These fittings are designed to work by simply pushing in the compatible tubing, providing an easy way to connect and disconnect your various lines. The tubing that is meant to be used is EVA Barrier double-walled tubing.

Inside each fitting are dual EPDM o-rings that provide superior sealing capacity due to having twice the sealing surface area when compared to other push in fittings. This makes Duotight fittings even more reliable and significantly reduces the chance of a leak.