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Duplex Air Compressors

D10324HC-S

The Castair D10324HC-S is a heavy-duty duplex industrial series air compressor, engineered by Castair, a family-owned Minnesota company since 1991, for superior performance in medium to large shop environments and mobile applications, including HVAC service trucks requiring high air output and redundancy. Featuring dual 5 HP, single-phase, 208-230V Baldor motors, this compressor delivers up to 35.2 CFM at 175 PSI, operating at a slow 758 RPM for quiet performance and extended durability. Its two-stage, dual full cast iron, oil-lubricated pumps ensure robust reliability, making it ideal for heavy-duty industrial air compressor tasks in HVAC installation, automotive repair, manufacturing, and mobile service operations like duct cleaning or construction.

The 120-gallon horizontal ASME-certified, powder-coated tank provides substantial air storage and is built for safety and corrosion resistance, perfect for powering high-demand pneumatic tools used in HVAC service, such as impact wrenches, refrigerant recovery systems, and pneumatic drills. Equipped with advanced intake noise silencers, including automotive-type filter/silencers with paper elements, the D10324HC-S significantly reduces operational noise, ensuring a quieter workspace in service trucks or job sites while maintaining clean air intake for optimal efficiency. The V-twin cylinder design in each pump promotes 360-degree cooling for enhanced performance and longevity, supported by precision steel connecting rods, automotive-type rod insert bearings at the crankshaft, and needle bearings at the wrist pin for superior reliability.

Key features include tapered roller bearings at both ends of the crankshaft for reduced friction, stainless disc and spring valves offering up to 10 times the lifespan of competitor reed valves for easy maintenance, and pistons with four rings for higher efficiency and minimal oil carry-over. The slow RPM and larger bore/stroke design result in cooler, quieter operation, extending pump life in rugged environments. Rigid metal belt guards, copper discharge, and unloader tubes improve durability and heat dissipation, while an easy-to-read oil sight glass simplifies maintenance. A centrifugal unloader ensures load-less startups, and the duplex design allows operation of one or both pumps, alternating automatically or running together for double the air output, providing redundancy if one pump needs repair.

Measuring approximately 72" L x 24" W x 48" H and weighing around 895 lbs, the D10324HC-S is designed for stationary or mobile industrial use, with mounted starters for easy operation. All Castair compressors are built to order, allowing customization for specific needs. For inquiries or to tailor features, contact Castair,heavy-duty duplex industrial air compressor 10 HP Baldor, Castair D10324HC-S 120-gallon horizontal tank compressor, two-stage air compressor with intake noise silencer Minnesota, ASME-certified air compressor for HVAC service trucks, quiet operation duplex compressor 35.2 CFM 175 PSI, Baldor motor air compressor for HVAC installation, durable cast iron pump compressor for refrigerant recovery, Minnesota-manufactured air compressor for mobile duct cleaning, high-performance two-stage compressor for pneumatic HVAC tools, industrial duplex air compressor for construction and service truck applications.

 INDUSTRIAL AIR COMPRESSORS CAST IRON
D10324HC2-S

TWO STAGE ELECTRIC ASME HORIZONTAL TANK

Up to “70 CFM” on single-phase electricity, plus the security of a back-up.

  • Two stage
  • Electric
  • 2 pumps
  • 2 motors
  • Horizontal tank 

Same features as Industrial Series.

HP  Total  HP  Phase  Pump  R.P.M.  CFM @  0-PSI CFM@  175 PSI LxWxH  Dimension Tank Gal/Type  Wt. (Lbs.) Unit Model 
2×5 hp  10  1  767  44  35  85x28x57  120  1110  D5112HC1-S 
2×5 hp  10  1  767  44  35  85x30x64  240  1460  D5124HC-S 
2×5 hp  10  1  420  44  35  85x28x57  120  1300  D5112HC2-S 
2×5 hp  10  1  420  44  35  85x30x64  240  1650  D5124HC2-S 
2×7.5 hp  15  1  895  64.8  49.6  85x28x57  120  1240  D7112HC1-S 
2×7.5 hp  15  1  895  64.8  49.6  85x30x64  240  2140  D7124HC1-S 
2×7.5 hp  15  1  585  70  56.2  85x28x57  120  1430  D7112HC2-S 
2×7.5 hp  15  1  585  70  56.2  85x30x64  240  1780  D7124HC2-S 
2×10 hp  20  1  758  90  70  85x28x57  120  1470  D10112HC2-S 
2×10 hp  20  1  758  90  70  85x30x64  240  1820  D10124HC2-S 
2×10 hp  20  1  570  90  70  94x28x57  120  1800  D10112HC3-S 
2×10 hp  20  1  570  90  70  94x30x64  240  2150  D10124HC3-S 
2×5 hp  10  3  767  44  35  85x28x57  120  1080  D5312HC1-S 
2×5 hp  10  3  767  44  35  85x30x64  240  1430  D5324HC1-S 
2×5 hp  10  3  420  44  35  85x28x57  120  1270  D5312HC2-S 
2×5 hp  10  3  420  44  35  85x30x64  240  1620  D5324HC2-S 
2×7.5 hp  15  3  895  64.8  49.6  85x28x57  120  1210  D 7312HC1 
2×7.5 hp  15  3  895  64.8  49.6  85x30x64  240  1560  D7324HC1-S 
2×7.5 hp  15  3  585  70  56.2  85x28x57  120  1400  D7312HC2-S 
2×7.5 hp  15  3  585  70  56.2  85x30x64  240  1750  D7324HC2-S 
2×10 hp  20  3  758  90  70  85x28x57  120  1410  D10312HC2-S 
2×10 hp  20  3  758  90  70  85x30x64  240  1760  D10324HC2-S 
2×10 hp  20  3  570  90  70  94x28x57  120  1740  D10312HC3-S 
2×10 hp  20  3  570  90  70  94x30x64  240  2190  D10324HC3-S 
2×15 hp  30  3  795  123.4  100.4  94x28x62  120  2005  D15312HC3-S 
2×15 hp  30  3  795  123.4  100.4  94x30x68  240  2355  D15324HC3-S 

All units are listed with mag. starter mounted & wired. If starter not needed, call for deduction.

Options: Factory Mounted 

*Low Oil Control #6304x2M:
*Hour Meter 230 volt #HRM75x2M: #HRM460x2M(460 V)
Alternator #ALT230M: #ALT460M:
*Electronic Auto Drain #SDV03M:
*Dual Control (standard on C3)  #DC1x2M (C1): #DC2x2M (C2):
*Intake Noise Silencers #SA100x2M (C1): #SA100x4M (C2,C3):
Belt Tensioner
#184Dx2M (5HP):
#215Dx2M (7.5-10HP): #254Dx2M (15HP):
*Right From the Start kit#RFS001D (10hp):#RFS002D (15 & 20hp):#RFS003D (25 & 30hp):
Vibration Pads (set of 4)#VP1004

Dual Controls not recommended for units with alternators. Cannot have silencers & dual control on C3 units.

All Options: *Order all asterisk options and receive %10 off options. 


Aftercoolers  Installed On  CFM 
#BGAC1x2M  10,15, & 20hp units  70 
#BGAC2x2M  25 & 30 hp units  100 
All options C1All options C2All options C3
#AOC1D  #AOC2D  #AOC3D

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