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-   -   Northern Brewer Polysulfone QD's (http://www.homebrewtalk.com/f11/northern-brewer-polysulfone-qds-131795/)

PitsPale 08-11-2009 04:57 PM

Northern Brewer Polysulfone QD's
Does anyone use a male (or female, I guess) polysulfone disconnect (as sold by NB) on a brew kettle ball-valve?

Any issues with heat from the burner?

I had a brass QD failure and am searching for a different solution.


olllllo 08-11-2009 05:02 PM

I have no issues with the heat. A little foil might be an inexpensive insurance policy.

PitsPale 08-11-2009 05:03 PM

Yeah, I was thinking a wet dishtowel or rag wrapped around it.

foil might be easier/better.

Boerderij_Kabouter 08-11-2009 05:07 PM

Stainless tri-clover fittings. That is an option to consider. I source mine from KLG stainless on Ebay.

Orangevango 08-11-2009 05:09 PM

foil man, foil.

PitsPale 08-11-2009 05:25 PM

I mean, I figure if the rubber coated handle on the ball valve is okay, the fitting, which is designed to handle hot liquid, should be too, right?

olllllo 08-11-2009 06:00 PM

Yea these are safe for hot liquids.

If you use a big burner where the flames lick up the sides, then you might get into a situation where the QDs get soft and may be damaged.

But really, if you're running that inefficiently or you are not shielding the flames from drafts, then you should wrap 'em up in foil and you deserve to have melty QDs for being so careless.

MSUConrad 08-11-2009 07:33 PM

It depends on your setup. I built a Brutus 10 (with wood instead of metal). The "channel" that is created forces heat over the rubber sleave on the ball valve, and melted that sucker right off!

I soldered up an extension tube and put my QD further away from the burner for insurance, and easy access.

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