check valves with a strainer. In-stock items ship within 48 hours, and we deliver across the EU. What a check valve is for A check valve lets water through in one direction only. Behind the pump, it prevents water from draining back after switching off and the pump from running dry; for equipment above the pool water level, it helps keep the suction line primed. It also protects the heater, heat pump or solar heating from backflow, and is fitted at chemical dosing points so that the concentrate does not return into the pipework. How to choose Choose the size according to your pipework. The PN16 pressure rating withstands higher pressure than PN10. A spring-loaded valve works in any position, even vertically; a transparent cover lets you check whether the flap has been jammed by debris without dismantling the valve. A check valve with a strainer is fitted at the end of a suction line drawing water from a tank or well, and catches coarse debris at the same time. What to watch out for Every check valve puts up resistance to the water, and the spring needs a certain pressure to open – with a weak pump it can reduce flow. The arrow on the valve body shows the flow direction; a valve fitted the wrong way round will not let water through. You will find more valves in the Shutoff Valves category. Who this category is for Installers and pool owners whose pump drains after switching off or who are fitting heating and dosing. Behind the shop is IDOL SPAS s.r.o., a Czech hot tub manufacturer with its own service team. For service companies and resellers we offer a wholesale programme with individual pricing.