Blue-White - Chemical metering and fluid measurement solutions; chemical metering pumps, peristaltic pumps, diaphragm pumps, multi-diaphragm pumps, flow meters, flowmeters, variable area flow meters, paddlewheel flow meters, ultrasonic flow meters, engineered skid systems, single skid system, duplex skid system, triplex skid system, water analyzers...

MD3

CHEM-FEED® Multi-Diaphragm Metering Pump

The MD3 Multi-Diaphragm Metering Pump delivers smooth, continuous chemical feed even when injecting chemicals that off-gas like Peracetic Acid and Sodium Hypochlorite.  The cutting-edge Hyperdrive Technology allows for alternating pumping action between two diaphragms: when one diaphragm is in the suction phase, the other is in the discharge, resulting in a smooth chemical feed profile and eliminating the chance of vapor lock and loss of prime.

The MD3’s exclusive DiaFlex® Diaphragms will last the life of the pump, eliminating the need for expensive rebuild kits.

Technical Overview:

GPH
.03 - 52.6
LPH
.10 - 199
PSI
145
Bar
10
Enclosure Rating
NEMA 4X (IP66)
Standards
NSF/ANSI 61, CE, cETLus, RoHS
Control Methods
Manual, Remote Analog/Digital
Power Supply
100 to 240VAC-50/60Hz
Literature
3D Visualizer

Features

Benefits:
  • Exclusive Hyperlink Drive technology allows for smooth chemical feed – Patent Pending
  • Dual Diaphragm with full stroke technology will not lose prime, ideal for pumping chemicals that off-gas (Peracetic Acid, Sodium Hypochlorite)
  • Can pump chemicals continuously, like a peristaltic pump, without the need for tube assemblies
Communication and Interface:
    • Operator friendly digital touch pad with menu driven software.
    • VGA Graphic multi-color backlit LCD displays remote/local control status, motor speed,
    • output rate, input signal values, service and alarm status.
    • Inputs include: 4-20mA, 0-10Vdc, and Pulse inputs for remote external speed control and 0-30 VDC / contact closure remote start/stop
    • Outputs include: Scalable 4-20mA or pulse, one 250V/6A relay and three 115V/1A contact closures assignable to monitor up to 17 different pump functions including TFD, FVS, remote/local control setting, motor on, fault, current operating mode, and others.
Superior Design:
  • 5 Year Warranty
  • 2,000:1 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, preventing hazardous chemical spills
  • Security programmable 4-digit password to prevent tampering
Optional Components Available:
  • Mounting Extended Brackets (72000-557) – 1 Pair, SS, 4 SS Screws
What’s Included:
  • MD3 Multi-Diaphragm Metering Pump
  • Suction foot valve / strainer
  • Mounting hardware kit
  • Fitting Kit
    • ½” M/NPT straight and elbow connections
    • ½” Hose barb straight and elbow connections
    • Union nuts

Specifications

Maximum Working Pressure
  • 145 psig (10 bar)
Maximum Fluid Temperature
  • PVDF connections: 185 F (85 C)
Ambient Operating Temperature
  • 14 F to 115 F (-10 C to 46 C)
Ambient Storage Temperature
  • -40 F to 158 F (-40 C to 70 C)
Operating Voltage
  • 115VAC/60Hz, 1ph (2.0 Amp Maximum)
  • 230VAC/60Hz, 1ph (1.0 Amp Maximum)
  • 220VAC/50Hz, 1ph (1.0 Amp Maximum)
  • 240VAC/50Hz, 1ph (1.0 Amp Maximum)
  • 230VAC/50Hz, 1ph (2.0 Amp Maximum)
Power Cord Options
  • 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 plug (United Kingdom)
Enclosure
  • NEMA 4X (IP66), Polyester powder coated aluminum.
Maximum Overall Dimensions
  • 16-1/8”W x 15-1/4”H x 15-5/16”D (40.9W x 38.7H x 38.9D cm)
Approximate Shipping WT
  • 53 lb. (24.04 Kg)
Motor
  • 1/4 HP Brushless DC motor
Motor Speed Adjustment Range
  • 2,000:1 (0.05% – 100% motor speed)
Motor Speed Adjustment Resolution
  • 0.1% increments > 10% motor speed
  • 0.01% increments > 1% motor speed and < 10%
  • 0.001% increments < 1% motor speed
Maximum Viscosity
  • 1,000 Centipoise
Maximum Suction Lift
  • 23 ft. Water, 0 psig (7 m, 0 bar)
Display
  • 3 color VGA backlit LCD, UV resistant.
Display Resolution
  • 0.0 > 10% motor speed
  • 0.00 > 1% motor speed and < 10%
  • 0.000 < 1% motor speed
Display Languages
  • English, Spanish, French or German selectable.
Keypad
  • Eleven button positive action tactile switch keypad.
Security
  • Programmable 4-digit password.

Videos

Accessories

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Replacement Parts

ImageNameCatalog Number

Downloads

Title
Municipal Brochure
1295 downloads
95653 11.69 MB July 6, 2022
CHEM-FEED Municipal Comparison Chart
147 downloads
93676 3.15 MB May 17, 2022
Municipal Accessories Guide – 85000-178
281 downloads
93033 1,021.20 KB April 29, 2022
MD3 w/ Skid System Engineering Specifications
82 downloads
64957 67.00 KB February 10, 2022
MD3 Engineering Specifications
337 downloads
64956 59.50 KB February 16, 2022
MD3 Technical Data Sheet 85000-127
1603 downloads
64955 1.34 MB October 14, 2022
MD3 Instruction Manual – 80000-583
1522 downloads
64952 8.08 MB June 27, 2022

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