Applying Solvent Cement Instructions
This is the five step process for making a good solvent cement pipe joint and how long a joint needs to set before we can use it. Temperature, humidity and pipe size all effect setup and cure time. Using a joint before it is fully cured, will allow moisture into the joint which will weaken it and may lead to future failure.
1. Condition the pipe and fittings so that they are at the same ambient temperature. Cut the end of the pipe square by using a fine-toothed hand saw and miter box or power saw. Tube cutters with wheels designed for use with PVC are acceptable, provided they do not leave a raised bead on the outside diameter of the pipe. There are shears available for cutting small diameter PVC pipe also.
2. Using a chamfering tool or file put a 10 to 15 degree chamfer (bevel) on the end of the pipe.
3. Check the dry fit of the pipe and fitting. Pipe should enter the fitting about 1/3 to 3/4 depth. Position the pipe and fitting to assure alignment. Using a clean rag, wipe the pipe surface and fitting socket to remove all dirt, moisture, and grease. If wiping fails to clean the surface, a chemical cleaner must be used.
4. Using a clean natural bristle brush about 1/2 the size of the pipe diameter, freely apply the primer to the fitting socket with a scrubbing motion until the surface is penetrated. Repeated applications may be necessary. Now apply the primer to the pipe surface equal to the depth of the fitting socket in the same manner, making sure the surface is well penetrated. Again apply primer to the socket, to make sure it is still damp.
5. Using a clean natural bristle brush (not a dauber brush) 1/2 the size of the pipe diameter, flow on a heavy coat of solvent cement to the male end of the pipe. Load the brush and do not trim. The amount should be more than sufficient to fill any gap. Next apply a liberal coat of solvent cement to the inside of the socket, using straight outward strokes to keep excess cement out of the socket. While BOTH SURFACES are STILL WET with solvent cement, insert the pipe into the socket with a 1/4 turn twisting motion. A pair of strap wrenches (shown below) or a vice and strap wrench will help with the 1/4 turn on pipes larger than you can turn by hand. The pipe MUST go to the BOTTOM of the socket. The application of solvent cement to pipe and fitting, and the insertion of the pipe into the fitting, should be completed in LESS THAN ONE MINUTE. If necessary, use two people to simultaneously apply the solvent to pipe and fitting. Hold the joint together for approximately 30 seconds until both surfaces are firmly gripped. Allow proper set time before disturbing joints. After assembly, a properly made joint will usually show a bead of cement around its entire perimeter, this should be brushed off. Allow the joint to cure for an adequate time before pressure testing.
