Joining Techniques

GF Harvel PVC Clear pipe is easily joined by the solvent cementing process, providing a quick, strong, leak-tight seal for pressure applications. To maintain the system's clarity, GF Harvel recommends the use of a clear, medium-bodied, fast-setting cement in conjunction with a clear primer for optimum joint integrity, such as IPS Weld-on 705 Clear cement and IPS Weld-on P-70 Clear primer. As an added advantage due to the product's transparency, joint integrity is readily identified during the solvent cement joining process. Details on proper solvent cementing techniques are available and must be reviewed for proper assembly and joint integrity.

Specialty clear female threaded transition fittings, incorporating a stainless steel retaining ring, reduce problems associated with overtightening and provide a strong, leak-tight seal for plastic-to-metal transitions. When used with clear male adapters, the reinforced female adapters provide an excellent threaded connection for disassembly while maintaining system transparency. The reinforced design reduces radial stress encountered with typical threaded connections, and eliminates the need for system pressure de-rating traditionally associated with non-reinforced plastic threaded joints. GF Harvel recommends the use of Teflon® tape for making reliable threaded connections. Generally, two to three wraps of tape in the direction of the threads on the male end, followed by one to two turns beyond finger tight is all that is required to make a leak-free connection.

Note: Certain thread paste compounds may contain stress cracking agents; contact the paste manufacturer for compatibility with PVC prior to use.

Where disassembly is required, GF Harvel Clear can be easily joined in the field using standard rigid thermoplastic pipe fittings and joining techniques such as flanges, molded grooved coupling adapters and unions. Joining options are limitless when overall system clarity is not a necessity.