CHEM-FEED® Diaphragm Metering Pump

The CHEM-FEED® MC2 Diaphragm Metering Pump delivers accurate chemical feed quietly and efficiently against high system pressures. With an easy-to-read LCD user interface and pulse/frequency/4-20 mA input capability, the CHEM-FEED® MC2 pump has the power and flexibility you need to take control of your fluid management process.

The MC2’s exclusive DiaFlex® Diaphragms will last the life of the pump, eliminating the need for expensive rebuild kits.

Technical Overview:

GPH .01 – 16.5 Enclosure Rating NEMA 4X (IP66)
LPH .05 – 62.5 Standards NSF/ANSI 61, CE, cETLus, RoHS
mL/min .8333 – 1042 Control Methods Manual, Remote Analog/Digital
Pressure 175 PSI (12 Bar) Power Supply 100 to 240VAC-50/60Hz



  • DiaFlex® diaphragm design will last the life of the pump, eliminates the need for expensive rebuild kits – Patented
  • Diaphragm Failure Detection (DFD) built-in leak detection comes standard
  • Accurate chemical metering with pressures of up to 175 PSI

Communication and Interface:

  • Operator friendly digital controls with backlit LCD displays motor speed, input signal values, service, and alarm status
  • Signal inputs include: 4-20mA, pulse inputs and Remote start/stop
  • Signal outputs include: Relay (3 amp), open collector, 4-20mA (optional)
  • Compatible with Blue-White’s Flow Verification Sensor (FVS) system
  • Alarm relay monitors the DFD system and FVS system
  • SCADA ready 5-30V DC open collector output loop closes while motor is energized

Superior Design:

  • 2 Year Warranty
  • 200:1 turndown ratio
  • NEMA 4X (IP66) wash-down, chemically resistant powder coated enclosure
  • Large PVDF, Ceramic, double ball check valves without metal springs

Safety Features:

  • Diaphragm Failure Detection (DFD) Senses diaphragm rupture by detecting chemical in the pump head. No false triggering – Patented
  • UV display cover protects controls from harsh environments

What’s Included:

  • MC2 Diaphragm Metering Pump
  • Discharge injection fitting with check valve
  • Option “1” – ½” ID x 3/4” OD tubing pump head
    • ½” hose barb foot valve / strainer
  • Option “2” – ¼” ID x 3/8” OD Tubing pump head
    • Suction foot valve / strainer
    • Suction ceramic weight
  • Option “3” – ½” M/NPT inlet and outlet, with ½” M/NPT injection fitting
    • ½” M/NPT foot valve / strainer
  • Option “4” – ½” F/NPT inlet and outlet, with ½” M/NPT injection fitting
    • ½” M/NPT foot valve / strainer
  • Mounting hardware kit
  • Junction box connectors


Maximum working pressure:
175 psig (12 bar) (model specific)
Maximum Fluid temperature:
130 F (54 C)
Operating Temperature:
14 F to 115 F (-10 C to 46 C)
Storage Temperature:
-40 F to 158 F (-40 C to 70 C)
Operating Voltage (Model Specific):
115VAC/60Hz, 1ph (1.5 Amp Maximum)
230VAC/60Hz, 1ph (0.7 Amp Maximum)
220VAC/50Hz, 1ph (1.0 Amp Maximum)
240VAC/50Hz, 1ph (1.0 Amp Maximum)
Power Cord Plug Type (Model Specific):
115V60Hz = NEMA 5/15 (USA)
230V60Hz = NEMA 6/15 (USA)
220V50Hz = CEE 7/VII (EU)
240V50Hz = AS 3112 (Australia/New Zealand)
230V50Hz = BS 1363/A (UK)
+/- 2% of full scale
Repeatability +/- 0.5
Duty cycle:
Output adjustment range:
0.5-100% in 0.1% increments
Maximum viscosity:
1,000 Centipoise
Maximum suction lift:
15 ft. Water, 0 psig (4.5 m, 0 bar)
Backlit LCD, UV resistant.
Positive action tactile switch keypad.
NEMA 4X (IP66), Powder coated aluminum.
Approximate shipping wt:
MC2 models: 24 lb. (10.9 Kg)
MC3 models: 29 lb. (13.1 Kg)