Tricked Dannvo LV-8

You thought of something you do (or did) that's UBER cool and you want to share!
Post Reply
User avatar
Shawn McNew
Posts: 7457
Joined: March 26th, 2011, 8:30 pm
Location: Lake Allatoona

Tricked Dannvo LV-8

Post by Shawn McNew » October 24th, 2017, 5:52 pm

Had a eureka moment a couple of days ago and just got around to bringing it to life. You know that pesky ring on the Dannco that keeps sliding around on the o-rings and stops putting out air? THROW IT AWAY. This installation can be placed anywhere in the line as long as you can get it there. You ideally want the Dannco to be the last thing the water goes through before it returns to the tank since downstream backpressure kills the venturi effect, but you can play around with different stuff. You have to have a sander, belt preferably and a saw, band preferably.

Take the outer part off and throw it in the trash. Remove o rings.
Whack it off at the base of the wide flange, maybe leaving 1/8" of the attachment part.
Sand the flange down until it's the same size as the inlet port.
Jam it in a 3/4 ID tube to hold it and whack the other end off roughly around the bottom part of the number "8" that's molded into it. (closest to the center of the Dannco)
Now all you have to do it jam it into your pump tube, drill a hole for your air tube and mount it in the tank.

Here's what I ended up with, sorry for the scorched up dirty tube, I didn't have any new stuff.
01firstcutandsanded.jpg (63.71 KiB) Viewed 227 times
02cuthere.jpg (92.11 KiB) Viewed 227 times
03before and after1.jpg
03before and after1.jpg (46.14 KiB) Viewed 227 times
04before and after.jpg
04before and after.jpg (23.62 KiB) Viewed 227 times
05mounted.jpg (83.37 KiB) Viewed 227 times
06operating.jpg (32.7 KiB) Viewed 227 times

User avatar
Mike Ward
Posts: 5326
Joined: March 30th, 2011, 8:04 am
Location: Mebane, NC / Smith Mountain Lake, VA

Re: Tricked Dannvo LV-8

Post by Mike Ward » October 24th, 2017, 9:37 pm

Nice “hack”

Kyle Bakis
Posts: 122
Joined: October 30th, 2013, 12:03 am
Location: Northern Kentucky

Re: Tricked Dannvo LV-8

Post by Kyle Bakis » October 25th, 2017, 9:22 am

I like that, will be cutting one up soon to experiment.

User avatar
Roland Zamorano
Posts: 739
Joined: February 1st, 2013, 12:00 pm

Re: Tricked Dannvo LV-8

Post by Roland Zamorano » October 28th, 2017, 11:12 am

how did you fit the air hose onto it thru the hose? never mind, I re-read it for comprehension. cool way to make it shorter.

User avatar
Randy Roy
Posts: 730
Joined: October 1st, 2011, 10:15 am
Location: Woodstock

Re: Tricked Dannvo LV-8

Post by Randy Roy » October 29th, 2017, 11:39 pm

Much simpler, good hack for sure.

I restarted my tank about a month ago...and messed around making a homemade venturi. Slid a small pipe into a short section of garden hose and squeezed two tubes through small holes in front of it. It's ugly but works well far.
Screenshot_20171029-231600_resized.jpg (76.58 KiB) Viewed 171 times
20171029_232421.jpg (248.91 KiB) Viewed 171 times

Post Reply

Return to “Tips, Tricks and Techniques”