ACS Gray Line GL10 Two-Stage Air Compressor Pump, 10 HP, 34 CFM at 175 PSI
The GL10 is the 10 HP pump in the ACS Gray Line, the economy replacement line in the AirComParts catalog. It is a four-cylinder slow-speed cast-iron two-stage that makes 34 CFM at 175 PSI while turning only 700 RPM. Four bores at low speed is the quiet, long-lived way to reach 34 CFM: piston speed stays down, discharge temperature stays down, and the rings and bearings last the way cast-iron pumps are supposed to. Inserted connecting rods keep the rod bearings serviceable.
Key specifications
- Horsepower: 10 HP
- Delivery: 34 CFM at 175 PSI
- Speed: 700 RPM, slow speed
- Stages and cylinders: 2 stage, 4 cylinder
- Construction: cast iron
- Connecting rods: inserted
- Unloading: centrifugal
- Motor frame: suitable for 215T frame motors
- Weight: 335 lb
How it relates to the E Series
The GL10 shares its ring sets and rod inserts with the ACS EC-10, so the common wear parts are the same across both pumps and the rebuild kits interchange. The AirComParts catalog lists the Gray Line as a replacement clone for the Saylor-Beall 707. Confirm the cross-reference against your own machine before ordering if you are replacing a branded OEM pump.
Service notes
Centrifugal unloading suits ordinary start-stop operation, where the pressure switch stops the motor and the unloader bleeds the head so it restarts unloaded. A constant-run, dual-control or engine-driven machine needs head unloaders instead. At 335 lb this is a two-person lift or a hoist job, so plan the swap. Replace the check valve and belts with the pump, keep the intercooler and flywheel fins clean, and run compressor oil.
Typical applications
Larger stationary shop compressors, automotive and fleet service bays, fabrication and welding shops, body shops running multiple air tools, and as a cost-conscious replacement pump on any 10 HP 175 PSI two-stage package taking a 215T frame motor.
The ACS Gray Line GL10 two-stage air compressor pump delivers 34 CFM at 175 PSI on 10 HP, in 4-cylinder slow-speed cast iron at 700 RPM with inserted rods and centrifugal unloading.
NOTE: Actual product may be different from pictured!
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