1. Level switch.
2. Manometer.
3. Manifold.
4. Pressure switch.
5. Shut-off valve.
6. Orifice.
N1 to the mechanical seal
N2 from the mechanical seal
N3 Level switch
N4 Level switch
N5 Filling connection Bottom
N6 DrainN7 Cooling water IN
N8 Cooling water OUT Cover
N9 Connection to flare