Solvent Welding Helpful Hints

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We are all aware that a properly cemented joint is a most critical part of the installation of plastic pipe and fittings. And no matter how many times we join pipe and fittings, it’s very easy to overlook something. So, we just want to remind you of a few things you may already know.

1. Have you reviewed all of the instructions on the cement container label or in ASTM D-2855?
2. Are you using the proper cement for the job – for the type and size of pipe and correct fittings being joined?
3. Do you need to take special precautions because of unusual weather conditions?
4. Do you have sufficient manpower? Do you need more help to maintain proper alignment and to bottom pipe in fitting?
5. Do you have the proper tools, applicators and sufficient quantities of Weld-On® cements and primer and is cement in good condition?

Please Note: The adding of primers, cleaners or other thinners to thin the viscosity of solvent cement is not recommended.
6. Remember, primer is NOT to be used on ABS pipe or fittings.
7. Be sure to use a large enough applicator to quickly spread cement generously on pipe and fittings. Then assemble immediately.
8. Avoid puddling excess primer and cement inside the fitting socket, especially on thin wall, bell-end PVC pipe.
9. Do NOT allow primer or cement to run through a valve-socket into the valve body. The solvents can cause damage to interior valve components and cause valve malfunction.
10. Be aware at all times of good safety practices. Solvent cements for pipe and fittings are flammable, so there should be no smoking or other sources of heat, spark or flame in working or storage areas. Be sure to work only in a well ventilated space and avoid unnecessary skin contact with all solvents. More detailed safety information is available from us.
11. Take advantage of our free literature on joining techniques. We offer DVDs/CDs on joining PVC/CPVC pipe and fittings, and individual bulletins.