Description
Product recirculation from pump discharge to seal chamber through a flow control orifice and seal chamber back to suction through another flow control orifice.
Features
- Ensures product recirculation as well as venting.
- Reduces seal chamber pressure.
Use
- Used in vertical pumps.
- Used in light hydrocarbon services.
Caution
- Check for pressure margin between discharge to seal chamber pressure and seal chamber to suction pressure.
