Duotight vs John Guest

[dan46nbrew]

Has anyone had experience with both of these fittings? If so, does one have any kind of benefit or better quality than the other?

 

[Bobby_M]

I think it's too soon to make any blanket statements on duotight since they are brand new. John Guest is a long standing U.S. made brand with hundreds of thousands of units in the field. Duotight does have the dual orings so that's a theoretical benefit as long as the grip ferrule works well and nothing breaks.

 

[S-Met]

So far, I like the duo-tight fittings. I think I got them from Bobby along with bevseal ultra due to price.

Super easy to replace all of my liquid lines and no leaks on 1st try, took longer to cut and measure than to assemble. No experience with JG so can't provide a comparison. Only downside if DT is they seem limited on fittings, but no reason you can't use JG if they have the part you need.

If I redo gas lines, I might consider. Supposedly they are gas and liquid compatible.

 

[Jayjay1976]

I'm putting together my first kegging system and I want to use the 5/32 inside diameter EvaBarrier line because of its increased resistance (shorter beer lines), only trouble is I don't trust push-in fittings as much as oetiker clamps. My RO system has john guest fittings and they have never failed me but I just worry about the frequent rearranging and jostling that will occur in my keezer, I also don't know whether I can trust the internal stainless barbs to stand up to repeated use. My feeling is that although these fittings were designed for push-in simplicity, the barbs are intended for use in semi-permanent installations.

 

[kintor99]

Where are duotight fittings made and who is the importer?

 

[day_trippr]

fwiw, I am using John Guest, Duotight, and DMfit PTC connectors for beer and gas, somewhere in the neighborhood of 70 different pieces between them. While Duotight makes noises about their twin O-rings, I have not noticed a functional difference between any of these makes. And now that I have a few months of use under my belt without a single evident leak, I'm feeling pretty good about PTC fittings, and really good about the EVAbarrier tubing (love the stuff)...

Cheers!

 

[SteveH aka shetc]

Surprise, suprise
https://honyii.m.en.alibaba.com/?spm=a2706.7835515.0.0.76c373adCns71W

Where are duotight fittings made and who is the importer?

 

[Jayjay1976]

Surprise, suprise
https://honyii.m.en.alibaba.com/?spm=a2706.7835515.0.0.76c373adCns71W

How is that a surprise?

 

[gnef]

I've only used John Guest fittings, both the acetal and PP, and most recently also their lead free brass versions.

I've become a big fan of the lead free brass for the ones that they offer that work for me, specfically the 1/4" FFl to 3/8" tube for quick disconnects on the gas side. I'm not sure about using them for the beerside, but I would consider it - they are currently using the acetal versions. If I have a lot of failures in the future, I'll more seriously consider it (I have overtightened some of them and caused failures in the past). The lead free brass ones are just expensive in the numbers that I would need (I already bought 40, but would need a lot more to replace all of the necessary fittings).

 

[SteveH aka shetc]

Sarcasm

How is that a surprise?

 

[Wrinkletusk]

John Guest is a long standing U.S. made brand

I knew that didn't sound right https://en.m.wikipedia.org/wiki/John_Guest_(company)

 

[kiwipen]

I've only used John Guest fittings, both the acetal and PP, and most recently also their lead free brass versions.

I've become a big fan of the lead free brass for the ones that they offer that work for me, specfically the 1/4" FFl to 3/8" tube for quick disconnects on the gas side. I'm not sure about using them for the beerside, but I would consider it - they are currently using the acetal versions. If I have a lot of failures in the future, I'll more seriously consider it (I have overtightened some of them and caused failures in the past). The lead free brass ones are just expensive in the numbers that I would need (I already bought 40, but would need a lot more to replace all of the necessary fittings).

Brass, lead free or not is not very suitable for beer, cleaners or sanitizers. Some faucets and shanks are made from brass, but it's recommended to spend a little extra for stainless steel.

 

[Bobby_M]

I knew that didn't sound right https://en.m.wikipedia.org/wiki/John_Guest_(company)

Well, I guess John Guest USA isn't as old as the UK roots but I'd call 1986 a pretty long run compared to Kegland. I literally drove to the facility to pick up parts about 45 minutes from my shop.

 

[gnef]

Brass, lead free or not is not very suitable for beer, cleaners or sanitizers. Some faucets and shanks are made from brass, but it's recommended to spend a little extra for stainless steel.

Great point! I'll just stick with the acetal versions. It is also a lot cheaper this way! I still have some gas fittings I want to change over to the lead free brass though.