The MDPE Straight Joiner 40mm is a compression fitting for joining 40mm MDPE pipes in a straight line. It’s a practical, cost-effective choice for plumbers, builders and maintenance teams working on domestic water, irrigation and light industrial piping projects.

Designed for reliability, the fitting carries PN10, rated up to 10 bar (approximately 1 MPa or 145 psi) at standard conditions. MDPE provides good chemical resistance and durability, making the straight joiner suitable for water supply, irrigation, and, where MDPE PN10 fittings are used, controlled gas distribution in appropriate systems. The compression connection uses an olive and nut to seal without welding, enabling straightforward hand-tightening and a secure joint when properly installed.

• Material: MDPE (medium-density polyethylene) for durability and chemical resistance
• Size: compatible with 40mm MDPE pipe
• Connection: compression type with olive and nut for a tight seal
• Pressure rating: PN10 (up to 10 bar / 1 MPa / 145 psi)
• Performance: designed to create leak-free joints when correctly assembled
• Applications: water supply, irrigation, gas distribution and some industrial piping
• Durability: resistance to weather and mechanical stress, long service life

To install, ensure pipe ends are cut square and deburred, slide the olive onto the pipe, insert fully into the joiner, and tighten the compression nut until the joint seats. After assembly, pressurise the line slowly and check for leaks. Avoid bending or stressing the joint and follow manufacturer torque guidance if provided.