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SLT Series

Bitzer two-stage reciprocating compressor systems for hydrocarbon extraction condensing, deep ethanol pre-cooling, and large-scale operations requiring -58°F (-50°C). Stainless steel reservoir, high-pressure vortex pumps, R-448A. Made in USA.

-58°F Min Temp / -50°C
Bitzer 2-Stage Stainless Reservoir Vortex Pump Made in USA
SLT Super Low Temp Series
Verified Performance Data

SLT Series — Cooling Capacity at 70°F Ambient

Ambient range 20°F–100°F. All capacities at 70°F ambient.

Model -58°F / -50°C -43.6°F / -42°C 31.1°F / -0.5°C Pump Connections Refrigerant Tank Dimensions (D x W x H) Weight Voltage FLA / MCA
AG4000-SLT 7,800 BTU/hr 13,800 BTU/hr 100,700 BTU/hr 2.2kW Vortex — 27.3 GPM max @ 13 PSI 3/4" NPT R-448A 15 Gal SS 36.75" x 67.75" x 66.13" 1,000 lbs 480V/3P 33A / 38.5A
AG5000-SLT 15,500 BTU/hr 29,500 BTU/hr 179,000 BTU/hr 3.75kW Vortex — 35.7 GPM max @ 31 PSI 1-1/2" NPT R-448A 15 Gal SS 49.75" x 69.38" x 75.63" 1,250 lbs 480V/3P 46A / 53.1A
AG10000-SLT 31,100 BTU/hr 58,900 BTU/hr 358,000 BTU/hr 7.5kW Vortex — 71.3 GPM max @ 25 PSI 1-1/2" NPT R-448A 30 Gal SS 49.75" x 69.38" x 75.63" 2,500 lbs 480V/3P 92A / 106.2A
AG15000-SLT 46,600 BTU/hr 88,400 BTU/hr 536,900 BTU/hr 3.75kW Vortex — 35.7 GPM max @ 31 PSI 2" NPT R-448A 50 Gal SS 49.75" x 69.38" x 75.63" 3,750 lbs 480V/3P 138A / 159.3A
AG20000-SLT 62,100 BTU/hr 117,900 BTU/hr 715,900 BTU/hr 3.75kW Vortex — 35.7 GPM max @ 31 PSI 2" NPT R-448A 50 Gal SS 49.75" x 69.38" x 75.63" 5,000 lbs 480V/3P 184A / 212.43A

All information for reference only. Specifications subject to change. Compressor: Bitzer 2 Stage Reciprocating on all SLT models.

Hydrocarbon Extraction

SLT + ULT Combination Systems

SLT condensing units paired with ULT subcoolers for complete butane/propane solvent recovery to -65°F (-54°C).

ConfigurationCapacity (70% Butane / 30% Propane)Subcooled Solvent Temp
AG4000-SLT + AG1000-ULT90 lbs/hr (1.5 lbs/min)-65°F (-54°C)
AG5000-SLT + AG1000-ULT120 lbs/hr (2 lbs/min)-65°F (-54°C)
AG5000-SLT + AG2000-ULT210 lbs/hr (3.5 lbs/min)-65°F (-54°C)
AG10000-SLT + AG2000-ULT300 lbs/hr (5 lbs/min)-65°F (-54°C)
AG10000-SLT + AG5000-ULT420 lbs/hr (7 lbs/min)-65°F (-54°C)
AG15000-SLT + AG5000-ULT600 lbs/hr (10 lbs/min)-65°F (-54°C)

Capacity = solvent mass flow rate, not biomass throughput.

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Full spec sheets with complete electrical and dimensional data for all SLT models.

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Resources

Related Guides

Guide
Hydrocarbon Extraction Cooling Requirements
Cooling for butane and propane hydrocarbon extraction — solvent subcooling to −65°F, why SLT+ULT systems are paired,…
Guide
How to Size an Industrial Chiller
How to size an industrial chiller: heat load, flow rate, temperature differential, and ambient conditions — and how…
FAQ

Common Questions

How cold does the SLT (Super Low Temp) series go?

SLT reaches about −58°F (−50°C) — hydrocarbon condensing and deep ethanol pre-cooling.

How is SLT different from ULT?

SLT is a two-stage system for the −50°C range; ULT uses cascade refrigeration to reach −80°C.