The Philmac Universal Transition Coupling UTC 21-27mm x 25mm is a straight plastic coupling designed to be corrosion resistant, with a maximum working pressure of 11-30 bar. It is compatible with Plasson brand fittings and is suitable for use with the Philmac 1033 UTC model. The couplings feature a matt finish and come with an adapter included in the set. This unit is perfect for industrial plumbing and fixtures, and is capable of handling water temperatures up to 104 °F (40 °C).