non-return valve RS 4.5, DN 50
vertical or horizontal installation
with rising ball seal
material:
body polypropylene
RS 4 non-return valves give a practical solution to back-flow in "problem" installations. The rising-ball mechanism prevents water flowing back into baths or showers.
Type RS 4 non-return valves are used to prevent back-flow in pipework, but should not be regarded as anti-flooding valves conforming to DIN 1997. These non-return valves are not permitted to be installed instead of anti-flooding valves below flood level.
with two cleaning eyes