Q. "Do the vent pipe screens need to be glued in to the vent pipes?"
A. These vent pipe screens are designed to fit inside vent pipes snugly without gluing them, since they do not need to hold pressure. Some of these grates are made of HDPE and are unable to be solvent welded because the different plastic compositions are not compatible. We do offer PVC, ABS and CPVC glue for those who may have other fittings that need to be glued.
Q. "Can PVC and ABS be solvent welded together?"
A. No, unfortunately, they cannot. Solvent welding occurs when a liquid solvent is applied to both surfaces of two separate layers of plastic to be joined together. The solvent softens the plastic and allows the glue to penetrate into both layers so the two layers actually become one solid piece. Since PVC and ABS both have different plastic compositions, there is not a solvent made to combine or bond these two separate plastics together as one solid piece.
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