Quincy · QT · TWO-STAGE PISTON
🇺🇸Commercial / Industrial

QT-5 Duplex (120 gal)

10 HP · Horizontal · 100% duty · electric · splash · 2-stage
AVERAGE PRICE
$7,999
1 retailer
Quincy QT-5 Duplex (120 gal)

The Quincy QT-5 Duplex pairs two QT1 cast-iron splash-lubricated two-stage pumps and two 5 HP motors on a 120-gallon ASME horizontal tank for 17.2 ACFM combined at 175 PSI. Built for 100% continuous duty, the duplex panel includes IEC magnetic starters, automatic alternation with lead/lag, test/off/run switches, hour meters, fault indicators, and a 115V control circuit in a NEMA 1 enclosure. Common in dental clinics, small body shops, and labs where one pump can be serviced while the other carries production. Dimensions roughly 79 in L by 34 in W by 54 in H with weight near 1,115 lbs.

HP
10
CFM
17.2 @ 175 PSI
Duty
100% continuous
Tank size
120 gal
Air output per horsepowerAirflow per motor HP
1.72CFM/HP
Poor 2.8Typical 3.15Good 3.5
Isentropic efficiencyClass median · 2-stage piston
67%
Poor <50Good 70Best 92
Price per cubic foot · minuteVerified retailer price
$465$/SCFM
Good $180Typical $211High $260
PUMP & DRIVE
Stages2-stage recip
CylinderQT1 cast iron pump x 2
Pump RPM658 rpm
Lubricationsplash
OilISO 100 non-detergent compressor oil
Sump—
Pump life40,000 hrs
Pump material—
Head material—
Intercoolerfinned-tube between-stage
PERFORMANCE
Catalog CFM17.2 @ 175 PSI
CFM / HP1.72
Cut-in / out—
Tank fill—
Est. draw8.8 kW
COST & MAINTENANCE
Compressor Controller ROI calc · $0.14/kWh · 1920 hr/yr · 70% motor efficiency · HP×1.10 sizing · savings 23–42% of electric
Electric · yearlyEst. $3,151
Maintenance · yearlyEst. $250
Savings with Compressor Controller · yearlyEst. $725–$1,323
ELECTRICAL & FORM
Serviceelectric
Voltage208/230/460
Amps—
Motor—
Motor RPM1750 rpm
Controlduplex control panel with automatic alternation, lead/lag, dual pressure switch
Startermagnetic with alternator
Weight1115 lb
FormHorizontal · 120 gal · 225 PSI tank rating
BUILD & ENVIRONMENT
Air outlet1 in NPT
DrainManual ball valve standard
Drain outlet—
ASME tankYes
Made in USAYes
Noise—
Op. temp40–104 °F
Dimensions—
Ship weight1115 lb
Warranty—

Where this sits in the catalog

Histograms below: highlighted bar marks this unit’s bucket.

Catalog
1655 units
Peer class
127 · 10 HP
Sizing & pricevs. 127 in class
  • SCFM @ 10 HP17.2cfm
    17median 34.279
    -49.7% vs. median
  • Average price$7,999
    $3,555median $7,494$27k
    +6.7% vs. median
Efficiency vs. peersvs. 127 in class
  • CFM per HP1.72cfm/hp
    1.72median 3.427.96
    -49.7% vs. median
  • Price per CFM$474$/scfm
    $103median $210$517
    +125% vs. median
Where this is sold1 verified retailer · USD
Find an installer / dealer near youAuthorized Quincy dealers · search by ZIP

Price history

Showing the current verified price for each retailer. As the price-tracking worker collects new readings, dots will appear along each line.

$7,599$7,866$8,132$8,399avg $7,999today-10d-20d-30d
AirCompressors.com (QT-5 Duplex 120 gal)