【Strong Sealing & No Leakage】: Our PEX-a manifold are made of PPSU material, which enables good sealing effects even after long-term use, avoids leakage caused by aging, wear and tear, etc【High Impact Strength】: The PEX-a manifold has good impact strength even at low temperatures, which is perfect for winter needs【Long Service Life】: The applicable durability allows it to last long for decades of service life in various applications 【Environmentally Friendly & Safe】: Our PEX-a fittings are fully comply with US environmental standards and are widely applied for residentail water supply systems【Multi-purpose】: Topaipe Manifold Expansion Fitting can be used in a variety of applications, such as water supply, heating and cooling systems