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Hi, sorry - didn't see this until now. I get parts from a heavy-duty ag store (pumps/irrigation) but Pedro @ Coffee Parts has this cool illustration of some of their fittings:Originally posted by simonko View PostGot a supplier of these so I can see what's available? Building a machine and thinking of predominantly using PTFE.
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Building a two group plumbed lever machine so I will be selling the rotary pump (separate to BZ) when I have one group pouring well. Could easily be 6 months away though as much as I'd love to work on it at the moment.
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Cheers. I think that sounds like a reasonable option.Originally posted by simonko View PostThe gauge I got the machine off had it mounted behind a single perspex window in the stainless steel panelling catering for it and the boiler pressure gauge. It wasn't pretty enough to consider mounting on the BZ, so I just have it on the table behind the machine as it has about a half a metre of piggie tailing.
I'll be also be either reverting this BZ back to pump and selling it (so don't want to dodgy it), or disassembling it for certain parts in the near future anyway.
Do you plan on reusing the rotary pump, or will that be up for sale also?
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The gauge I got the machine off had it mounted behind a single perspex window in the stainless steel panelling catering for it and the boiler pressure gauge. It wasn't pretty enough to consider mounting on the BZ, so I just have it on the table behind the machine as it has about a half a metre of piggie tailing.Originally posted by MrJack View PostCheers. Looks like quite a lot of rearrangement has gone on there!
Do you have any pics of how you mounted the gauge itself? Not all that keen to start cutting up the panels of my BZ!
I'll be also be either reverting this BZ back to pump and selling it (so don't want to dodgy it), or disassembling it for certain parts in the near future anyway.
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Cheers. Looks like quite a lot of rearrangement has gone on there!
Do you have any pics of how you mounted the gauge itself? Not all that keen to start cutting up the panels of my BZ!
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A pic won't be that helpful as I used a junction I had lying around from another machine, but I took one anyway:

It's the miniature little copper pipe you see, above the solenoid. Water in from the rotary pump via the braided hose, OPV runs off to the left horizontally, one way valve going down to the solenoid tee. I only use the one way valve as a male-to-male adapter, not to prevent backflow which won't happen anyway.Last edited by simonko; 19 August 2016, 03:38 AM.
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Got any pictures of how you fitted it?Originally posted by simonko View PostI slapped a dry pressure gauge on my BZ99s too - more because I didn't have a cap for a unused junction outlet, but it's been handy. Gives me 4 barg when idle, so either it and/or my 350 kPa regulator are/is slightly out. About 10 barg when extracting.
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Got a supplier of these so I can see what's available? Building a machine and thinking of predominantly using PTFE.Originally posted by sprezzatura View PostThis is the primary hydraulic line in a C.M.A (Wega Mini-Nova EVD). 1/4" BSB single flares and a brass insert into the 6mm Nylon return tube from the OPV to a PTFE "t" to the inlet to the pump (sort of a self-prime idea I guess).
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I slapped a dry pressure gauge on my BZ99s too - more because I didn't have a cap for a unused junction outlet, but it's been handy. Gives me 4 barg when idle, so either it and/or my 350 kPa regulator are/is slightly out. About 10 barg when extracting.Originally posted by MrJack View PostLooks a bit newer than my BZ99s
I discovered yesterday that the distributor has some super cheap dry pressure gauges ($15 ea), 0-12 barg. So this project is growing in scope...
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I'll try to discover what that insert is (don't work on many prosumer machines with PTFE and Nylon until lately).
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This is the primary hydraulic line in a C.M.A (Wega Mini-Nova EVD). 1/4" BSB single flares and a brass insert into the 6mm Nylon return tube from the OPV to a PTFE "t" to the inlet to the pump (sort of a self-prime idea I guess).
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Looks a bit newer than my BZ99s
Any idea what kind of fittings those are?
Interestingly, the Serto website mentions that the nickel plated fittings are not suitible for use with potable water. They do recommend the ultra low lead brass fittings (basically the standard fittings with the lead leached out post manufacture), but sadly these are not available from the local distributor (and have a minimum order of 100). Standard fittings are made from CW617N (pickled), which is < 2.2% lead.
I discovered yesterday that the distributor has some super cheap dry pressure gauges ($15 ea), 0-12 barg. So this project is growing in scope...
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Here's a Fluid-O-Tech reciprocating pump arrangement that's hard plumbed out and 6mm Nylon return from OPV to pump inlet.
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