The OPV outlet on the Gaggia Classics goes back into the water reservoir using a silicone or nylon hose from memory. These are possibly supposed to be the same. (And to your earlier comment about stainless bolts in an alloy boiler….. tell me about it!!!)
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Budget project - KitchenAid / Dual Boiler Gaggia
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My adventures have found the following:
The OPV discharges down a cast tube towards the water tank, about 1/2 inside this tube is feature which looks more like a gun sight and there is no OPV hose.
The OD of the OPV is ~12mm, the tube ~15mm and the middle of the gunsight is 8mm.
This results in the water from the OPV hitting the gun sight and running down the sides of the tube.
The water then collecting/dripping on the surface above the water tank and if the machine is not completely level results in water running across this surface and dripping out from underneath.
It is relatively easy to fix, I'll remove the gunsight and add a discharge tube (ordered from ebay) (Photos to follow).
On a positive note: I'm really happy with the coffee even at 14bar
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From post 14.1above......
EA said - "Do yourself a favour swap out the phillips / pk for a straight slot head screw!
better long term."
Mr Min replied - "When you say better, can you explain why?"
Apols didnt see your response earlier.
Well first off there's nothing wrong with the brand new screw youve installed. These same are used on Rancilio, Bezzera and many more. Except....
Old school posts from yonks ago including my own experience with a Bezzera is that.....
over time that nice new Phillips (?) head screw will gunk its way in, old grounds will burn themself into the cross head slot And make it most difficult to remove.
A deep straight slot screw head is much easier to clean out, given it will do the same, and the flat blade of the screwdriver will then give a more positive bight to assist in breaking any tension built up.
Oh and dont fall into the.....
tighten it till it nearly snaps the head orf then back it off a smidgeon rule of thumb some whose mothers do have 'em !
Just firm then up an 1/8 turn!
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