That's what I'm wondering?
How many cfm needed for residential blowouts?
grass disaster
41 - 51 of 51 Posts
I was a licensed backflow tester at one point which is what really opened my eyes to all the variations and lack of codes or enforcements. My primary job took up too much of my time so I got out of testing. And actually most of blowouts too for that matter.
As a tester, once you see a violation, you're required by law and hopefully your conscience to report to the homeowner or business owner that their system isn't in compliance and must be fixed or they could have actions taken against them.
I had a couple issues with this even thought I agree with it. First, Since this was a side job thing for me, I didn't have time to keep up with getting things corrected just to be able to do the blow out in the first place. The second was seeing just how many being put in were not even close to being up to code. Really, all of those systems should be shut down, reported and fixed. That can be pretty extensive amount of work if you play it by the book. I just didn't have the time to keep up with it.
So it's pretty disturbing to see all these violations and even more concerning because there are so many companies out there large or small that that do blow outs but have no idea if what they're looking at is even Up to code. I'd take a guess and say that a lot of the time nothing ever gets identified, reported or fixed.
I was actually surprised how many time I've gone to shut off a stop/waste valve and it was leaking because it was never opened all the way. I'm sure someone was in a hurry. Anyway, what if the potable water supply loses pressure and develops a vacuum? The crap in the bottom of the hole gets siphoned into the water supply.
I make plenty of mistakes myself and I'm not saying I do anything or everything right. I'm just trying to say that there needs to be formal training for all of this.
The world of landscape irrigation is not a simple or easy one. And everybody needs to be on the same page when it comes to this stuff imo.
As a tester, once you see a violation, you're required by law and hopefully your conscience to report to the homeowner or business owner that their system isn't in compliance and must be fixed or they could have actions taken against them.
I had a couple issues with this even thought I agree with it. First, Since this was a side job thing for me, I didn't have time to keep up with getting things corrected just to be able to do the blow out in the first place. The second was seeing just how many being put in were not even close to being up to code. Really, all of those systems should be shut down, reported and fixed. That can be pretty extensive amount of work if you play it by the book. I just didn't have the time to keep up with it.
So it's pretty disturbing to see all these violations and even more concerning because there are so many companies out there large or small that that do blow outs but have no idea if what they're looking at is even Up to code. I'd take a guess and say that a lot of the time nothing ever gets identified, reported or fixed.
I was actually surprised how many time I've gone to shut off a stop/waste valve and it was leaking because it was never opened all the way. I'm sure someone was in a hurry. Anyway, what if the potable water supply loses pressure and develops a vacuum? The crap in the bottom of the hole gets siphoned into the water supply.
I make plenty of mistakes myself and I'm not saying I do anything or everything right. I'm just trying to say that there needs to be formal training for all of this.
The world of landscape irrigation is not a simple or easy one. And everybody needs to be on the same page when it comes to this stuff imo.
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24,084 Posts
You play the backflow game, you better get to know your CCCS with the purveyor, take him to lunch. Some have stringent rules and enforce them.
Others could give a rat, those are the one's I quit testing for, that's all I could do.
Others could give a rat, those are the one's I quit testing for, that's all I could do.
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3,800 Posts
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24,084 Posts
I love these threads where the OP answers their own question. :nod:
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3,800 Posts
picked up a gardner denver today for $1500.
has a 4 cylinder gas 125cfm.
want to fix lights, couple leaks, battery, hubs, just clean it up a bit.
I think it will serve me well.....how did I do?
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has a 4 cylinder gas 125cfm.
want to fix lights, couple leaks, battery, hubs, just clean it up a bit.
I think it will serve me well.....how did I do?
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201 Posts
I have 1200 into my 79/81 IR 100cfm, nice score.
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3,800 Posts
nice. Some decent deals for these older units.
I thought the big 185's everyone rents is overkill.
I thought the big 185's everyone rents is overkill.
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201 Posts
I can pop 2-3 zones with 100 no problem.
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24,084 Posts
We used to rent a 185 for our larger sites. Once we learned how to do the "sequence", the 125 worked perfect!
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3,800 Posts
how do you do a sequence? i've been doing 1 zone @ a time.
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24,084 Posts
By "sequence", I mean drain the main first through the lowest zone, then work up. We NEVER blew two zones at once, because during blowout, here's your chance to do a walkthrough, checking operation: air and water never lie! I would never take on a large system without throwing a pigtail in for our trusty Rain Master remote. :clapping:
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