"What about 'fast' or 'hot' PVC glues? Don't they glue faster?"
Normally the 'fast' or 'hot' PVC glues have a faster set time. Cure time for most is still about the same. "Set" time is the initial period of swelling required to give the joint enough mechanical strength to be gently handled. "Cure" time is the total time period of required swelling for the joint to acquire enough strength that it can perform it job transporting materials through it at whatever pressure and temperature required without coming apart or leaking.

"Can I use PVC pipe for compressed air or gases?"
Although some people use PVC piping for compressed air or gases, we are not aware of any fittings manufacturer that recommends it. We feel it is dangerous and absolutely do not recommend it.

"Can I glue PVC if it is wet?"
All solvent cements have the ability to absorb some water and still perform well enough to effect an adequate joint. However, research shows that the presence of just 10% water in solvent cement can slow penetration and swelling by up to 65%. This joint with water inside will always be an inferior joint and subject to problems.

"Do I really need to use primer?"
Primer is a mixture of solvents used to penetrate the pipe and fittings and start the swelling process ahead of the application of the solvent cement. It is highly recommend that you use primer.

"Can I use PVC glue on other plastics?"
We only recommend using glues manufactured for a specific plastic i.e. PVC glue only on PVC pipe.
Note: There are many plastics that cannot be glued at all; polyethylene, polypropylene, nylon, polybutylene, and other polyolefins.

"Do you recommend using teflon tape on PVC threads?"
Lasco Manufacturing says "It is wrong to add excess bulk to a threaded joint by wrapping male threads in teflon tape. It is wrong to make over-tightening easier by using teflon tape ....".

"Do I have to do anything special when I'm glueing a PVC valve?"
Before installation, make sure the valve is in the "open" position and all cemented surfaces are clean and dry. Install the valve following the established solvent procedure. A suitable support should be placed under the valve body to hold the weight of the valve. Be sure to adhere to proper curing times, and wipe off any excess cement that might have accumulated at the joint bead.

Caution:
Do not use or test these PVC fittings with any liquids not recommended by the manufacturer. Do not use these PVC fittings with compressed air or gas systems. Modification of these fittings voids any warranty.