This adaptor adds a micro-irrigation take-off at a 15mm riser connection. Its female BSP end screws onto a male-threaded riser, and its male BSP end accepts the female-threaded sprinkler or fitting above it.
The 4mm barbed side outlet allows a small tube to branch from that water supply. Push compatible tubing onto the barb to feed a micro-irrigation layout. The side outlet receives water whenever the riser is pressurised.
Both main connections are 15mm (1/2") BSP. The side take-off is barbed, rather than a threaded connection for screwing in a micro fitting.
Match the BSP thread size and connection type before fitting. Start the threads by hand and avoid overtightening the plastic fitting. Check that connected tubing and micro-irrigation components suit the system pressure and flow.
For mounting a 4mm threaded micro spray directly onto a 15mm riser, use the micro shrubhead adaptor. That adaptor holds the spray itself; this take-off adaptor provides a barbed outlet for tubing.