Non-Return Valve - 20mm (3/4")

In-line non-return (check) valves prevent backflow in irrigation pipework, protecting the main water supply from contamination and preventing pump damage from reverse-spin when power is interrupted. Available in a full range of sizes from 15mm to 50mm for installation at pump outlets, fertigation injection points and sub-main branch points where flow reversal could cause system damage or health hazard.