Coupling for connecting two pipes with the same diameter in a straight run ，Socket openings on both ends for connecting two pipes. They are non-toxic, lightweight and easy to install. Installation requires the use of primer and solvent cement。Can be used as a handmade DIY sheif. PVC for corrosion resistance, high strength, and less weight than fittings made from metal，Smooth interior finish for reduced friction and material buildup. Pipe and Pressure Fittings are used in irrigation, underground sprinkler systems, swim pools, outdoor applications and cold water supply lines，Rainwater collection bucket system，Not for drinking water installation，Maximum operating temperature of 140 degrees F，For cold water system only！ Meets specifications ASTM D2466. Pipe and Pressure Fittings are used in irrigation, underground sprinkler systems, swim pools, outdoor applications and cold water supply lines，Rainwater collection bucket system，Not for drinking water installation，Maximum operating temperature of 140 degrees F，For cold water system only！