Tank and Pump Packages for Process Chillers

Legacy Chiller, Inc.’s model RRT (polyethylene) and RST (stainless steel) outdoor-rated external tank/pump packages for process chillers range in capacity from 30 to 600 U.S. gallons. Custom systems can go up to 1200 U.S. gallons. These systems are ideal for use with our PZA and PZW package process chillers as well as a variety of custom applications that require additional system fluid volume.

Insulated tank and pump package

Shown with panels removed.

Legacy Tank and Pump package, varying in 30 to 600 gallons

Standard Tank and Pump Package Features:

  • 11 ga. 304 stainless steel tanks (all RRT models)
  • 3/4-inch tank and fluid piping insulation
  • Copper fluid piping
  • Tank vent and drain connections on pressure-rated "SS" models only
  • Tank pressure relief valve on pressure-rated "SS" models only
  • Fused evaporator fluid re-circulating stainless steel pump
  • Fluid pump discharge ball valve and cleanable "Y" strainer
  • Control box with pump terminal block
  • Painted, galvanized steel sheet metal cabinet

Available Options:

  • Fused, stainless steel process pump
  • Dual system pump with auto change-over
  • Tank fluid sight glass
  • Tank liquid level indicator with dry contacts
  • Low-flow bypass valve
  • Auto city water makeup solenoid
  • Special piping for deionized and reverse osmosis water systems
  • 1-inch tank and piping insulation in lieu of 3/4 inch
  • Seal-tight electrical connections
A machine equipped with a hose, illustrating its role in operations requiring fluid movement or management.

Side view showing VFD controller location inside the cabinet.

Legacy – 600 Gallon (Polyethylene) Model: RRT600H
Tank and Pump Package – Dual Vertical 10 HP Process Pumps with VFD Controller
(Shown with side panels removed and before piping insulation was added.)

An industrial water heater with a sturdy metal frame, showcasing its size and functionality for large-scale heating needs.
600 gallon dual vertical 10 horsepower tank

Side view showing dual vertical 10 HP process pumps.

Polyethylene Tank Specifications

Tank Model Length (In.) Width (In.) Height (In.) Water Connection Tank Capacity Recirculation Pump FLA230/3 Phase FLA460/3 Phase Weight (LBS.)
RRT200 88 56 60 2" FPT 200 Gallons 3 HP 9.4 4.5 445
RRT300 88 56 60 2.5" FPT 300 Gallons 3 HP 9.4 4.5 465
RRT500 120 56 60 3" FPT 500 Gallons 5 HP 13.7 6.5 595
RRT600 120 56 60 3" FPT 600 Gallons 5 HP 13.7 6.5 625

Stainless Steel Tank Specifications

Tank Model Length (In.) Width (In.) Height (In.) Water Connection Tank Capacity Recirculation Pump FLA230/3 Phase FLA460/3 Phase Weight (LBS.)
RRT20-SS 36 34 36 1" FPT 20 Gallons 1/2 HP 2.6 1.3 475
RRT50-SS 46 34 36 1" FPT 50 Gallons 1/2 HP 2.6 1.3 526
RRT80-SS 75 34 36 1 1/4" FPT 80 Gallons 3/4 HP 3.5 1.7 600
RRT120-SS 85 34 36 1 1/2" FPT 120 Gallons 1 1/2 HP 5.6 2.8 675
600 gallon cooling tank with the side panels remove to show compressors, insulated copper piping, and an insulated tank

Door panels were removed to show the inside.

Legacy – Custom Model: PZA35DH5VFD (35 ton dual circuit packaged air cooled chiller) paired with a 600 gallon tank unit with Dual Auto Switch-Over VFD Controlled Pumps.

Variable frequency drive to adjust the frequency and voltage of the power supplied to the motor

Inside unit behind electrical cabinet

Close-up image of a water pump, emphasizing two pipes and the mechanical features of the device.

Shown at right: Dual Auto Switch-Over VFD Controlled Pumps (Before insulation was added)

Propylene Glycol Capacity Correction Factor Table

Percent Propylene Glycol by weight 15% 20% 25% 30% 35% 40% 50%
Freezing Point in °F 24 18 15 9 5 -5 -30
Capacity Factor Multiplier* 0.992 0.986 0.972 0.960 0.950 0.928 0.878
Pressure Drop Multiplier 1.04 1.08 1.13 1.21 1.26 1.47 2.79

Ethylene Glycol Capacity Correction Factor Table

Percent Ethylene Glycol by weight 10% 15% 20% 25% 30% 35% 40%
Freezing Point in °F 25 21 17 11 5 0 -10
Capacity Factor Multiplier* 0.98 0.96 0.95 0.93 0.92 0.91 0.89
Pressure Drop Multiplier 1.08 1.11 1.16 1.21 1.27 1.32 1.38

*At standard ARI 590 conditions: 54° F entering fluid temperature, 44°F leaving fluid temperature, 95°F ambient temperature, 0.0005 fouling.