I recently replaced my steam safety valve. It released steam intermittently, at a pretty low rate. I had occasional success reseating the original valve by forcing a larger steam release, but I decided to replace the part. I took apart the original, but couldn't see any damage on the seat. I guess I could have used a valve compound on it to regrind, but.....
I purchased a 1.6 bar 3/8? safety valve from espresso parts/Jura. I usually use WLL, but they were showing out of stock. (Jura showed in stock, but that was inaccurate as I had to wait 2 weeks for the order to ship.) It seems that the thread size is pretty standard. However, not many places carry the 1.6 bar version, most are 1.8 or 2.0 bar. I doubt it matters much given that so much of the boiler design/mfg is standard but I went with the stock pressure. On Monday, March 29, 2021 at 6:50:13 PM UTC-7 Brian wrote: > Definitely worth checking that the boiler isn’t over pressure. But a slow > consistent leak is certainly likely to be a failed safety valve. When the > safety valve goes off it tends not to be subtle. > > I purchased my brewtus IV a little over a year ago, and experienced the > same issue, I’m the third owner of this 10 year old machine, no surprise > that rubber parts would be starting to fail. There was a slow leak from the > safety valve, barely audible, but it would make cups on the warming tray > wet, and would cause the fill valve and the pump to kick On to refill the > boiler ever 10 minutes or so. > > Generally speaking I don’t recommend messing with safety valves on steam > boilers. For the price it’s better to just replace it and know that > everything is working as intended. Additionally manufacturers tend to make > them hard to service, they are often somehow sealed with a river or safety > wire once calibrated. I will say the one thing maybe worth trying is to > intentionally open the safety valve. If you feel comfortable with it, you > could try burping it a few times to see if it doesn’t reseat. You’ll need > to pull up on the little shaft sticking out of the top of the valve while > the boiler has a little pressure on it. Make sure the machine is unplugged, > and Don’t do it while the machine is at operating pressure. I’d recommend > like .2-.4 bar. Use long pliers/channel locks to pull the release, and > shield your hands with a dry towel or high temp gloves If that fixes it, > great! If not just replace it with a new one. > > Best of luck!. > On Monday, March 29, 2021 at 8:25:26 PM UTC-4 [email protected] wrote: > >> Your description sounds like the pressure stat might need to be adjusted, >> have you tried that yet? The safety valve fires when it gets above ~1.7 or >> 1.8 bar IIRC. Try adjusting down to 1.5 if it's going higher than that. >> Also, if the adjustment won't hold the pressure stat might need to be >> replaced, they can eventually fail since they are plastic and degrade over >> time. >> >> On Monday, March 29, 2021 at 8:41:23 AM UTC-7 [email protected] wrote: >> >>> Update* So I ended up swapping out the o-rings on the vacuum valve and >>> seems the small leak/hiss sound is coming from the "tall safety valve" ( >>> https://www.wholelattelove.com/products/expobar-tall-safety-valve-65000110?variant=14409383084091 >>> >>> ) its light and not leaking any water. I don't drink milk drink very often >>> but may have one here or there so I usually have this boiler off ( I love >>> this feature on the brewtus :)) Best bet would be to replace this part or >>> should I try to troubleshoot more? >>> >>> Thanks! >>> >>> On Tuesday, March 23, 2021 at 6:39:32 PM UTC-5 Roy wrote: >>> >>>> Great, thanks! >>>> >>>> On Tuesday, March 23, 2021 at 6:38:52 PM UTC-5 bmacpiper wrote: >>>> >>>>> Those are both good, plus Chris Coffee, espressoparts.com, seattle >>>>> espresso gear, etc. >>>>> b >>>>> >>>>> On Mar 23, 2021, at 16:35, Roy <[email protected]> wrote: >>>>> >>>>> oh forgot to ask, but where do you all suggest to get parts from? WLL, >>>>> 1st, etc? Thanks! >>>>> >>>>> On Tuesday, March 23, 2021 at 6:33:42 PM UTC-5 Roy wrote: >>>>> >>>>>> Oh yes, I totally hear you! And thanks for all the info, I will try >>>>>> that next. great thing about the brewtus I purchased was that the >>>>>> previous >>>>>> owner had added quite a few upgrades like the flow control and all >>>>>> exterior >>>>>> parts to walnut wood as well as some others which is nice and I'm coming >>>>>> from a Breville Barista Express. I was hoping to get into e61's but >>>>>> wasn't >>>>>> sure if I wanted to go all the way and spend almost 3k for a Bianca or >>>>>> 4k >>>>>> for decent lol But all in all im loving this brewtus. Thanks again and >>>>>> looking forward to this community for sure! >>>>>> >>>>>> On Tuesday, March 23, 2021 at 6:20:33 PM UTC-5 [email protected] >>>>>> wrote: >>>>>> >>>>>>> Lol. Hey Ben. I can't tell you how many times Ben has helped me when >>>>>>> my Brewt gave trouble! This is a great group even though a lot of us >>>>>>> have >>>>>>> moved on to different machines over the years. >>>>>>> >>>>>>> Herman >>>>>>> >>>>>>> >>>>>>> On Tue, Mar 23, 2021 at 7:17 PM 'Ben McCafferty' via Brewtus < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> Good point Herman (and hello!). >>>>>>>> If enough steam is escaping, that could drop the water level in the >>>>>>>> steam boiler and cause the pump to cycle to fill it back up. I >>>>>>>> mistyped >>>>>>>> earlier I think when I said “brew boiler” for what gets refilled. >>>>>>>> Listen to >>>>>>>> Herman, he’s smarter than me. ;) >>>>>>>> >>>>>>>> Best, >>>>>>>> b >>>>>>>> >>>>>>>> On Mar 23, 2021, at 16:14, Herman Dickens <[email protected]> >>>>>>>> wrote: >>>>>>>> >>>>>>>> As Ben said replace the o-ring. If the pump stops and you don't >>>>>>>> hear the hiss that's all you need to do. If you fix the hiss and the >>>>>>>> pump >>>>>>>> still keeps coming on you have another issue. I've had the o-ring leak >>>>>>>> cause my pump to come on like yours is doing so hopefully that will >>>>>>>> fix it. >>>>>>>> >>>>>>>> Herman >>>>>>>> >>>>>>>> >>>>>>>> On Tue, Mar 23, 2021 at 6:01 PM Roy <[email protected]> wrote: >>>>>>>> >>>>>>>>> I think it may be this.. I hear a light hiss and im thinking its >>>>>>>>> coming from that area but it also looks as if the safety valve is >>>>>>>>> leaking >>>>>>>>> (lightly) as well. But I am wondering if that is just due to the fact >>>>>>>>> of it >>>>>>>>> doing its job inadvertently because of the vacuum valve. O-ring >>>>>>>>> replacements or just switch out both valves with new ones? Any recs? >>>>>>>>> On Tuesday, March 23, 2021 at 3:07:46 PM UTC-5 [email protected] >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> May be that the check valve for the steam is leaking. If so you >>>>>>>>>> should be able to hear it. I think it's called a vacuum relief valve. >>>>>>>>>> >>>>>>>>>> Herman >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Tue, Mar 23, 2021 at 4:02 PM Roy Aguilar <[email protected]> >>>>>>>>>> wrote: >>>>>>>>>> >>>>>>>>>>> Hello all, so I recently upgraded from a bbe to a expobar >>>>>>>>>>> brewtus iv non rotary, I’ve had this thing for about a week and I’m >>>>>>>>>>> not >>>>>>>>>>> much of a milk drinker so I usually only have brew boiler on but >>>>>>>>>>> today wife >>>>>>>>>>> wanted a capp so I turned on both boilers. This is my first e61 >>>>>>>>>>> machine and >>>>>>>>>>> was wondering if vibration pump comes on intermittently every few >>>>>>>>>>> minutes >>>>>>>>>>> for a couple of seconds is normal. Or am I possibly looking at >>>>>>>>>>> something to >>>>>>>>>>> repair in the near future? 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