J Luf's Stories
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.
They are both quite nice! In todays world they will both be worth more tommorow than what they cost today!
Regards from a dreary Cleveland Ohio... JCL
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.