Flapper Valve Non - Return 1" (inc split unions) The pond water may appear

The pond water may appear slightly milky

Gives rapid breakdown of food and fish waste

The New Thermotec Inverter Pro Horizontal range of pool heat pumps really do offer the best in terms of efficiency

Environmental Function Control (EFC by OASE) protects against dry running and blocking

at the touch of a button

Flapper Valve Non - Return 1" (inc split unions) The pond water may appearDouble Union Flapper Non Return Valve Very Reliable Double Union Flapper Non Return Valve, this Double Union Flapper Non Valve has minimum resistance also with the advantage of waste particules that can be removed by unscrewing the double union fittings. The Double Union Flapper Non Return Valve provides a simple means of preventing backflow in pipe work where this would be undesirable i. e in pumped systems or where Elecro heaters are fitted in line.