End-of-line flushing for greywater dripper fields

The GreyFlow™ flush valve is fitted at the end of a dripper-field line to assist with periodic flushing and sediment clearing.

Simple, reliable and easy to install, the valve helps improve the long-term performance of the dripper system by opening the line under pump pressure and allowing flush water to discharge into a suitable soak hole.

Helps keep dripper fields operating cleanly

• Manual valve operation for direct flushing control.
• High-flow flushing when the valve is open.
• Suitable for a range of watering systems, including sprinklers, drip, greywater and wastewater systems.
• Helps improve the lifespan of the dripper system by reducing sediment build-up, blockages and uneven drip patterns.
• Simple, reliable and easy to operate and install.
• Includes a 2-year manufacturer’s warranty.

Core product details

Installation and field-positioning notes

• Flush with only clean or filtered water, with minimum 40 mesh filtration.
• Use with 25mm outlet pipe sizes.
• Ensure the system can provide at least 10 litres per minute to operate the valve.
• Position with a soak hole and suitable soak media in the base of the hole.
• Use a valve box or cover stone, such as a flagstone, for access and protection.

Example dripper-field layout

This diagram is an example of a GreyFlow™ dripper-field layout. Final field layout, valve position and soak-hole detail should be checked against the system design and site conditions.

GreyFlow™ product guidance

WCTNZ® supplies GreyFlow™ greywater products in New Zealand with local product knowledge, documentation support and practical guidance for system selection and site fit.