Drain Saddle for RO/DI

[rsarvis]

I bought a RO/DI filter (Compact Reefkeeper from Airwaterice.com) recently. It turns out the drain saddle is too small for my kitchen's drain pipe. I went to Home Depot but the guy there said they didn't sell anything like that. Where can I get a larger drain saddle? I emailed the people at the website but haven't heard back yet.

 

Thanks.

[dandy7200]

Strange, it should be a 1 1/4" saddle and every kitchen sink I have ever put pliars on has a 1 1/4" drain. If it came down to it what I would do is drill and tap the drain whatever size it is and screw a JG fitting on there and you have a nice clean looking drain for your RO.

[rsarvis]

Hmm, I will go home and re-check tonight. I know the drain saddle is too small for the piping where I was wanting to install it (what seemed like the natural place to install it), but maybe up closer to the sink the piping is normal sized.

 

In case I rig it your recommended way, what's a JG fitting?

 

Thanks for your reply.

 

Strange, it should be a 1 1/4" saddle and every kitchen sink I have ever put pliars on has a 1 1/4" drain. If it came down to it what I would do is drill and tap the drain whatever size it is and screw a JG fitting on there and you have a nice clean looking drain for your RO.

[Rascal]

JG fitting = "John Guest" fitting. It's a quick-connect style fitting for tubing. You can usually find a wide selection next to the PVC aisle at HD.

 

Assuming your drain pipe is PVC, if you want to spare the expense of buying a tap (a device for carving in threads), you can also do this: Buy a JG fitting with 1/4" MPT (male pipe thread) on one end and 1/4" tubing connection on the other. Drill a hole in the drain pipe with a 1/2 " drill bit. Put some PVC glue around the threads and screw it in. You can also use 1/8" MPT with a 3/8" drill bit. I experimented with this method on my diy ca reactor recently and it works like a charm. It's a good idea to blow into the fitting right after you install it to make sure you don't have any excess glue blocking the drain.

Edited March 8, 2007 by Rascal

[quazi]

JG Fitting: John Guest "Speedfit" fitting http://www.johnguest.com/

 

They are the push and fit type fitting used in virtually all RO/DI filters.\

 

[dandy7200]

JG fitting = "John Guest" fitting. It's a quick-connect style fitting for tubing. You can usually find a wide selection next to the PVC aisle at HD.

 

Assuming your drain pipe is PVC, if you want to spare the expense of buying a tap (a device for carving in threads), you can also do this: Buy a JG fitting with 1/4" MPT (male pipe thread) on one end and 1/4" tubing connection on the other. Drill a hole in the drain pipe with a 1/2 " drill bit. Put some PVC glue around the threads and screw it in. You can also use 1/8" MPT with a 3/8" drill bit. I experimented with this method on my diy ca reactor recently and it works like a charm. It's a good idea to blow into the fitting right after you install it to make sure you don't have any excess glue blocking the drain.

 

Sometimes you just can't find the fitting you want. I have 1/4" - 1 1/2" NTP pipe taps and they paid for themselves many times over.

 

If you do go for the drill and glue with no tapping I suggest Locktite 2 Superglue. This has a primer and CA super glue and is the only thing I have found that adheres to poly fittings. A bead of caulk around that just to be certain wouldn't hurt. Although this glue is about $6 for a 2 gram tube and a 3/8" tap is only a couple bucks more and won't dry out if you forget to put the lid on it :wink:

[Caribbean Jake]

there is a store in Centreville just off Centreville Rd and Route 50 that sells only pkumbing and they have all those wierd clamps and out of the ordinary meassurements. I will check the name of the store again and get back to you.

[rsarvis]

there is a store in Centreville just off Centreville Rd and Route 50 that sells only pkumbing and they have all those wierd clamps and out of the ordinary meassurements. I will check the name of the store again and get back to you.

 

Thanks, that would be great. I'd prefer to do the easiest thing possible, but if necessary, I'll try one of the above fixes. Thanks for all the replies, everyone.

[rsarvis]

JG fitting = "John Guest" fitting. It's a quick-connect style fitting for tubing. You can usually find a wide selection next to the PVC aisle at HD.

 

Assuming your drain pipe is PVC, if you want to spare the expense of buying a tap (a device for carving in threads), you can also do this: Buy a JG fitting with 1/4" MPT (male pipe thread) on one end and 1/4" tubing connection on the other. Drill a hole in the drain pipe with a 1/2 " drill bit. Put some PVC glue around the threads and screw it in. You can also use 1/8" MPT with a 3/8" drill bit. I experimented with this method on my diy ca reactor recently and it works like a charm. It's a good idea to blow into the fitting right after you install it to make sure you don't have any excess glue blocking the drain.

 

I did this last night, using the 1/8" MPT b/c I don't have a 1/2" drill bit. Cheap to do (barely used any of the pvc cement I bought for $3) and really easy. Thanks for the advice!

[dandy7200]

I did this last night, using the 1/8" MPT b/c I don't have a 1/2" drill bit. Cheap to do (barely used any of the pvc cement I bought for $3) and really easy. Thanks for the advice!

 

Just watch it close. I've glued poly with everything out there, using pvc cement the first time you bump it, you are going to break the glue bond and it will leak.

[rsarvis]

Thanks. That's good to know. I also applied some silicon gel, hopefully that will help, too?

 

Just watch it close. I've glued poly with everything out there, using pvc cement the first time you bump it, you are going to break the glue bond and it will leak.

[dandy7200]

Thanks. That's good to know. I also applied some silicon gel, hopefully that will help, too?

 

It wont hurt. Do yourself a favor though and once it all dries give it a good bump with a box of dish soap. This will happen eventually so it is best to give it a run through while you still have the tools on the kitchen counter