I found, bought, and installed a barbed connector that will connect two lengths of EB 3/8" tubing (the larger tubing) because I needed to lengthen my run of tubing. Having had a drip system for years, I found it very useful to have connectors to be able to patch tubing that gets damaged. I've attached a photo of my patched tubing. It works for tubing that's .25ID (what the AWS large tubing is). It's available fromhttp://www.usplastic.com/catalog/variant.asp?catalog%5Fname=USPlastic&category%5Fname=6915&product%5Fid=8946&variant%5Fid=64322
I also installed a 1/4" threaded
shut off valve on the 1/8" line to the sensor. You thread it onto the 1/8" tubing -- it's listed in the catalog as being usable with 1/8" tubing. I am trying to avoid having to create a Rube Goldberg with lengths of both 1/4" and 1/8" tubing to the AWS sensor. This eliminates having to get 1/4" to 1/8" reducing couplers and small lengths of "regular" 1/4" tubing to use barbed 1/4" shut offs, as has been done by EBers on the forum.http://www.usplastic.com/catalog/variant.asp?catalog%5Fname=USPlastic&category%5Fname=6915&product%5Fid=8946&variant%5Fid=64322
From another site, I ordered a threaded 1/4" shutoff valve that the catalog says can be threaded onto 1/8" tubing. This could hopefully eliminate having to get 1/4" to 1/8" reducing couplers and small lengths of "regular" 1/4" tubing to use barbed 1/4" shut offs, as has been done by EBers on the forum. I ordered some of these from Dripworksusa.com
Threaded shut offhttp://www.dripworksusa.com/store/mfit14.php
14VFVT - 1/4in Threaded VariFlow Valve - the description reads "The threaded valve also works in 1/8" tubing . . ."
These solutions work with the AWS standard tubing. No need to buy 1/2" or 1/4" tubing and reducing fittings.
Two key things when installing these threaded shutoff valves on the 1/8" tubing:
1. First put the connector on the tubing segment attached to the main line. Like with all tubing, place the end of the 1/8" tubing in boiling water for about 30 seconds. Then with strong pressure start screwing the connector into the tubing. If it doesn't "take" immediately, put tubing again into the boiling water and repeat and keep screwing until the edge of the tubing is on fully. Then remove the AWS sensor from the fill tube (turn off the water!), put the tubing end in the boiling water, etc. Screwing in the connector will be a little more challenging, because you will essential be flipping the AWS sensor with the screwing motion.
I've got it down really well now - having done 5 of them. Five more to go.
This was (of course) learning the hard way. The first one I did, I put the connector on the AWS end first. It was then much more challenging to connect the valve (already attached to sensor) to the tubing attached to the main line.
2. When the valve is in the open position (arrow pointed in the direction of the tubing) you should push down on the knob slightly -- you'll hear the click. This locks it open and prevents leaking. Unlike the 1/4" DIG shutoff I have, which only turns 90 degrees, this shut off can turn indefinitely. So the pressing/clicking action in the open position (probably also closed position) is necessary -- at least on some of the valves -- if there is a leak. Three of mine didn't require the click, two did.
I heartily recommend these for a much neater installation, and, for someone who doesn't already have 1/4" tubing, no need to purchase a big roll of 1/4" tubing for just a few inches.