Valves
Valves
(OP)
I am trying to get opinions on what would be best practice for a chilled water line. The company I work for says that a valve of 2 1/2" should be a butterfly valve. I have learned recently that a ball valve would be less expensive to purchase.
What are the rest of you doing in this circumstance? Do you go with cost only or is there something else I am missing(hence the reason to use a butterfly valve for this app) Thanks.
What are the rest of you doing in this circumstance? Do you go with cost only or is there something else I am missing(hence the reason to use a butterfly valve for this app) Thanks.





RE: Valves
RE: Valves
What's the purpose of the valve? Isolation? Control? What sort of close-off pressure rating?
Lots of choices besides simply ball or butterfly...
Give us some more info.
Good on ya,
Goober Dave
RE: Valves
RE: Valves
As others have said we need more details.
Roy
RE: Valves
That being said, a butterfly valve with a one-piece stem and disc would pose little restriction (Keystone 9-series)
Small ball valves can be very inexpensive and may be threaded onto the pipe instead of needing an accompanying flange pair supplied and welded to the pipe. So a quality 3-piece ball valve (such as Worcester 44 series) would have a significantly lower total cost of installation. Even then, 2" threaded ball valves are on every shelf, and 3" threaded valves are rare because if for no other reason it's hard to find a guy strong enough to work the business end of a stillson wrench that big.
RE: Valves
I would not recommend a butterfly valve to isolate a line that is then being cut off and capped. Ball or gate.
Patricia Lougheed
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