This flexible coupling meets the standards for ASTM Certified, has a length of 3 inch, a maximum operating pressure of 4.3 psi and is designed for the following applications: non-potable water. It is black, has an operating temperature of 140 Degrees F and is made of PVC. In addition, it is a flexible coupling.,This flexible coupling meets the standards for ASTM Certified, has a length of 3 inch, a maximum