Common flow-control valves include needle, fine metering, quarter-turn plug, and rising plug. Needle valves provide precise flow control and, depending on design, leaktight shutoff.

It conforms to new ISO Standard 15407-2, which defines the valve interface for 18 and 26-mm valves with plug-in electrical connections. A wide range of pneumatic functions gives flexibility to users.

The plug valves comply with an ANSI 300 - 600 pressure rating to a maximum of 100 bar. As the valves will be used in a corrosive coastal conditions, the exterior of the plug was covered in a ...

Stem and plug systems in large control valves generally have lower torsional mode frequencies than do smaller valves and are, therefore, more likely to be excited by the valve flow.

Valves manufacturer AZ-Armaturen (AZ) South Africa delivered a total of 22 high-pressure plug valves to a mineral sands operation near Richards Bay, in KwaZulu-Natal, over two occasions, once in ...