Owner's manual

TW-407 Rev.-
11
Pressure Building Circuit


building outlet valve (V-6) and pressure building inlet valve (V-7) permits the circuit to function. When
the pressure inside the vessel drops below the pressure builder setting, the pressure building regulator
(PCV-1) opens. This creates a path from the liquid in the bottom of the container to the gas space in

from the bottom to the top of the vessel. Liquid is expanded to a vapor and pressure is increased in
the vessel.
Figure 4: Pressure building circuit highlighted
PBC1
PCV1
S1
CN6
V7
SV3
Pressure Building Circuit