Non-Return Valve 3"

These virtually resistance-free non-return valves are ideal if you do not want water to flow back. The pump encounters very little counter-pressure because the valves have no spring that presses the valve disc against the valve seat. As a result, the pumping losses are negligible. Can be mounted Horizontally.

Supplied with a coupling on both sides. They are therefore easy to disassemble and you do not need an extra 3-part coupling.