Adapter fittings for plastic drums

[Simko]

I am ready to plumb in my drums for the water table and bought what I though I needed to make it work, but it appears that I may have gotten some bad info from the interwebs.

The plastic drums have two bungs on them. One is a coarse thread which I have found is called a 2" buttress thread, and from what I read, the other is supposed to be a 2" NPT (taper). The problem is that I believe that it is actually a 2" NPS (straight).

If I try to install a 2" NPT PVC fitting, it only threads in about two turns before getting really tight where the plug that came with the drum threads in 4 or 5 turns and seals on the gasket, not on the threads.

I was hoping to be able to use 2" NPT PVC fittings to hook up to the 2" fine thread bung.

What have other people done that are using drums for cutting fluid storage? Coat the PVC fitting in silicone/sealant and crank it in... or is there a proper adapter for the fine thread hole?

I did quite a bit of Google searching and didn't turn up anything. There are plenty of adapters from the 2" buttress thread to 2" PVC, but none from the 2" fine thread to 2" PVC.

[see&see]

At one time we were in the moonshine beer business and needed a bunch of drum adapters.

http://www.bayteccontainers.com/bucapad ... #gsc.tab=0

http://www.globalindustrial.com/g/mater ... -coverters

[motoguy]

I am ready to plumb in my drums for the water table and bought what I though I needed to make it work, but it appears that I may have gotten some bad info from the interwebs.

The plastic drums have two bungs on them. One is a coarse thread which I have found is called a 2" buttress thread, and from what I read, the other is supposed to be a 2" NPT (taper). The problem is that I believe that it is actually a 2" NPS (straight).

If I try to install a 2" NPT PVC fitting, it only threads in about two turns before getting really tight where the plug that came with the drum threads in 4 or 5 turns and seals on the gasket, not on the threads.

I was hoping to be able to use 2" NPT PVC fittings to hook up to the 2" fine thread bung.

What have other people done that are using drums for cutting fluid storage? Coat the PVC fitting in silicone/sealant and crank it in... or is there a proper adapter for the fine thread hole?

I did quite a bit of Google searching and didn't turn up anything. There are plenty of adapters from the 2" buttress thread to 2" PVC, but none from the 2" fine thread to 2" PVC.

I had this same issue a couple of years ago when building my water bladder. You are correct, they are NOT self-sealing pipe threads. I ended up getting some toilet washers to place between the plastic fitting and the barrel. 2 years later, none are leaking. Here's my setup, about 1/2 way down the page:

http://www.plasmaspider.com/viewtopic.php?t=21850

As I was experiencing the problem, and the fix:

http://www.pirate4x4.com/forum/shop-too ... -seal.html

[lockeyone]

Here is mine. Seems I got everything I needed at out local Menards store. Fittings felt a little loose but an extra wrap of teflon tape seemed to work. Only wisdom I can add is don't forget to vent. The two holes at the top was after my first test and had burping/bubbling going as liquid was trying to drain to barrel. Next time I'll plumb a proper vent. 4x4 table and I only needed one barrel. Fill time is about 5 minutes tops, drain is 2 minutes.

[Simko]

At one time we were in the moonshine beer business and needed a bunch of drum adapters.

http://www.globalindustrial.com/g/mater ... -coverters

These are perfect! I don't know why my searching didn't pull them up. Thanks!

Thanks everyone else for the ideas also!

[Simko]

At one time we were in the moonshine beer business and needed a bunch of drum adapters.

http://www.globalindustrial.com/g/mater ... -coverters

I put four fittings in the shopping cart - $22, almost ready to check out and then I see the cheapest shipping option is $25 . It seems little outrageous, but they are the only company that has drum adapters to 2" NPT.

I'm going to keep searching, but I will most likely have to pay the crazy shipping charges.

[see&see]

That is outrageous.. I don't remember them being that high.. If you can find any sku of mfg numbers they probably are for sale somewhere at much less shipping charge.. If you have any numbers of what you need post them here and we'll give it a go...

At one time we were in the moonshine beer business and needed a bunch of drum adapters.

http://www.globalindustrial.com/g/mater ... -coverters

I put four fittings in the shopping cart - $22, almost ready to check out and then I see the cheapest shipping option is $25 . It seems little outrageous, but they are the only company that has drum adapters to 2" NPT.

I'm going to keep searching, but I will most likely have to pay the crazy shipping charges.

[Simko]

I did some measuring of the bung holes (lol) and I am 99.44% sure that the coarse one is an S64x5 thread and other one is what they call a BCS G2 x 11.5 thread.

These are the two that I am looking at:


http://www.globalindustrial.com/p/mater ... ipe-thread


http://www.globalindustrial.com/p/mater ... n20b20n027

Not sure about the first one... part of the description shows that it is NPT and another part shows that it is BSP I was going to hope that it was NPT. LOL

I did quite a bit of searching of different part names and Mfg part numbers but didn't turn up anything. I was going to start looking at bulkhead fittings and say forget messing with these bung holes.

[tnbndr]

$22, almost ready to check out and then I see the cheapest shipping option is $25

My theory on crap like this is: How much time am I going to waste trying to beat the shipping. It's a simple solution to your problem. The cheapest route is probably USPS Large flat rate which is $17.85 so you are really only trying to save $8! You'll make that in no time when you are up and cutting.
Good Luck!!! JMHO

[Simko]

$22, almost ready to check out and then I see the cheapest shipping option is $25

My theory on crap like this is: How much time am I going to waste trying to beat the shipping. It's a simple solution to your problem. The cheapest route is probably USPS Large flat rate which is $17.85 so you are really only trying to save $8! You'll make that in no time when you are up and cutting.
Good Luck!!! JMHO

You are right and I will probably end up buying them and paying the shipping. In a world of Amazon Prime with free 2-day shipping it hits hard when you have to pay $25 for 10-13 day shipping.

I just can't believe that there isn't some other vendor selling these items. I would have though that adapters for a standard US plastic drum to NPT fittings would have been more common.

[acourtjester]

this may help, When I have identified something I want to buy and have a model number or part description I go to eBay some time the shipping is better of I find other vendors.
http://www.ebay.com/itm/2-Female-Npt-Pi ... Swh2xX-iFi

[see&see]

Good point courtjester. Another one is Zoro, ships everything for free over $50 and they are the wholesale arm of Grainger with all the same products, prices are 20 to 30% cheaper. Also, Zoro sends out 20 to 30% coupons all the time so prices can be as much as 50% under retail.

This one at Amazon is $15 and free ship..

https://www.amazon.com/Banjo-TA283-Poly ... e+Buttress

[Simko]

I ended up slightly modifying my plan and I was able to find the fittings I needed at US Plastic. I plumbed it in pretty much like I found in a post here by ltbald1. I have it filled full with water right now and I'm going to let it sit overnight to make sure there aren't any leaks. Looks good so far after a few hours.

IMG_3162.JPG