I have an in ground pool. The bottom of the pool has ten pop up sprayers to clean the pool. I am replacing the distributor portion of the pop up cleaning system. It has a label in the middle of ther clear top, Master. I was able to find the exact replacement.The device directs the pressurized water to each of the five pairs of pop ups in the pool. The distibutor is made of a dense material and does not appear to be pvc, maybe fiberglass. It is gray in color. I intend to attach 1-1/2" schedule 40 white pvc to the unknown distributor material. I want to know which type of adhesive or glue i need to use for a strong bond. The device operates at around 25psi. The existing device leaks from the joint where the pvc joins the device material. I do not want to have the same leaking situation when I am finished. The devicve is also located after my pool heater. So occasionally the water will be hot. Any suggestions?