LMI Excel B73 Legacy LMI 277 Metering Pumps 0.0 - 4.5 GPH (0.0 - 17 LPH); 50 psi (3.4 bar)

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SKU: B73x-277
Weight: 14.00 LBS
Shipping: Calculated at Checkout
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Industry Standard Series B Chemical Metering Pump

Year after year of reliable performance.

An industry standard for over 20 years, the Series B Chemical Metering Pump is a rugged, reliable choice for the harshest environments.
Its 100% enclosed chemical resistant housing provides this solenoid unit with ultimate protection, making it ideal for corrosive chemical dosing.
With a variety of models and options available, you have full flexibility to control stroke length and frequency, pressure capacity, pulse / 4.20 mA inputs and more.


  • Rugged construction and time-tested design make the Series B pumps a consistent performer
  • With rigid chemically-resistant housing and encapsulated electronics – this solenoid pump is designed to last year after year.
  • Available with multiple options, the Series B pumps are able to accommodate a variety of applications

Standard Features:

  • Adjustable stroke frequency and the flexibility of up to 1000:1 turndown ratio
  • Manually adjustable stroke length provides accurate pump output adjustment
  • NEMA 4X/IP65 enclosures for protection against corrosive environments
  • Time-tested electronics for reliable, repeatable performance
  • Totally encapsulated electronics for protection against moisture and corrosive conditions
  • Inputs for low level switch available on certain models
  • Models with external pacing for flow proportional applications
  • UL, CUL, NSF 50, NSF 61, NSF 372, CE Certifications

Optional Features:

  • Four function valve
  • AUTOPRIME™ liquid End
  • High viscosity liquid end
  • Low level float switch
  • Repair & preventive maintenance kits
  • Calibration columns


Max Capacity:

Max Pressure:

BX1 – 1.6 GPH (6.1 l/h)

150 psi (10.3 Bar)

BX2 – 2.5 GPH (9.5 l/h)

100 psi (6.9 Bar)

BX3– 4.5 GPH (17.0 l/h)

50 psi (3.4 Bar)

BX4 – 7.0 GPH (26.5 l/h)

 30 psi (2.07 Bar)


  • Head/ Fittings/ Balls: 316SS
  • Connections Suction/Discharge: Pipe ¼" NPT M
  • Cartridge Valve or Seal Ring: 316SS

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