Springless Non-Return Valves

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.

Non-return valve 32mm Product code: 90021
€39.95
Non-Return Valve 50mm Product code: 90022
€54.50
Non-Return Valve 63 mm Product code: 90023
€62.50
Non-Return Valve 90mm Product code: 90024
€174.49
Non-Return Valve 110 mm Product code: 90025
€189.50
Non-return Valve 1" Product code: 90021-INCH
€39.95
Non-Return Valve 1.5" Product code: 90022-INCH
€54.50
Non-Return Valve 2" Product code: 90023-INCH
€62.50
Non-Return Valve 3" Product code: 90024-INCH
€174.49
Non-Return Valve 4" Product code: 90025-INCH
€189.50

The models can be supplied in both metric and inches units. The 32 (1”), 50 (1½”), 63 (2”) and 90 (3”) mm models are all supplied with a coupling on both sides. They are therefore easy to disassemble and you do not need an extra 3-part coupling. The 110 (4”) mm version can be bonded directly, without couplings.

The internal passages are:

32mm / 1" valve - 27mm
50mm / 1½" valve - 42mm
63mm / 2" valve - 54mm
90mm / 3" valve - 75mm
110mm / 4" valve - 102mm