A ball valve is an on-off or a shut-off valve. A ball valve is a quarter turn valve and is used where quick and frequent operation is essential. Conventional ball valves have relatively poo [ ... ]

  This article gives a brief introduction to the following steel types: Austenitic Duplex Ferritic Martensitic   Austenitic These are alloys containing primarily  [ ... ]

Pig Signallers Pig signaller is a device installed on a pipeline or pig trap assembly to detect movement of pig. It consists of a mechanism which detects the movement of pig. Types of pig signaller [ ... ]

Stress Critical lines Flexibility as defined in the design codes is a measure of the ability of a piping system to absorb its own expansion and that of connected equipment to ensure that the loadings [ ... ]