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
mL/min
1.6667 - 3317
Pressure
145 PSI (10 Bar)
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:
  • 5” touchscreen color LCD display
  • User-friendly configurations
  • Control Methods:
    • Manual Control
    • 4-20mA Input
    • Remote Start/Stop
    • Pulse Input
    • Frequency Input
    • EtherNet/IP
    • Modbus TCP/IP
    • PROFIBUS
    • Alarm Outputs
    • FVS
    • Relay Ouput
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 by detecting chemical in the pump head. No false triggering – Patented
  • Security programmable 6-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

Output

Motor Speed % RPM 0 PSI (0 bar) 40 PSI (2.8 bar) 90 PSI (6.2 bar) 140 PSI (9.7 bar)
GPH (mL/min)
0% 0 0 0 0 0
1% 1.3 0.5 (32) 0.5 (32) 0.4 (25) 0.4 (25)
5% 10 2.6 (164) 2.4 (151) 2.3 (145) 2.1 (132)
10% 19 5 (315) 4.8 (303) 4.4 (278) 4.1 (259)
25% 48 12.5 (789) 11.9 (751) 11 (694) 10.8 (681)
50% 95 25 (1577) 23.9 (1508) 22 (1388) 21.4 (1350)
75% 142 37.6 (2372) 35.7 (2252) 33.4 (2107) 31.2 (1968)
100% 190 52.6 (3318) 48.2 (3041) 37.9 (2391) 34.6 (2182)

Specifications

Maximum Working Pressure
  • 145 psig (10 bar)
Maximum Fluid Temperature
  • PVDF connections: 185 °F (85 °C)
Maximum Ambient Temperature
  • 14 °F to 115 °F (-10 °C to 46 °C )
Maximum Storage Temperature
  • -40 °F to 158 °F (-40 °C to 70 °C)
Maximum Viscosity
  • 1,000 Centipoise
Maximum Suction Lift
  • 23 ft. Water, 0 psig (7 m, 0 bar)
  • 115VAC/60Hz, 1ph (2.0 Amp Maximum)
  • 230VAC/60Hz, 1ph (1.0 Amp Maximum)
Operating Voltage
  • 220VAC/50Hz, 1ph (1.0 Amp Maximum)
  • 240VAC/50Hz, 1ph (1.0 Amp Maximum)
  • 230VAC/50Hz, 1ph (2.0 Amp Maximum)
  • 115V60Hz = NEMA 5/15 (USA)
  • 230V60Hz = NEMA 6/15 (USA)
Power Cord Options
  • 220V50Hz = CEE 7/VII (EU)
  • 240V50Hz = AS 3112 (Australia/New Zealand)
  • 230V50Hz = BS 1363/A plug (United Kingdom)
Motor
  • 1/4 HP Brushless DC motor
Motor Speed Adjustment Range
  • 2,000:1 (0.05% – 100% motor speed) Max. rpm = 190
  • 0.1% increments > 10% motor speed
Motor Speed Adjustment Resolution
  • 0.01% increments > 1% motor speed and < 10%
  • 0.001% increments < 1% motor speed
Display / User Interface
  • 5” touchscreen color LCD, UV resistant.
Display Languages
  • English, Spanish, French, German, and Portuguese selectable
Security
  • Programmable 6-digit password
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 Weight
  • 50lb. (22.7 Kg)
Enclosure
  • NEMA 4X (IP66), Polyester powder coated aluminum & Noryl
RoHS Compliant
  • Yes
Standards
  • cETLus, CE, NSF61

Accessories

m12-cables-800x800-1.jpg
KIT-M12

KIT OF 2 M12 CABLES 10 FEET LONG

Add to cart
CABLE-UAC_800x800.jpg
CABLE-UAC

USB A-C CABLE

Add to cart
72000-380
72000-557

KIT MOUNTING BRACKET MD-3

Add to cart
KIT-DP3
KIT-DP3

CABLE M12 NETWORK BUS CONNECTION

Add to cart
Pump Mount Bracket - KIT-PSM
KIT-PSM

WALL MOUNT KIT 1/2/3/4 SERIES

Add to cart

Replacement Parts

ImageCatalog NumberDescriptionPriceBuy

Downloads

Title
CHEM-FEED Municipal Comparison Chart

3.15 MB January 24, 2024
DiaFlex Diaphragms Brochure – 80000-727

1.61 MB July 24, 2023
FLEXFLO Pump EDS File

11 KB February 21, 2024
FLEXFLO Pump GDS File

2 KB February 21, 2024
MD3 Engineering Specifications

59.50 KB February 22, 2024
MD3 Instruction Manual – 80000-583 [LEGACY]

8.08 MB February 15, 2024
MD3 Instruction Manual – 80000-624

12.84 MB February 23, 2024
MD3 Quick Start Guide – 80000-584

1.20 MB September 12, 2023
MD3 Technical Data Sheet – 85000-127 [LEGACY]

1.34 MB February 14, 2024
MD3 Technical Data Sheet – 85000-194

1.23 MB February 15, 2024
Municipal Accessories Guide – 85000-178

1,021.20 KB April 29, 2022
Municipal Catalog 2024 – 80000-708

13.09 MB December 29, 2023
Municipal Products Brochure

2.98 MB February 14, 2024

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