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  • The Model 4475 pump is a reciprocating-piston, low-pressure single action pump.
  • Air powers the pump's piston on the dispensing, or working, stroke.
  • An internal spring returns the piston and resets it for the working stroke.
  • It pumps continuously when the dispensing (fluid outlet) valve is open and 20-120 psig air is supplied to the pump.
  • Operation: Pneumatic fluid delivery stroke, spring return stroke
  • Pump Tube Length: 34" (86 cm)
  • Attachment: 2" Bung, adjustable for 55 and 16 gal. drums, bench and portable tanks
  • Effective Pump Ratio: Approx. 0.7:1 to 0.8:1 depending on inlet air pressure
  • Inlet Air Pressure: Max: 120 psi (8.3 bar) Min: 20 psig (1.4 bar) for best results, keep regulated to approx. 40 psi.
  • Output/Stroke: 2.9 in3 (48 cm3)
  • Free Delivery: Up to 4 gpm (15 lpm)
  • Bare Pump, 3/8" or 1/2" NPTF.

  • Product details

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