Foam Brush Air and Liquid Settings...

[MEP001]

That's a big damn pump for foam brush.

I did read your original post and rather than just offer pressure settings, I explained that pressure is a much less important part of the equation than individual adjustments if they exist on the system. Your next reply was that you tried a different pressure and had too much product on the floor. All that's been talked about since is ways to help you get it adjusted properly.

I run 45 PSI on the liquid and 25 on the air. You'd probably go broke giving foam brush soap at 20 GPM.

 

[Randy]

If memory serves me correctly the Gould pump you’re using has a bladder tank setup. I haven’t seen one of those problematic setups in 20 or 25 years. Have you given any thoughts too changing out, upgrading the pump to a Flo-jet G57 pump?

 

[Twodose]

There is no bladder, dh/12 controller, kind of like your setup Randy with the mx8.

The pump is rated at 20gpm, thats max., I use regulators on all the LP liquid lines.

Like an air pump, it pumps only what it needs, up to 20gpm @ 43psi.

 

[Twodose]

I make my generators from 1 1/2" PVC, just long enough to fit a single conduit clamp over the pipe to secure it. I drill and tap three holes, one on the end of each cap and one on the side after the first one is glued on. One single plastic scouring pad fills it.

Whats the third hole for?

Also below is a picture of one I purchased, it is just an 1.5" coupler with 2- 1.5 x 1/2" threaded reducer bushings, But it looks like it is stuffed with copper pot scrubber.

 

[MEP001]

There are two 1/4" tubes to each bay that go directly into the foamer on separate fittings, then out the other end with a 1/2" barb.

 

[pitzerwm]

Twodose, Air and liquid in, foam out

 

[cantbreak80]

OR…

One IN
with a Tee

Or WYE

--------------------------------------------------------------------

And, One OUT
with a Connector

 

[MEP001]

I prefer air and liquid going separately into the foamer. I feel like I get more volume without the restriction of forcing it through a small fitting. I orient the foamer with one fitting at the bottom and put the air there so the liquid gets foamed up and through the rest of the generator. It doesn't take much time or effort at all to drill and tap holes in PVC.

 

[Twodose]

Didn't know that you could plumb the fittings right into the foam generator, although when you think about it, it makes sense.

Currently I am using tees like above with the air, liq, affb, (1/4") coming in, and a 3/8ths barb out, with 3/8ths hose running to the bay.

I am going to just cut the FBG in the 3/8" going to the bay.

Also, do you use drill bits designed for plastic?

Plastic can be difficult to drill without splitting or cracking it.

Do you use regular taps?

 

[MEP001]

I use a step-drill with steps every 1/16 of an inch and stop right as the 1/2" starts to dig in. I use a regular 1/4" pipe thread tap in my cordless drill - since it has a square end it fits into a 12-point socket and I can use a driver adapter. I've made hundreds of generators like that and have never split one. I used to make two dozen at a time and it would take about 30 minutes.