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| Donato Azevedo... |
 Posted: Tue Sep 15, 2009 10:50 am |
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Hi everyone,
I am sizing a control valve for a BFW application and its ANSI class
came up 2500#.
My control valve sizing handbook does not present me with the standard
face-to-face dimensions for 2'' NPS valves with 2500# class.
Does anyone know the standard value for this?
Cheers! |
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| dlzc... |
| Posted: Tue Sep 15, 2009 1:09 pm |
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Dear Donato Azevedo:
On Sep 15, 1:50 pm, Donato Azevedo <donat... at (no spam) gmail.com> wrote:
[quote:575d769a80]Hi everyone,
I am sizing a control valve for a BFW application
and its ANSI class came up 2500#.
My control valve sizing handbook does not present
me with the standard face-to-face dimensions for
2'' NPS valves with 2500# class.
Does anyone know the standard value for this?
[/quote:575d769a80]
http://www.normas.com/ISA/pages/75.16.html
http://www.techstreet.com/cgi-bin/detail?product_id=1086063
David A. Smith |
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| Donato Azevedo... |
| Posted: Wed Sep 16, 2009 3:20 am |
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On Sep 15, 8:09 pm, dlzc <dl... at (no spam) cox.net> wrote:
[quote:9ccddf6ed5]Dear Donato Azevedo:
On Sep 15, 1:50 pm, Donato Azevedo <donat... at (no spam) gmail.com> wrote:
Hi everyone,
I am sizing a control valve for a BFW application
and its ANSI class came up 2500#.
My control valve sizing handbook does not present
me with the standard face-to-face dimensions for
2'' NPS valves with 2500# class.
Does anyone know the standard value for this?
http://www.normas.com/ISA/pages/75.16.htmlhttp://www.techstreet.com/cgi-bin/detail?product_id=1086063
David A. Smith
[/quote:9ccddf6ed5]
Considering this is a standardized value, I found on a Fisher catalog
the Face-to-Face dimensions for an 2 NPS ANSI CL2500RTJ as 394 mm
(15.50 in).
For a RF it is 391 mm (15.38 in);
I was told by one of the senior consultants that globe valve sizes are
strongly standardized amongst major manufacturers (that follow the
75.16 std).
Cheers,
--
Donato Azevedo |
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| dlzc... |
| Posted: Wed Sep 16, 2009 4:58 am |
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Dear Donato Azevedo:
On Sep 16, 6:20 am, Donato Azevedo <donat... at (no spam) gmail.com> wrote:
....
[quote:02023a582a]Considering this is a standardized value, I found
on a Fisher catalog the Face-to-Face dimensions
for an 2 NPS ANSI CL2500RTJ as 394 mm
(15.50 in). For a RF it is 391 mm (15.38 in);
I was told by one of the senior consultants that
globe valve sizes are strongly standardized
amongst major manufacturers (that follow the
75.16 std).
[/quote:02023a582a]
Yes, they are, since these dims are required for the advertised
performance. Which is why they are published in literature. What
surprises me, is that it was that difficult to find said dimensions in
offered products...
I hope you got compliant dimensions, and not some single
manufacturer's version of it.
David A. Smith |
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| brian whatcott... |
| Posted: Wed Sep 16, 2009 10:55 am |
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dlzc wrote:
[quote:84878f9e63]Dear Donato Azevedo:
On Sep 15, 1:50 pm, Donato Azevedo <donat... at (no spam) gmail.com> wrote:
Hi everyone,
I am sizing a control valve for a BFW application
and its ANSI class came up 2500#.
My control valve sizing handbook does not present
me with the standard face-to-face dimensions for
2'' NPS valves with 2500# class.
Does anyone know the standard value for this?
http://www.normas.com/ISA/pages/75.16.html
http://www.techstreet.com/cgi-bin/detail?product_id=1086063
David A. Smith
[/quote:84878f9e63]
You can buy the references that David listed - $35 to 45
or you can call the intended supplier for dimensions,
which is probably safer.
Brian W |
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| Donato Azevedo... |
| Posted: Mon Sep 21, 2009 3:02 am |
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On Sep 16, 1:55 pm, brian whatcott <betw... at (no spam) sbcglobal.net> wrote:
[quote:f0e495baa9]You can buy the references that David listed - $35 to 45
or you can call the intended supplier for dimensions,
which is probably safer.
Brian W
[/quote:f0e495baa9]
I called a local representative for Hiter control valves and confirmed
the values I found on the masoneilan catalog.
However, I will propose to my manager purchasing the standards. After
all, it is the de facto source for reference.
Cheers!
--
Donato Azevedo
Control BEng. |
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