Taylor-Wharton Auto Fill Laser Pak User Manual
Page 8
8
Fill and Vent to Atmosphere Circuits
Filling a vessel with liquid from the bulk tank occurs by pressure transfer. The pressure in a vessel is reduced
by venting gas from the top of the vessel to the atmosphere through the vent solenoid valve (V-3). A muffler
connected to the vent valve outlet keeps noise to a comfortable level. Liquid flows from the bulk tank,
through the liquid withdrawal line, and into the system through the bulk tank connection (CN-1). Liquid
flows through the fill check valve (CV-3) and into the vessel.
Note that filling occurs anytime the pressure in a vessel is less than that of the bulk tank.
Figure 3: Fill and vent to atmosphere circuit for vessel A highlighted in blue.
(Frame and wiring omitted from view for clarity.)
Muffler
CV-3A
CN-1
V-3A