Selection of pipeline valves for ethylene oxide
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I would like to ask everyone: which type of valve is generally used for pipes carrying ethylene oxide – gate valves, globe valves, or ball valves? Or can any of them be used? Some sources state that ball valves cannot be used; I’d like to know the reason. Thank you! !
I don’t think so; I’ve been using stainless steel ball valves for several years now. Where did you find such a requirement?
The literature is probably referring to carbon steel valves, right? Any stainless steel valve should work, I guess
The principle for selecting valves for ethylene oxide pipelines depends on the size of the pipeline. For smaller pipelines, typically those with a diameter of 2 inches or less, gate valves or ball valves should be used. When ball valves are chosen, their valve cores need to have special openings. For larger pipelines, only gate valves can be used
Hello, may I ask if gate valves can be used for ethylene oxide pipelines? I’ve looked up a lot of information; most documents suggest the use of ball valves, but the construction workers say that ball valves shouldn’t be used and that plug valves are preferable. There’s no unified standard, and I’m really worried
The valve selection is based on the properties of ethylene oxide as a medium: it is flammable and explosive, toxic and carcinogenic, and prone to polymerization. Therefore, good sealing of the valve stem is required, ideally at ISO 15848-1 Class A standard； It is required that the valve mechanism have no cavities to resolve the polymerization issue. The double-eccentric C-type ball valve is highly suitable for this application.
Yes, different sources say almost the same thing; I don’t know which one to believe.
Is the problem solved now? I also checked the literature; some sources mention ball valves, while others say that ball valves are not suitable and that gate valves should be used instead.
Are the ball valves you use ordinary ball valves? Is it still the type with a vent?