Hello there,
Currently, we have BB-5 type centrifugal pump handling LPG with ~21 Kg/cm2 at suction end. For priming the pump after any maintenance, 3/4" pipe is connected to pump casing at top in one end and kept in Open to atmosphere at other end ~3m away from pump base. It is kept in open, only for confirming that liquid LPG is filled up inside the pump casing and whenever, the pump priming is carried out, it creates a safety hazard since the LPG is getting vented locally. Connecting the priming line to flare header would be safer but how can we ensure pump is primed with Liquid LPG? Any view glass can be installed as per standard? Please suggest.