This fitting is made for 16mm Dripline tubing that has a 14mm internal diameter. The fitting does not come with a washer and may leak with some connections. Washers are available 15mm Washer - HNTW15 20mm Washer - HNTW20 The DB range of purpose designed quality acetal fittings provides high retention in low pressure poly tubing for long-term reliability of connections. The DB range can be confidently installed without clamps when matched to quality low pressure poly tubing with corresponding dimensions (refer to the tubing manufacturer for confirmation of suitability or test under field conditions).
