PLASSON irrigation fittings join blue, lilac and green-stripe poly pipe into watering systems that last. The range is UV-stabilised and corrosion-free: captive O-ring compression fittings for metric pipe, a rural range for ag pipe, and quick coupling valves for simple flow control. The captive O-ring seals the instant the fitting goes on the pipe, which saves time and water on install.
Compression fittings for irrigation
Metric compression fittings up to 63 mm join blue-stripe potable pipe and lilac-stripe recycled-water pipe. The captive O-ring and longer body hold a leak-free seal in tough conditions and in both hot and cold climates.
Rural range
The rural range is engineered for green-stripe ag pipe. Red barbed ends let the rural joiners connect both metric and imperial pipe, and they go on without tools.
Quick Coupling Valve
The QCV controls pressurised water with a simple key – no power, no software. Plug the key in and water flows; pull it out and flow stops. A lilac-cap QCV connects to recycled and grey-water systems supplied through purple pipe, for safe garden watering off a recycled supply.
Choosing the right pipe
Check the pipe size before extending a system. Residential systems generally use 25 mm; rural properties usually need a larger diameter because water travels further. The stripe tells you what the pipe carries – blue potable, lilac recycled, green rainwater and agriculture, and so on. Pipe with thicker walls and a higher UV rating lasts longer, which is worth the investment in the Australian climate.
Maintenance
Pools of water or dry patches usually mean a fitting needs attention. Blockages are common after the wet season, when ants or sediment build up in the pipes; flushing the system every couple of weeks through the wet keeps the pipes clear. Installed to manufacturer guidelines, PLASSON fittings are designed to last over 50 years, and quality poly systems can run to 100 years when installed and maintained correctly.
FAQ
What size poly pipe do I need for irrigation?
Residential systems generally use 25 mm. Rural properties usually need a larger diameter because water has further to travel.
Can PLASSON fittings be used with recycled water?
Yes. Metric compression fittings join lilac-stripe recycled pipe, and a lilac-cap QCV connects to recycled and grey-water supplies.
How do I join green-stripe ag pipe?
With the rural range. Red barbed ends connect both metric and imperial pipe, without tools.
How long do irrigation fittings last?
PLASSON fittings are designed to last over 50 years to manufacturer guidelines, and quality poly systems can reach 100 years when installed and maintained correctly.
Why is my irrigation leaking or patchy?
Often a fitting needs attention, or a blockage from ants or sediment after the wet. Flushing the system fortnightly through the wet keeps pipes clear.

