Precise Irrigation Unit 6 Williams Court Tunnel Way, Pitstone , Beds , LU7 9GJ United Kingdom About Solutions products Companies Precise Irrigation Products Precise Irrigation - 4mm Barbed Fittings Precise Irrigation - 4mm Barbed Fittings 0 Share A Selection of barbed insertion fittings for use with 13mm i/d, 16mm o/d drip pipe. If the water supply pressure is high (greater than 1.5B) then it is recommended that a retaining clip is fitted. Most popular related searches irrigator drip irrigation water irrigation drip precision irrigation irrigation water irrigation fitting drip irrigation irrigation pipe drip irrigation pipe Customer reviews No reviews were found for Precise Irrigation - 4mm Barbed Fittings. Be the first to review! Add your review Publish your review Great! review successfully added!