Non-Return Valve - 20mm (3/4") type_filtration 85 46 53 2

85 46 53 2

Specifications

the NODE is operated by one or two 9V batteries

"value": "Reverse-flow" } ]

Automat AQ air release valves automatically vent trapped air from irrigation mains at system start-up and admit air during system shutdown to prevent vacuum lock and pipe collapse

Non-Return Valve - 20mm (3/4") type_filtration 85 46 53 2In 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.