Baltimore Aircoil Company Cooling Tower Water Treatment System. Model: RS-335 C. Serial: 88400930. RS Remote Sump tanks offer simplified water treatment, freeze projection, facilitate dry operation, have easy maintenance, etc. for open and closed loop cooling towers as well as evaporative condenser systems. RS-335 specs: 257 gallon net volume, 4 in. suction port size, 470 lbs shipping weight, dimensions: 4.5 ft. L x 3 ft. 11 in. W x 4 ft. H. Also includes Advantage Controls MegaTron model: MGCPF2E-X2-H4 controller (tower conductivity control, pH control, F2 chemical feed timers, flow switch) with H4 internet phone modem communications. (6) PULSAfeeder brand PULSAtron Series A-Plus Metering Pumps.