Valves on the oxygen pipeline

Monel material, being a copper-nickel alloy, does not produce iron filings or electric sparks, thanks to its inherent properties. Therefore, it is used on oxygen valves, as stainless steel oxygen valves have strict requirements regarding flow velocity. Monnell’s oxygen valve can operate without considering the flow rate. I am a valve designer, so I cannot give you authoritative answers regarding pipeline issues.

New materials, special formulations – if people say it works, then there are corresponding guarantees. As for “is a bypass valve needed when using it on an oxygen pipeline?” Is installing a bypass valve a mandatory requirement? ”Yes, there are such requirements; generally, for metal oxygen valves, there are strict specifications regarding the diameter and flow rate. The main consideration is differential pressure control; the principle behind using small-diameter valves is to apply pressure behind the valve in order to reduce the differential pressure before and after it, thereby ensuring that the valve can open under conditions of minimal differential pressure. Simply put, this small valve is a pressure-charging valve. New materials come with new regulations; since they have made such a commitment, it is necessary to obtain the relevant production qualifications.

Yes, the pressure difference before and after the main valve is less than 0.3 kilograms

Oxygen applications are quite special; it is necessary to consult relevant manufacturers for specific advice

I heard that stainless steel was also used in the past, right?

Stainless steel can also be used. However, there are corresponding requirements for the flow rate. Exceeding the specified value poses safety risks.