Name this fitting

angelotrivelli

I've got an AGA gas cooktop that has a slight gas leak. Using a flammable gas detector, I isolated the source to one fitting.

The fitting looks like some type of flared fitting. It had a stiff washer in it too. Before I try tightening it up again, I would like to know more about it. This is a British-made cooktop.

I am not sure exactly how the washer that was in it is supposed to function. It does not seem supple enough to form a seal, so maybe it sits on the back of the upper nut (not shown) to prevent galling as the nut is tightened?

Here's a pic…

BTW, here's the washer. It's not 100% obvious to me what role it has.

PC7060

Looks like a typical union fitting. The mating female that captures the flare is the part you described as off camera. Your guess on purpose of the washer sounds reasonable.

Edit: thanks for update pictures on gasket. Per @hot_rod - that gasket seals the union.

angelotrivelli

Thanks! That helps me a lot!

I notice there's some discoloration on the part that seals. I wonder if that's some kind of contamination. These types of couplings are supposed to be strictly metal-on-metal, right?

I am tempted to try cleaning it off. Perhaps removing the corrosion on the outside upper pipe with steel wool, and using isopropyl on the mating surface.

PC7060

If mating surface has a lot of dirt or corrosion, ’d use fine grade 0000 steel wool to clean up the surface.

hot_rod

probably uses a green or blue fiber washer. The washer should always be replaced when you open the connection.

It should not need any pipe dope if both surfaces are clean

EdTheHeaterMan

Name this fitting

OK I will play. Since it is on a British made cook top… I will call that fitting Kipper! From the cartoon

I just looks like a Kipper to me. Let ms know what other names you get!

mattmia2

Looks like half of a union and a flare adapter for a flexible gas connector

DCContrarian

https://forum.heatinghelp.com/discussion/comment/1815444#Comment_1815444

I'm going with either Nigel or Ivor.

angelotrivelli

https://forum.heatinghelp.com/discussion/comment/1815434#Comment_1815434

Yes, that's exactly right. It's a fiber washer. I added a pic in my post of it.