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
MD3 Literature
Instruction Manuals
MD3 Instruction Manual – 80000-624Technical Data Sheets
MD3 Technical Data Sheet - 85000-194Catalog
Municipal Catalog 2023Engineering Specifications
MD3 Engineering Specifications
3D Visualizer
Features and Benefits
Features
Benefits:
- Exclusive Hyperdrive 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
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
Videos
Related Case Studies
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Replacement Parts
| Image | Catalog Number | Description | Price | Buy |
|---|
Downloads
| Title | |||
|---|---|---|---|
|
CHEM-FEED Municipal Comparison Chart |
3.15 MB | January 24, 2024 | Download |
|
DiaFlex Diaphragms Brochure – 80000-727 |
1.61 MB | April 16, 2024 | Download |
|
Diaphragm Failure Detection (DFD) Brochure – 80000-725 |
4.42 MB | April 16, 2024 | Download |
|
FLEXFLO Pump EDS File |
11 KB | February 21, 2024 | Download |
|
FLEXFLO Pump GDS File |
2 KB | February 21, 2024 | Download |
|
MD3 Engineering Specifications |
59.50 KB | February 22, 2024 | Download |
|
MD3 Instruction Manual – 80000-583 [LEGACY] |
8.08 MB | April 15, 2024 | Download |
|
MD3 Instruction Manual – 80000-624 |
12.84 MB | November 4, 2024 | Download |
|
MD3 Quick Start Guide – 80000-584 [LEGACY] |
1.20 MB | April 16, 2024 | Download |
|
MD3 Technical Data Sheet – 85000-127 [LEGACY] |
1.34 MB | February 14, 2024 | Download |
|
MD3 Technical Data Sheet – 85000-194 |
1.23 MB | May 16, 2024 | Download |
|
Municipal Accessories Guide – 85000-178 |
1,021.20 KB | November 4, 2024 | Download |
|
Municipal Catalog 2024 – 80000-708 |
13.09 MB | July 16, 2024 | Download |
|
Municipal Products Brochure |
2.98 MB | February 14, 2024 | Download |
