Flow diagrams for standard 400 psig - 6,000 gallon,
9,000 gallon, 11,000 gallon and 13,000 gallon tanks 

• CV-1  Economizer check valve

• CV-3  Fill check valve

• LI-1  Liquid level gauge

• PBC-1 Pressure building coil

• PCV-1  Pressure building regulator

• PCV-2  Economizer regulator

• PI-1  Pressure gauge inner vessel

• VR-1  Vacuum gauge tube

• R-1A  Rupture disc

• R-1B  Rupture disc

• R-2  Outer vessel relief device

• S-I  Strainer

• SV-1A  safety valve (A.S.M.E.)

• SV-1B  safety valve (A.S.M.E.)

• SV-2  Fill relief valve

• SV-3  P. B. coil relief valve

• SV-4  Pressure building relief valve

• SV-7  Economizer relief valve

• V-1  Bottom Fill Valve

• V-2  Top Fill Valve

• V-3  Pressure building inlet valve

• V-4  Full trycock valve

• V-5  Vacuum gauge valve

• V-6  Evacuation valve

• V-7  Fill drain valve

• V-8  Vapor phase isolation valve

• V-9  Equalization valve

• V-10  Liquid phase isolation valve

• V-11  Pressure building outlet valve

• V-12  Vapor vent valve

• V-13  Vaporizer inlet valve

• V-15  Aux. pressure build inlet valve

• V-16  Aux. pressure build outlet valve

• V-17  Economizer isolation valve

• V-18  Bottom draw valve

• V-20  Safety relief selector

• V-22A  Test valve

• V-22B  Test valve

• CN-1  Fill connection

• CN-4  Vapor connection