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Checking for D.C. Air leaks.

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Forum topic by leftcoaster posted 03-16-2017 05:44 PM 263 views 0 times favorited 4 replies Add to Favorites Watch
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leftcoaster

190 posts in 716 days


03-16-2017 05:44 PM

I have a new laguna c|flux 1.5 for one machine at a time. I’ve plumber ABS 4” pipe on the ceiling with blast gates. The D.C. Is connected with a 10’ flex hose so I can pull it out for maintenance. It’s a lot of hose for normal use and drops straight off the D.C. Before doing a 170 degree turn back up to the ceiling.

The abs goes immediately into a wye. All other turns are long 45s.longest distance to a blast gate is 25 feet. Shortest is 10 feet.

CFM feels weak though I am getting most of it.

Are there easy tests for leaks at the friction fit points? I have not used tape or caulk.

Is that flex hose bend at the start a giant problem? Should I shorten the hose and add a quick disconnect for maintenance? Other suggestions? I’d rather not jump to the 6” pipe everywhere right away please.


4 replies so far

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Redoak49

2906 posts in 1828 days


#1 posted 03-16-2017 05:52 PM

IMHO…...the long flex hose and sharp turn are not good for performance. Making a gentle curve and the least flex hose should be a goal.

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TungOil

748 posts in 335 days


#2 posted 03-16-2017 05:54 PM

I suggest minimizing the amount of flex you have as a start.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

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ClayandNancy

519 posts in 2855 days


#3 posted 03-16-2017 06:16 PM

Rule of thumb should be a straight 5-6 feet from collector to first bend.

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Fred Hargis

4766 posts in 2333 days


#4 posted 03-16-2017 07:46 PM

I suspect your duct work is the biggest drawback, but I check for leaks with a smoke stick (a cigar, in my case) and watch carefully. I suppose you could use a feather or something else as well. Just hold whatever it is next to the seams and watch the flow of air. The cigar isn’t the best probably, but i had one on hand. Did take a while to air the shop out.

-- Our village hasn't lost it's idiot, he was elected to congress.

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