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Need suggestions for a needle valve
allenb
BenKeith wrote:

Quote

I have not gotten into having to control the gas burner to a coffee roaster but through my years working in different types of plants, when I needed very precise metering through manual valves, I always did it with two valves in parallel. One main valve to get the flow pretty close while the other, much smaller valve is in the center of it's range. Once the main valve has it close, the much smaller valve makes it a whole lot simpler to tweak that last little precise amount you need.

That sounds like an effective way of getting precision turn-down without resorting to a 50 turn, very expensive precision metering valve. Fortunately, for burner control on a roaster, one multi-turn valve with appropriate Cv value will give one plenty of precision by itself.

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
snwcmpr
Summit Flow Control has been purchased by, or absorbed by, Instaloy.
I am awaiting some information back from them.

Generant replied to my email inquiry, and says that the PMV-1B-K is available.
I am awaiting more information from them also.

Ken in NC
--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
snwcmpr
Generant responded and said to contact Adrienne at Installoy.
Adrienne Gurrola
Inside Sales Representative | [email protected]
Mobile: 936-760-6511

Ken in NC
--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
snwcmpr
I did get a reply from Adrienne. And I think you may best to contact her directly.

It was a bit too 'Company Formal' for me. A lot of documents attached, and she will offer a quote.

And, I think I am going to go the way of the Kelly Valve and Driver board.

Ken in NC
--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
snwcmpr
Update:
I am now starting to think I want this Generant Valve, PMV-1-B-K.
I have initiated contact with Installoy again.

Ken in NC
--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
snwcmpr
Ok, I have been in contact with Installoy.
We have had discussions here about customer service.

I have had a few email exchanges, and it has been difficult to get information.
The latest example:
I asked for more specific information about the Cv (A value "Cv" is noted on the product drawing I received in the previous email response) and the reply I get later that day is a specs sheet about a Check Valve. Not even the same type of product.

Just sharing,
Ken in NC
--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
allenb
Hi Ken,

Let me know if you don't receive the information on the valve's Cv or any other info you want from them. I'd be happy to lend a hand and rattle their cage.

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
snwcmpr
I finally got a specs sheet from them about the PMV series.
The PMV referenced above is a non-standard item. The specs she sent me do not list the PMV 1 but she assured me that they are all within 90% of the specs.
After getting the specs sheet i am now able to formulate more direct questions about the item.
This is my last query.

Quote

The PMV #1 is not listed in the document you sent. You stated it is a special non cataloged item for Generant.
I don?t need to be non-standard, I don?t think.
The #2 is on the chart, so what is the difference between the 1 & 2? Maybe I do not need a 1.
You said they are 90% the same.

PMV-1T ... Not a threaded fitting?
Is a PMV-1F or PMV-2F a female NPT? That would be easier for me to install.

Brass or SS, is there much price difference? I do not see it mattering in my use.
Stainless is my choice unless the price difference is significant..

Straight, not Angle.

I am not sure what the K is for, Krytox?
I am using propane, so that may, or may not be necessary.
What is used other than that.

I would prefer Viton o-rings.

--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
snwcmpr
That was my last email query to Installoy.

Ken in NC
--------------
Backwoods Roaster
"I wish I could taste as well as I wish I could roast."

As Abraham Lincoln said "Do not trust everything you read on the internet".
 
squawmanex
Hi,

I'm new to the forum, owner of a Huky 500, but I need to help a friend with his 10kg STA Impianti.

Pipes are 1/2" and from what I've been reading you guys made good progress with the needle valve issue.

Any recommendations so far? I thought that PMV series would be to small for a such big roaster, or am I mistaken?

Max burn capacity is of 16000kCal, which would be around 63450 BTUs.

Let me know your thoughts!

Thanks!
 
allenb
Welcome to HRO!

We can help with your question but need to know what fuel they will be controlling with the needle valve. Nat gas or propane? Also, what pressure will be entering the valve?

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
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