3/8 polyethylene tube to kitchen drain
#1
Member
Thread Starter
3/8 polyethylene tube to kitchen drain
I have a condensate pump collecting droplets that I want to connect to the kitchen plumbing p trap.
Is there anything to connect a 3/8 tube under the sink? I've seen dishwasher T s but they are 1/2"
Is there anything to connect a 3/8 tube under the sink? I've seen dishwasher T s but they are 1/2"
#2
Group Moderator
You will probably need to use the dishwasher adapter and possibly an air gap. You may need to buy a short piece of 1/2" tubing then find an adapter to go from 1/2" to 3/8".
#3
I would use a reverse osmosis drain clamp. The inlet is 3/8" tube.
The clamps are available to fit 1-1/2" slip tube pipes or 1-1/2" ABS/PVC.

I have never seen these at any hardware store, I would call someplace like culligan or other water filtering company and see if they can sell you one.
The clamps are available to fit 1-1/2" slip tube pipes or 1-1/2" ABS/PVC.

I have never seen these at any hardware store, I would call someplace like culligan or other water filtering company and see if they can sell you one.
#4
Member
Thread Starter
Don't seem to be many adapters like this. Could I just heat the tube and fit onto a 1.5 x 1.5 x 0.5 T under sink?
#6
If you can drill a hole in the pipe and tap it, you can use an elbow like this:
John Guest 3/8 in. x 3/8 in. Polypropylene 90-Degree Push-to-Connect Male Fixed Elbow (10-Pack)-PP481223W - The Home Depot
This fitting is available in the straight version also.
John Guest 3/8 in. x 3/8 in. Polypropylene 90-Degree Push-to-Connect Male Fixed Elbow (10-Pack)-PP481223W - The Home Depot
This fitting is available in the straight version also.
#7
Member
Thread Starter
To seal it off to make sure no sink water comes down, can I just use silicone or do you mean wrap ptfe and dope around the thread?
#8
The 3/8" tubing will probably slip tightly over a 1/8" pipe nipple. ½" rubber auto vacuum hose will probably slip tightly over a 3/8" galvanized pipe nipple. Connect the two pipe nipples together with a reducer coupling and you have an adapter to your ½" sink dish washer connection. Guessing a bit on size so take a piece of ½" and 3/8" hose/tubing to the hardware store and test before buying. Use worm gear hose clamps when connecting.
#9
can I just use silicone or do you mean wrap ptfe and dope around the thread?
You can trust the push in connector end, trim the tube back with a square cut and insert the tube into the fitting full depth.