• Air Compressor
• Oil−flooded, rotary screw type air compressor, sized to supply a minimum of 120 sCFM (3.4 m3/min) of usable air.
• Pneumatic Modulating Inlet Valve controls air delivery while maintaining constant pressure.
• Auto Sync Balancing System automatically maintains the air pressure within +/− 5% of the water pump pressure throughout the pressure range.
• Air Compressor Oil System contains a spin−on, full−flow oil filter unit and a thermostatic valve to control oil flow to the cooler.
• Air / Oil separator head assembly with spin-on cartridge.
• Air Compressor Cooling System uses the unit’s water pump, a copper and brass shell and tube heat exchanger to cool the compressor. The system maintains recommended operating temperatures throughout the full operational range in ambient temperatures up to 115°F (46.1°C).
  
  Engine Specifications
• Cummins, model B3.3, four cylinder, turbocharged, liquid-cooled, delivering a maximum of 85 horsepower (63 kW), 3.3L displacement, four−cycle, SAE #5 bell housing, flywheel mounted flexplate, diesel fueled.
• Heavy-duty muffler
• Pressure lubrication system with oil pressure warning light and spin−on oil filter. An extension hose is installed on the engine oil drain with a valve located at the oil pan and a plug installed in the end of the hose to facilitate oil changes.
• 12−volt electric with 65A alternator, electric ignition and start switch.
  
  Pump Specifications
• Waterous CPK−2 centrifugal fire pump. CPK−2 utilizes a high−tensile gray iron body, bronze impeller, replaceable wear rings and maintenance−free mechanical seals.
• Intake: 3 inch
• Discharge: 2 inch
  
  Priming System
• Priming System: Pneumatic oil−free primer capable of priming the water pump through 20 feet (6 m) of 2−1/2 (63.5 mm) inch hard intake hose with a 10 foot (3 m) lift. Controls are mounted on the operator’s panel.
  
  Plumbing
• Inlet: Inlet piping is 2−1/2” stainless steel pipe with a 2−1/2” tank to pump valve controlled at the pump panel. A 2−1/2” valve with integral bleeder valve is provided behind the pump panel for overboard pump inlet with a 2−1/2” F−NST swivel connection. Victaulic−type couplings are utilized in the pump inlet for flexibility and improved serviceability.
• Discharge: Plumbing to two panel mounted 1−1/2” discharge outlets incorporate a stainless steel manifold and welded stainless steel pipe. A 1−1/2” tank fill provision with 1−1/2” valve is provided. Victaulic−type couplings are utilized in the discharge plumbing for flexibility and serviceability.
  
  Foam Proportioner
• A FoamPro® System 1601 automatic foam proportioner (Class A foam only) is provided and installed to inject foam concentrate into all discharges. The proportioner automatically meters the correct percentage of foam concentrate into the water stream by a 1.5” paddlewheel sensor.
  
  Pump Operator’s Panel incorporated into frame
• Contains Auto Sync, air compressor, foam proportioner controls, and water pressure and air pressure gauges.

• Pressure Relief: An optional pressure relief system is available to comply with NFPA 1906 standards.
• Foam Systems: Aquis™ Foam Proportioner or Advantus® Foam System.
• On-site operation and maintenance instruction. Contact factory for pricing.

Specs Sheet:
250-120-DSC

Operational Guide:
250-120-DSC

Industry-leading sales and support.
When you purchase Waterous equipment, not only do you get quality products, you get quality service. Our expert service technicians are the best in the business and they are always happy to answer any service questions you might have. The numbers for our service and training specialists are listed below for your convenience. If you have a general service question please call our main number and our staff will kindly direct you to the appropriate department.

Sales/Applications Assistance
Phone: 651-450-5234 (Press 3)
sales&service@waterousco.com

Service Assistance
Phone: 651-450-5200
Fax: 800-488-1228
sales&service@waterousco.com