The Iplex Plasson Compression 2510 Series Black Coupling is designed to use with Greenline, Redline, Rural Black, Blackline PN16 and Alkathene 20 mm and 25 mm diameter pipes. It ensures superior joint security when working with OD polyethylene pipes and forms leakproof seal without distorting the pipe. High-grade polypropylene co-polymer construction gives more strength and withstands the effect of impacts and chemicals.This easy to use fitting makes it easy to install with push-fit mechanism and forms a watertight joint. BSP threads facilitate connection with other pipe materials by both male and female couplings. Coupler facilitates connection of the pipe of size 20 to 110 mm. Coupling with a nominal size of 50 mm has a female compression connection. It has a pressure rating of 16 bar.