Hard piping DE backwash line?

[sharknado17]

Hello and thank you for taking the time to read this thread.

I have grown tired of replacing the blue backwash drain hose and would like to hard pipe it to my sewer clean out. I was told by my pool cleaning company to run an 1.5" pvc pipe from the filter backwash line to the clean out. The run would be approx 150ft w/ approx 4-90s and 6-45s. Would this create too much back pressure? If so, would I be able to backwash on low speed? So confused!!!!!

 

[jblizzle]

Why so many turns? It should not be a problem for the pump to run that far although you shouldn't backwash on low speed anyways.

 

[Jimrahbe]

S,

I would use 2" pipe...

Jim R.

 

[sharknado17]

I should have been clearer inn saying I had already ran the piping as the pool company advised me. The reason for so many turns is where my sewer cleanout is located I had to go under my driveway and around a few things.

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S,

I would use 2" pipe...

Jim R.

I wish I did use 2". I also wish I would've found this site before running it.

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S,

I would use 2" pipe...

Jim R.

I should have been clearer inn saying I had already ran the piping as the pool company advised me. The reason for so many turns is where my sewer cleanout is located I had to go under my driveway and around a few things.

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Why so many turns? It should not be a problem for the pump to run that far although you shouldn't backwash on low speed anyways.

I should have been clearer inn saying I had already ran the piping as the pool company advised me. The reason for so many turns is where my sewer cleanout is located I had to go under my driveway and around a few things.

 

[chiefwej]

How about using a better hose?
Post #169
Tips and Tricks - Page 9

 

[Richard320]

The previous homeowner hardplumbed my backwash....under the lawn, past the garage, then through the wall, up and over the garage door, back down and then out to the cleanout inside a planter. I asked the ool service guy about it. He shook his head... said the water flow was excessive and flooded the planter and made a huge mess. He also said it didn't work very well -- to much backpressure. I wasn't upset when the pipe got stepped on and cracked.

There are probably regulations against discharging the water into the street. I use cellulose so it biodegrades and just flood the lawn when I backwash. Yes, the vinyl hoses suck, but I only backwash maybe twice a year. I don;t think it's worth it for me to invest in a better hose, or repair/ reroute the plumbing.

 

[teharder]

No the 90's you've mentioned would not cause near the resistance those blue backwash hoses produce. That is, provided the distance is the same and the turns are similar. I'm curious though, is there a reason you're not using 45's to soften the turn a bit? This makes quite a difference in dust collection as well. Whenever you can avoid an abrupt turn of direction you should make every effort to do so. Even if you used a long 90 it would help. Remember, that water is slamming into that turn as if it hits a wall. You could reduce the resistance significantly by using 45's spaced further apart.

Btw, I hard plumbed mine into my rainwater drainage for my house and pool deck 21 years ago. It has been wonderful. No cleanup, no debris, no hassle. The difference is that I ran about 15' of 1 1/2" PVC that met 4" drainpipe for the remaining 150'. All down hill. I hope you're not dealing with any kind of incline.

 

[domct203]

Using two 45's vs one 90 is actually a bit more resistive due the the 'steps' at the glue joints, however the difference is negligible in measured head. Proper pipe size is more important to flow than choice of fittings.