Actuated Valves for Steam, Natural gas, Oxygen service
Actuated Valves for Steam, Natural gas, Oxygen service
(OP)
Hi,
If someone could help me on this.
Is it recommended to use only a globe type valve for steam service (On-Off & control application) or could we use Ball valves for the same as well.
For Natural gas services is it recommended to go for Ball valves only irrespective of the line size (above 10")Could we use Fire safe Butterfly valves.
For Oxygen service is there any recommendation on the type of valve to be used.
Hope someone can help me on this.
Thanks,
Premod
If someone could help me on this.
Is it recommended to use only a globe type valve for steam service (On-Off & control application) or could we use Ball valves for the same as well.
For Natural gas services is it recommended to go for Ball valves only irrespective of the line size (above 10")Could we use Fire safe Butterfly valves.
For Oxygen service is there any recommendation on the type of valve to be used.
Hope someone can help me on this.
Thanks,
Premod





RE: Actuated Valves for Steam, Natural gas, Oxygen service
(Tyco - Vanessa and others)
We are using them succesfully for both applications.
Do not know about Oxygen!!
RE: Actuated Valves for Steam, Natural gas, Oxygen service
i. O2-Gas: valves of ductile iron/SS with rubber (i.e. NBR) seating will suffice;
ii. O2-Liquid (-297DegF): 316SS disc with teflon seating will be good.
I hope this will help in a little way.
RE: Actuated Valves for Steam, Natural gas, Oxygen service
in general terms, I think triple-offset metal seated butterfly valves, with the appropriate materials selection and devices, are suitable for all of the three applications you mention (of course, further information about service conditions is needed for a costs comparison and a definitive answer).
In any case, try visiting the Manufacturers' websites I listed in Thread408-64692 (see my reply of Aug 4, 2003).
Hope this helps, 'NGL
RE: Actuated Valves for Steam, Natural gas, Oxygen service
Ball valves dont do well for throttling service.
RE: Actuated Valves for Steam, Natural gas, Oxygen service
If you are talking about 2" to 6" pipes, then commercial flanged globe/cage valves are excellent for steam. DeZURIK makes a good pressure balanced globe/cage valve for steam up to 150 psid.
Ball valves would be OK for on/off but not modulating control, in smaller pipe sizes. The new "characterized" ball valves available in the commercial industry are not rated for steam.
Can't help you with your other media questions.
RE: Actuated Valves for Steam, Natural gas, Oxygen service
Personally, I would look at the process conditions and the desired function of the valve then make my decision.
Certain plant specific regulations my restrict the valve specifications but beyond this its down to picking the best technical and commercial solution from everything that is available.
Fog Jones
RE: Actuated Valves for Steam, Natural gas, Oxygen service
http://www.eiga.org/pdf/Info%2015%2000e-webfinal.pdf
http://www.wstf.nasa.gov/oxygen/ASTMG4/default.htm