Something looks wrong in this photo of a PSV installation:
www.pipingdesign.com/imag es/psv.jpg
Any comments?
The block Valve on the outlet of the PSV is unusual because you ordinariy want no shutoffs in the outlet piping unless there is some other way of preventing overpressure.... see B3.31.3 and Section VIII Div 1 UG-124=5 (c), UG-126-128 etc etc.
The block Valve on the outlet of the PSV is unusual because you ordinariy want no shutoffs in the outlet piping unless there is some other way of preventing overpressure.... see B3.31.3 and Section VIII Div 1 UG-124=5 (c), UG-126-128 etc etc.