Since there is already a thread dedicated to BDB ball valves, I just posted my response and some pics into it, here:
Breville Dual Boiler ball valve detail, pics

HTH

-Peter

Jake_G wrote:Nicely done, Brendan.

I found the harder duro on the Aflas rings an encouraging thing as it "feels" like you get a more positive seal with them over the gummy feeling silicone. Of course, none of that matters. What really matters is whether or not the Aflas seals are a one-and-done kind of seal replacement.

That's my hope in the GS/3 vacuum breaker valve, which only has an expected lifespan of 6-18 months with the factory silicone seals. I used Aflas and even went with twice the cross section, since it fit. Time will tell, but I anticipate the seal I put on lasting indefinitely.

Randy,
- Jake

For the record, my BDB has 2110 coffees on it, so we shall see how long the Aflas lasts.

Btw to read error codes and get a shot count, turn the power off, hold down the 1 & 2 buttons at the same time for 3-5 seconds, then press the power button on. The 12 error codes will be in the format 00,01 etc. using the arrows. Press the menu button to get the shot count x 10. Eg: my counter reads 211.

At three shots a day, seven days a week, that's a bit under two years. Definitely in the ballpark for stock silicone seal duration, based on a preponderance of reports from other users. Mine lasted close to four years, but I'm away with my job, about three days a week. Minus vacation, probably average two day a week of non-use.

Did not know about the fault codes. In eight years I'd never even heard of them. Good to know. Do you have a guide to what each one means? This is good stuff.

Also, up until summer 2018, I still had a -900. And it's shot count key combo was different. I never knew what the new one was so thanks for pointing that out, too.

-Peter

Thanks for the shot counter info!

My BDB has 3110 shots registered and shows no signs of leaks. I estimate I pulled around 200 of those shots. I have no idea if any of the seals have ever been replaced but I doubt it based on the condition of the machine when I received it. Not much maintenance done on it from all appearances.

BTW, it's a 920XL with the newer brew head collar but the older hose connections.

Might be worth replacing them prophylactically... before you have a leak. Tripping you GFCI is pretty scary, even if it's cause is hissy steam o-ring and it's fix is to replace the o-ring. It's an easy job that we should all become comfortable with.

-Peter

I'm sure this has probably been covered somewhere already but I can't seem to find it.
So my ball valve was leaking and I removed it to flip the seals. However, when I went to unscrew the Allen head portion I got about halfway done unscrewing it and it suddenly completely stripped out on me. So now I'm looking to purchase a replacement ball valve and it looks like the original part has been discontinued. Has anyone confirmed if this alternate part will work or not?

https://www.ereplacementparts.com/ball- ... 75268.html

That's it...#SP0001713

Only two in stock...grab it!!

Do NOT throw your stripped one away. They use a sticky thread sealer on some of these. A Little bit of heat from a creme brûlée torch or a gas stove and the thread locker turns into butter. Then it comes apart easily. Just grip it with pliers or anything so you don't burn yourself and once the thread sealer is hot it won't take any torque at all to turn it.

Then flip your seals and get back in business.

-Peter

That's the strange part though is that I used a torch and got it really hot and it still was really hard to turn. I also had all of the proper tools with the specific sizes required. I plan on keeping and trying to figure out something with it, but the Allen socket is gone now.

To disassemble the steam ball valve I put the body in a vice heated it with a torch and use vice grips to open it. Wasn't really that difficult actually although it does scratch up the valve quite a bit.

I used to know what the 12 error codes meant but I can't find the list right now. I'll look for it and post it if I do find it