Fixing relief valve leaks / very good replacement OPV

[lennoncs]

The pressure relief valve on my Brewtus has been leaking constantly due to being exposed to 20psi line pressure all the time (plumbed in).

That issue is now fixed.

I wouldn't post something like this except for the side effect that this relief valve can be used as a very repeatable OPV for those who have a vibe pump and want good pressure control.

Swagelok Model# SS-RL3M4-F4 (Stainless part)


Sean

[denniskeating]

Sean,
I have been debating plumbing in my Brewtus. I would probably upgrade to a rotary pump w/motor at the same time. The over pressure relief valve would still be required in the system, correct?
Are there any other Swagelok parts needed? I would appreciate more description for my pea-brain.
Thanks, Dennis Keating

[erics]

Hi Sean -

I'm applying the Brewtus OPV to Silvia - hopefullly tomorrow when my 1/4 to 1/8 BSPP nipple arrives. Your OPV write-up on the Brewtus User's Group site was really well done and showed a nicely constructed/easily adjustable valve IMO. Hope you got the Swagelok valve at a good price.

What method did you/do you use when adjusting the OPV?

Eric S.

[AndyS]

Sean,
I have been debating plumbing in my Brewtus. I would probably upgrade to a rotary pump w/motor at the same time. The over pressure relief valve would still be required in the system, correct?

Not Sean, but the typical rotary pump setup would include (1) a pressure regulating valve to bring the city mains inlet pressure down to about 1 or 2 bar, (2) the pump's own internal bypass valve to regulate brew pressure at around 8-9 bar, and (3) an overpressure relief valve set around 12+ bar to protect the boiler from high pressure due to thermal expansion.

[lennoncs]

apologies Folks,

I have been off the planet for a while and didn't have an opportunity to respond to questions.

my typical mode is to go off the deep end with regards to reliability/performance and using Swagelok components is a big weakness of mine, I have many years of good experiences with their hardware and have never had a failure of a tube fitting.

the valve shown is ~$130.00

I consider that cost to be very cheap insurance for a hardwood floor that will be trashed if it gets a soaking from a faulty fitting or valve while we are away from home.

Andy answered the question from denniskeating quite nicely.

I adjust my systems by using an instrumented PF that has an accurate gauge and a metering valve to allow adjustment of the flow rate to match my shot flow. the vibe pump that first came with my brewtus could barely maintain 9bar at normal shot flow rate.

I now use a different type of pump now and calibrate in a completely different manner.



Sean

[AndyS]

I now use a different type of pump now and calibrate in a completely different manner.

What is not said is far more intriguing than what is....

[lennoncs]

What is not said is far more intriguing than what is....

You have 1/3 of that system in your posession now.

[denniskeating]

Thanks, Andy and Sean,
Yes, I was quoted $135.00 for that relief valve. I trust your confidence in the product, though.

What would be a good pump and motor for my Brewtus? I can externally mount it.
Thanks, Dennis

[AndyS]

Thanks, Andy and Sean,
Yes, I was quoted $135.00 for that relief valve. I trust your confidence in the product, though.

What would be a good pump and motor for my Brewtus? I can externally mount it.
Thanks, Dennis

http://groups.google.co.in/group/.../612e6b982f11bf96/

[malachi]

http://www.espressoparts.com/product/V_44
http://www.espressoparts.com/product/V_242

[lennoncs]

http://www.espressoparts.com/product/V_44
http://www.espressoparts.com/product/V_242

Insane price for a motor



try this:

Grainger Item # 3K068
Price (ea.) $77.40
Manufacturer GENERAL ELECTRIC
Mfr. Model # 5KH32FN5586X

that is a 1/3 Hp



a 1/2 hp is $122.00


Parts are cheap and plentiful for this motor when you need a start cap or switch.


Sean


P.S.
Yes, insane price for a valve also

[AndyS]

insane price for a valve

Is it available in brass instead of stainless?

[lennoncs]

yep

sky is the limit with these folks, you tell them what you want and they make it.

my valve is surgical 320ss with teflon seals



sean

[denniskeating]

Yes, Grainger will be sending me the 3K067 motor $91.45 with tax and shipping I think it is the same motor you furnished a link to Andy, except it is 1/3hp, not 1/4hp.
I also have the upgrade OPV valve coming.
Next I'll order a procon pump and a water filter for my adventure.
I appreciate the input from everyone.
Thanks, Dennis

[AndyS]

Insane price for a motor

C'mon, Sean, it's Italian. Italian motors make better espresso.

[denniskeating]

Sean,
I need help understanding how to install the new OPV and at same time hooking up new (3/8"?)direct plumb in line.
I would need to put the OP valve on a tee coming out of the boiler tee, wouldn't I? Then my incoming water line would also connect to the OP Valve tee?
I'm thinking that by not using the stock OP Valve, my adapter & water hook-up fittings will be different. I am also taking out the vibe pump, and adding external Procon w/ 1/2hp motor, and good water filters.
Also, is there concern for a strain relief or grommet where the external water line enters the machine?
Thanks, Dennis