The adiabatic compression that may occur when a valve is closed or opened in an uncontrolled manner or just the presence of compressed oxygen alone can lead to a combustion reaction. This is relevant in particular to non-metallic material such as seals or lubricants. Modified Hy-Lok valves for use with compressed oxygen are available to reduce this type of risk for people and equipment. These valves have been approved by a Notified Body.
A selection of modified versions of NV Series valves with control spindle tips allow highly compressed oxygen to be shut-off and regulated in a controlled manner.
The following versions in stainless steel 316 are available for a maximum working pressure of 200 bar and a maximum medium temperature of 60 °C.
Up to 200 bar (2900 psi) at 60 °C (140 °F)
Stainless steel 316
Temperature fluctuations can necessitate adjustment of the gland packing.
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