Powerflex Supply carries Philmac fittings made for the outside control diameter pipe. There are 2 types of HDPE pipe. Inside control diameter (ASTM D2239) and outside control diameter (ASTM D-3035) - we only supply Outside Control Diameter HDPE Pipe. 

• 1-1/2" x 3/4" Reducing Coupling IPS-OD
• Rated to 230psi: 3G compression fittings are pressure rated to 230 psi to meet the needs of the high-pressure systems.
• 50 Year Design Life: Built to withstand the toughest conditions to ensure longevity and durability, 3G compression fittings have a 50 year design life.
• High Performance: Made from advanced thermoplastic materials: 3G ID Series compression fittings are manufactured from lightweight high-performance thermoplastic materials that resist corrosion, therefore significantly minimizing maintenance, repairs, and long-term costs.
• Materials are non-toxic and taint-free and also offer outstanding impact, UV, and chemical resistance.