A couple PVC tricks -- on request.

Jan 8, 2025
18
Compac 16 Pensacola, FL
1. To splice a new piece into a line, the gap must be the length of the splice plus a hair more than half the length of a coupler. One seats one end of the splice onto one open end of PVD with a coupler. A second coupler is placed either on the other end of the splice or the other open end, which either makes the splice longer than the gap or reduces the gap by a hair more than half the length of the coupler. Therefore, ordinarily, the end of one of the sections of PVC must be moved back that half-plus-hair distance, and if it's fixed or blocked the only way to do that is to bow it. Bowing takes a very long distance of displaceable pipe -- for 1.5", something like ten feet. The alternative is an existing product: a length of heavy slightly flexible rubber hose with two female connectors on its ends. That can be bowed and S-curved to slip onto the ends of the PVC. If the flexible splicer is bought before there repair, the PVC can bet cut to the proper length -- the length from the outer end of one splicer to the inner end of the other. If the gap pre-exists and is longer than the splicer, the distance can be closed by splicing in a short nub of PVC to either open piece to bring the gap down to proper length.

2. If it is needed to splice two pieces of PVC together and one does not have a coupler this can be done: Carefully heat the end of one piece with a torch, avoiding burning it, and it will become soft. Then it can be wedged-forced over the other piece. Heat far enough back so that there is an inch-and-a-half of overlap. Then separate and use primer and cement as you would in a conventional splice.

3. PVC and CPVC have different dimensions and cannot be joined. CPVC is for hot liquids. It is tan in color whereas PVC is white. Same primers and cements work on both.

4. There is a range of cements to use. All purpose, wet-dry, clear. As long as my work isn't going to be visible I use the blue. If it will be visible, I am very careful applying the runny gets-everywhere purple primer and the blue (or yellow or orange or whatever).

Okay, that empties my clip. Ya'll chime in with your other PVC tricks.
 
Jan 8, 2025
18
Compac 16 Pensacola, FL
no need to separate and glue. Crimp the two soft pieces together
I don't understand. The method I described results in only one soft piece, On a sailboat a method other than gluing may be sufficient because pressures aren't high, but in a water service system with psi's commonly 40ish and sometimes above 60, glue would be at least prudent.
 
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LloydB

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Jan 15, 2006
904
Macgregor 22 Silverton
Urban, your post arrived without reference to the need for your solution so you should probably repost to the original thread.