💧 This is a Netafim flush valve — and this is why it’s important These brown Netafim auto-flush valves are usually installed at the end of an irrigation line. They’re commonly used on drip irrigation, but can also be used on spray lines and other irrigation systems to help flush dirt and grit out of the system when the zone first turns on. They do need sufficient pressure to operate correctly. If pressure is too low, the valve may stay open — and cleaning won’t fix that. However, if a flush val