Pipe Dreams

June 26th, 2016

My Joint Ventures are Faring Poorly

Unbelievably, I had to re-re-redo the PVC pipes on my pool pump. I’m starting to think PVC is cursed.

I fixed it last month, and then I waited for the pump shed to dry out. I figured I could continue cleaning and improving once the water was gone. I went out there a couple of days ago to check on things, and the floor was still wet.

Worse, the accumulation of dirt and leaves covering the floor was still wet.

Here in South Florida, all pool guys are English-deaf. You can’t tell them anything. And if you do, it doesn’t matter, because they won’t do it, or they will be replaced in three weeks by new people who didn’t get el memo. I figured the persistent water problem was caused by the pool guy’s continuing failure to tighten the pump lid down, and by my continuing failure to check it whenever he left the property.

Yesterday I took a closer look, and water was dripping from my new pipe system. Incredible.

The crud on the floor was there because all landscape guys in this area are English-deaf. They are also unable to use rakes. They use leaf blowers for everything. You can’t tell them not to use leaf blowers, and the blowers blow dirt and leaves into every opening available. Over the years, it adds up.

I got a shovel, a hoe, and a shop-vac, and I removed a tremendous amount of dirt and plant matter. I actually saw the concrete floor; it’s not just a myth. It’s really there.

Before I got into this mess, I hated slip joints. A slip joint is a place where a pipe slides into a fitting. It has no threads. You have to cement it together, and after that, you can’t take it apart. I hated them because I thought they were a copout, and because they turn repairable systems into replaceable systems. If you have one bad fitting in a big conglomeration of parts that are cemented together, there is a good chance you’ll have to throw everything out and start over. I liked threaded joints, which can be taken apart.

I now think slip joints rock, and I hate threaded joints.

When I examined my pipes, I found that the cemented joints were fine, and at least two threaded joints were leaking, giving me a threaded-joint failure rate of about 67%.

I had to get out the sawzall (which I don’t capitalize because it’s not a Milwaukee) and cut the pipes off the pump.

I got on the web and looked around, trying to find out what I should do. Are threaded joints just plain bad? Were my joints too tight? Were they too loose? Should I have used tape instead of dope?

Here is what I found out: dope is better than tape (yay), and doped joints have to be tightened as hard as humanly possible.

My leaking joints were very tight, but they leaked anyway. I didn’t tighten them as much as I could have, because I was afraid the fittings would split. Now my feeling is, tighten away, and if the fittings split, get new fittings. Buy extra fittings before you build your joints just in case.

This time, I took the offending structure out of the pump shed and put it in my bench vise. I tightened the joints way, way, way down, and I reinstalled everything. I had to replace one threaded joint, so I used a 24″ pipe wrench to tighten it. I used a ton of dope. I was not going to tolerate a too-dry fit that prevented the male end from bottoming, and I was not going to put up with water leaks caused by gaps in the dope.

Is this the correct way to do it? I do not know. I know that the common sense way didn’t work, so now I’m using the brute-force moron approach, and so far, I have no leaks.

I used a huge amount of cement on the new slip joints. Cement melts PVC, so presumably, if you use a lot, you end up with lots of fused plastic to prevent leaks. That is my hope.

I guarantee you, there is no one within 30 miles who would have come here and done this job correctly in exchange for money. This county is the doofus capital of the universe. Even though I’ve done it wrong twice, I still feel like I’m way ahead of the game. I only spent like a hundred bucks, and I didn’t have to yell at anyone or threaten to sue.

It’s a shame I can’t fix roofs. Don’t even get me started on that nightmare.

Here is my advice: if you have to do PVC plumbing, only use threaded fittings when you have a compelling reason. Tighten the crap out of everything, use dope instead of tape, and use lots of cement on slip joints. Buy a sawzall, too. It will cut any PVC joint ever made in under ten seconds.

Make sure you tighten your threaded joints as early as possible in the process to get them into their final form. See to it that you leave slip joints for last, because they can be wiggled and adjusted before you add the glue, helping you to get things aligned. If you move a threaded joint, you risk creating a leak.

Now watch the pipes start leaking, proving everything I just wrote is wrong.

I hate swimming pools. Biggest con since time shares.

9 Responses to “Pipe Dreams”

  1. Heather P. Says:

    How did things ever turn out with your rental house?

  2. Steve H. Says:

    Supposedly the power is about to be connected. The lawn is still a mess, but I would rather pay someone new than fight the contractor and keep him in my life.

  3. og Says:

    Threaded joints in any pipe, but especially PVC, have to be tightened until you feel they can’t be tightened anymore, and then do one more full turn. I wish I was making that up.

    I put tubing in the floor of my garage to warm it in the winter. It works quite well. A small heater pushes warm water through the tubing and the whole floor stays warm. You have to air-pressure test the system. Took me nine tries to get all the fittings tight enough not to leak.

  4. Steve H. Says:

    Thanks, Og. Mainly for making me feel good because I made it in less than nine tries.

  5. Steve H. Says:

    Here’s a great question. What’s the right tool for tightening PVC? Not all threaded PVC fittings have hex surfaces, and pipe wrenches tear them up. I”m wondering if I should get a strap wrench.

  6. og Says:

    A strap wrench works well, you have to get one of the ones with the rubberized coating on the strap. And thankfully, I didn’t have to tighten all the fittings nine times, I just had nine fittings that each had blasted leaks.

  7. Steve H. Says:

    It’s surprisingly hard to find a strap wrench in a local store. I bought one made by Klein Tools, and it was awful. The strap was polyurethane, which is a very slippery material. You have to wonder about the engineer who thought that up.

  8. og Says:

    I know that guy, actually, believe it or not. We did a LOT of work for them. The Klein GripIt with the rubbery coating on the strap is about the best, but it must be used absolutely bone dry or it slips. Supposedly the Rigid is the best, and you can buy a spare strap for it, unlike others which they just expect you to throw away, I guess.

  9. Steve H. Says:

    I gave the wrench to my dad. It was in the trash, and he was telling me he needed help opening jars…

    As you have probably guessed, the things I tried using it on were not always perfectly clean. Maybe if I had used acetone or something to remove all traces of oil, I would have gotten somewhere, but it would have been hard to get anything that clean without scrubbing under a faucet.

    My other complaint about Klein is that their screwdrivers seem to melt in the presence of tiny amounts of gasoline.