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...

MD1

CHEM-FEED® Multi-Diaphragm Metering Pump

The MD1 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 minimizing the risk of vapor lock.

The MD1’s exclusive DiaFlex® Diaphragms will last the life of the pump, eliminating the need for expensive rebuild kits. 

Technical Overview:

GPH
.0008 - 8.5
LPH
.003 - 32.2
mL/min
.054 - 536.3
Pressure
150 PSI (10.3 Bar)
Enclosure Rating
NEMA 4X (IP66)
Standards
NSF/ANSI 61, CE, cETLus, RoHS
Control Methods
Manual, Remote Analog
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 & Interface:
  • Input: 4-20mA external control
  • Input: Remote Start/Stop: Non-powered dry contact closure for remote start/stop
  • Input: Compatible with Flow Verification Sensors S6A and Micro-Flo
  • Output: Alarm relay 250V / 3A
  • Output: Motor On / Off single solid-state
  • SCADA Inputs/Outputs include: 4-20mA.
Superior Design:
  • 5 Year Warranty
  • Energy-efficient BLDC motor will not overheat
  • Snap-in-place wall and floor mounting bracket – Patent pending
  • DiaFlex® diaphragm design will last the life of the pump, eliminates the need for expensive rebuild kits – Patented
  • The Automatic Degassing Valve (ADV) System technology eliminates vapor lock risks and the need for external degassing components.
  • Manifold design allows for multiple configuration possibilities – suction and discharge ports can be positioned on the left and right side of the pump
Safety Features:
  • Diaphragm Failure Detection (DFD) Senses diaphragm rupture by detecting chemical in the pump head. No false triggering – Patented
  • Lockout feature prevents any unwanted tampering – Patent pending
  • Display shield to protect controls from harsh environments
What’s Included:
  • MD1 Multi-Diaphragm Metering Pump
  • Discharge injection fitting with check valve
  • Suction foot valve / strainer
  • Suction ceramic weight
  • Mounting hardware kit
  • Display shield

Output

Motor Speed % 0 PSI (0 bar) 30 PSI (2.1 bar) 60 PSI (4.2 bar) 90 PSI (6.2 bar) 120 PSI (8.3 bar) 150 PSI (10.3 bar)
GPH (mL/min)
10% 0.83 (52.7) 0.82 (51.9) 0.81 (51) 0.8 (50.7) 0.78 (48.9) 0.74 (46.5)
20% 1.68 (106.3) 1.66 (104.7) 1.63 (102.8) 1.58 (100) 1.55 (98) 1.49 (93.8)
30% 2.54 (160.3) 2.5 (157.9) 2.44 (154.2) 2.4 (151.3) 2.32 (146.6) 2.24 (141.4)
40% 3.39 (213.7) 3.34 (210.6) 3.26 (205.4) 3.19 (201.3) 3.12 (196.6) 2.99 (188.6)
50% 4.23 (266.8) 4.17 (262.9) 4.08 (257.5) 3.99 (251.9) 3.86 (243.3) 3.73 (235.4)
60% 5.1 (321.6) 5.02 (316.9) 4.9 (309.1) 4.79 (302.2) 4.63 (292.4) 4.49 (283.3)
70% 5.93 (373.9) 5.84 (368.5) 5.67 (357.6) 5.59 (352.7) 5.38 (339.6) 5.23 (330)
80% 6.82 (430.2) 6.72 (424) 6.55 (413.1) 6.37 (402.1) 6.2 (391.1) 6.02 (379.9)
90% 7.69 (485.1) 7.58 (478) 7.33 (462.6) 7.21 (455.2) 6.95 (438.4) 6.79 (428.1)
100% 8.5 (536.3) 8.34 (526) 8.18 (516) 7.96 (502) 7.68 (484.4) 7.5 (473.3)

Specifications

Maximum Working Pressure:
  • 150 psig (10.3 bar)
Maximum Fluid Temperature:
  • 185 °F (85 °C)
Maximum Ambient Temperature:
  • 14 to 115 °F/ -10 to 46 °C
Maximum Viscosity:
  • 1,000 Centipoise
Maximum Suction Lift:
  • 20 ft. at 0 PSI
Operating Voltage Range:
  • 115V60Hz 1 PH (0.6A max.)
  • 220V50Hz 1 PH (0.3A max.)
  • 230V60Hz 1 PH (0.3A max.)
  • 230V50Hz 1 PH (0.3A max.)
  • 240V50Hz 1 PH (0.3A max.)
Power Cord Options:
  • 115V/60Hz = NEMA 5/15 (USA)
  • 230V/60Hz = NEMA 6/15 (USA)
  • 220V/60Hz = CEE 7/VII (EU)
  • 240V/60Hz = AS 3112 (Australia/New Zealand)
  • 230V 50/60Hz = BS 1363/A (United Kingdom)
Motor:
  • Brushless DC, 50W
Duty Cycle:
  • Continuous
Turndown Ratio:
  • 10,000:1 (0.01% – 100%) Max. rpm = 100
Enclosure:
  • NEMA 4X (IP66), Valox® (PBT) & PA12
Maximum Overall Dimensions:
  • 7.25”W x 9”H x 10”D (18.5 W x 22.9 H x 25.2 D cm)
Product Weight:
  • 8.5 lb. (3.8 Kg)
Approximate Shipping Dimensions:
  • 10.5” W x 13.75” H x 11” D (26.7 W x 35 H x 28 D cm)
Approximate Shipping Weight:
  • 15.5 lb. (7.0 Kg)
RoHS Compliant
  • Yes
Standards
  • NSF/ANSI 61, cETLus, CE

Accessories

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KIT STAR-3 15 GALLON TANK

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KIT-S30

KIT STAR-3 30 GALLON TANK

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KIT-CQE

KIT QUICK DISCONNECT CD1 EP

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KIT-CQA

KIT QUICK DISCONNECT CD1 AFLAS

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CABLE-UAC

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KIT CD1 1/2″ HOSE BARB

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KIT-DVA1

KIT CD1/MD1 DE-GAS AFLAS

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KIT-DVE1

KIT CD1/MD1 DE-GAS EP

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Replacement Parts

ImageCatalog NumberDescriptionPriceBuy

Downloads

Title
ADV Quick Start Guide – 80000-731

722.51 KB February 15, 2024
CHEM-FEED Municipal Comparison Chart

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

1.61 MB July 24, 2023
MD1 Brochure – 80000-711

5.75 MB July 11, 2023
MD1 Engineering Specifications

71 KB November 28, 2023
MD1 Firmware Update

208 KB May 10, 2023
MD1 Instruction Manual – 80000-614

10.3 MB February 13, 2024
MD1 Technical Data Sheet – 85000-155

1.02 MB March 18, 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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