M5

CHEM-FEED® Multi-Diaphragm Metering Pump

The FLEXFLO® M5 Peristaltic Metering Pump delivers high-volume precision fluid metering, with energy efficiency and reduced maintenance needs. It minimizes pulsation by up to 80% thanks to its exclusive offset roller design and dual-channel tube assembly. The M5 is fully enclosed, easily configurable, and offers intuitive touchscreen controls, remote control signal options, and a large 5″ display for enhanced metering and transfer applications.

Technical Overview:

GPH
.0076 - 534
LPH
.0286 - 2021
mL/min
.4767 - 33683
Pressure
125 PSI (8.6 Bar)
Enclosure Rating
NEMA 4X, Kydex
Standards
cETLus, CE, NSF61
Control Methods
Manual, Remote Analog/Digital, EtherNet/IP, Modbus TCP/IP, PROFIBUS
Power Supply
115 to 240VAC-50/60Hz
Overview

Key Features

Benefits

  • Self-priming – even against maximum line pressure. By-pass valves are not required. Cannot vapor lock or lose prime. 30ft of suction lift. Gentle low shear pumping action.
  • Tube Failure Detection (TFD) senses tube rupture by detecting chemical in the pump head. No false triggering – Patented
  • Dual channel tube design for optimum performance and pressure capability
  • Exclusive offset-roller design reduces pulsation by up to 80%

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
  • 10,000:1 turndown ratio
  • NEMA 4X wash-down, chemically resistant enclosure
  • Heavy duty rotor means no flexing and increased accuracy with no metal springs or hinges to corrode.

Safety Features

  • Tube Failure Detection (TFD) senses tube rupture preventing hazardous chemical spills
  • Security programmable 6-digit password to prevent tampering
Performance Data

Output Table

Tube Material / Size Feed Rate MaxSpeed MaxPressure MaxTemperature Required Roller Assembly
GPH LPH ML/Min RPM PSI (bar) °F (°C) Code
Flex-A-Prene®
NPP .0534 – 534 .2021 – 2021 3.369 – 33690 75 30 (2.1) 185 (85) A5-MNPP-R
NLL .0286 – 286.2 .1083 – 1083 1.806 – 18056 75 50 (3.4) 185 (85) A5-MNLL-R
NHHL .0076 – 75.6 .0286 – 286 .4769 – 4769 75 65 (4.5) 185 (85) A5-MNHHL-R
Flex-A-Thane®
GKK .0154 – 154.2 .0584 – 583.6 .9728 – 9728 75 50 (3.4) 130 (54) A5-MGKK-R
Technical

Specifications

Maximum Working Pressure (excluding pump tubes)
  • 65 psig (4.4 bar)
  • NOTE: See individual pump tube assembly maximum pressure ratings.
Maximum Fluid Temperature (excluding pump tubes)
  • 185 °F (85 °C)
  • NOTE: See individual pump tube assembly max. temperature ratings.
Maximum Viscosity
12,000 Centipoise
Maximum Suction Lift
30 ft. Water, 0 psig
9.14 m, 0 bar
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
  • 230VAC/60Hz, 1ph
  • 220VAC/50Hz, 1ph
  • 240VAC/50Hz, 1ph
  • 230VAC/50Hz, 1ph
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 (UK)
Motor
Brushless DC, 1 hp
Motor Speed Adjustment Range
10,000:1 (0.01% – 100% motor speed) Max RPM = 75
Motor Speed Adjustment Resolution
  • 0.1% increments > 1% motor speed and < 100%
  • 0.01% increments < 1% motor speed
Display
5” touchscreen color LCD, UV resistant.
Display Languages
English, Spanish, French, German, and Portuguese selectable
Maximum Overall Dimensions
25.7”W x 30.1”H x 32.8”D
65.2W x 76.4H x 83.3D cm
Product Weight
178 lb.
80.7 Kg
Security
Programmable 6-digit password
Approximate Shipping Weight
180 lb.
81.65 Kg
Enclosure
NEMA 4X, Kydex
RoHS Compliant
Yes
Standards
cETLus, CE, NSF61
Order Information

Configure Pump

Purchase

Accessories

Purchase

Replacement Parts

ImageCatalog NumberDescriptionPriceBuy
Documentation

Downloads

Title Type Size Updated Download
Instruction Manual 7 files
M5 Instruction Manual – 80000-704 PDF 13.66 MB May 29, 2026 Download
M5 Instruction Manual [Français] – 80000-704 PDF 41.40 MB Mar 24, 2023 Download
M5 Instruction Manual – 80000-704 [Nederlands] PDF 25.39 MB Jun 20, 2025 Download
M5 Instruction Manual – 80000-704 [Español] PDF 18.91 MB Jun 20, 2025 Download
M5 Instruction Manual – 80000-704 [Português] PDF 19.40 MB Jun 20, 2025 Download
M5 Instruction Manual – 80000-704 [Deutsch] PDF 19.90 MB Jun 20, 2025 Download
M5 Instruction Manual – 80000-704 [Français] PDF 20.81 MB Jun 20, 2025 Download
Technical Data Sheet 7 files
M5 Technical Data Sheet – 85000-188 PDF 793.25 KB May 26, 2026 Download
M5 Technical Data Sheet [Français] – 85000-188 PDF 519.80 KB Mar 24, 2023 Download
M5 Technical Data Sheet – 85000-188 [Español] PDF 649.06 KB Mar 7, 2025 Download
M5 Technical Data Sheet – 85000-188 [Deutsch] PDF 631.40 KB Mar 7, 2025 Download
M5 Technical Data Sheet – 85000-188 [Nederlands] PDF 784.78 KB Mar 7, 2025 Download
M5 Technical Data Sheet – 85000-188 [Português] PDF 783.76 KB Mar 7, 2025 Download
M5 Technical Data Sheet – 85000-188 [Français] PDF 792.09 KB Mar 7, 2025 Download
Guides 1 file
Municipal Tubing Selection Guide – 85000-119 PDF 985 KB Aug 12, 2025 Download
Brochure 2 files
Municipal Products Brochure PDF 3.10 MB Mar 13, 2026 Download
FLEXFLO® Municipal Comparison Chart PDF 4.10 MB Mar 13, 2026 Download
Catalog 1 file
Municipal Catalog 2026 – 80000-708 PDF 13.09 MB Jul 2, 2026 Download
Engineering Specifications 1 file
M5 Engineering Specifications DOC 853.00 KB Jan 21, 2025 Download
Firmware Update 2 files
FLEXFLO Pump EDS File ZIP 11 KB Feb 21, 2024 Download
FLEXFLO Pump GDS File ZIP 2 KB Feb 21, 2024 Download
Replacement Parts List 1 file
M5 Replacement Parts List PDF 1.45 MB May 8, 2026 Download
Sales Brochure 1 file
Municipal Products Brochure PDF 3.10 MB Mar 13, 2026 Download

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