Compression End Cap for PE Irrigation Pipe

A compression end cap closes the open end of a polyethylene irrigation pipe. This fitting has one blue compression nut and a closed black body, providing a compact termination for a supply run or an unused branch. Select the cap for the pipe size at the closing point rather than the diameter of an upstream main line.

Keep the termination accessible

Place the capped end where it can be checked after the zone is pressurized. If you expect to extend the run later, leave enough sound pipe for a future connection. Flush loose debris out of the pipe before closing it, and isolate the supply before loosening or removing the cap for maintenance.

Match the pipe before assembly

Compression fitting sizes refer to the pipe connection diameter. Check the actual outside diameter, pipe material and wall specification rather than relying on an inside-diameter measurement. The selected option must match every connected pipe. Confirm the permitted pressure and temperature for your complete system before installation; the weakest component determines the usable operating limit.

Prepare and test the connection

Turn off the water and release pressure before working on the line. Cut the pipe square, remove loose debris and check the end for scratches or distortion. Follow the fitting assembly instructions for insertion depth, any required pipe support and tightening. Keep the sealing surfaces clean and avoid forcing a misaligned pipe into the socket. Bring the zone up to pressure gradually, inspect every connection and resolve any leakage before covering the pipe.

Choose the right fitting shape

Check the route and number of outlets as well as the size. Leave the joint accessible during the initial test and provide space for later inspection. A correctly selected fitting should suit the planned layout without twisting the pipe or putting unnecessary strain on the connection.