A4
FLEXFLO® Peristaltic Metering Pump
Experience next-level chemical metering with the FLEXFLO® A4 Peristaltic Metering Pump. The A4 combines accurate metering at discharge pressures up to 125 PSI, intuitive icon-based touchscreen controls, and IP-rated M12 connection ports that protect against moisture, dust, vibration, and any temperature change.
A4 remote control signal options include Pulse, 4-20mA, Modbus TCP, EtherNet/IP, and PROFIBUS for enhanced supervision and automation for critical metering and transfer applications.
Technical Overview:
GPH
.01 - 158.5
LPH
.04 - 600
mL/min
.6667 - 10000
Pressure
125 PSI (8.6 Bar)
Enclosure Rating
NEMA 4X (IP66)
Standards
CE, cETLus
Control Methods
Manual, Remote Analog/Digital, EtherNet/IP, Modbus TCP/IP, PROFIBUS
Power Supply
100 to 240VAC-50/60Hz
Literature
A4 Literature
Instruction Manuals
A4 Instruction Manual – 80000-618
Technical Data Sheets
A4 Technical Data Sheet – 85000-100
Guides
Brochures
Catalog
3D Visualizer
Features and Benefits
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
- Optional dual channel tube design for optimum performance and pressure capability
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:
- 2 Year Warranty
- 2,500:1 turndown ratio
- NEMA 4X (IP66) 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
Optional Components Available:
- Mounting Extended Brackets (72000-380) – 1 Pair, SS, 4 SS Screws
What’s Included:
- A4 Peristaltic Metering Pump
- Two tube assemblies
- Discharge injection fitting with check valve
-
With “B” ½” hose barb and “M” M/NPT type connections:
- Suction strainer
- #5 hose clamp (“B” only)
- Tube installation tool
- Mounting hardware kit
- Junction box connectors
Output
| Tube Material / Size | Feed Rate | MaxSpeed | MaxPressure | MaxTemperature | Required Roller Assembly | ||
| GPH | LPH | ML/Min | RPM | PSI (bar) | °F (°C) | Code | |
| Flex-A-Prene® | |||||||
| NH | .01 – 28.5 | .04 – 108 | 0.7 – 1800 | 125 | 125 (8.6) | 185 (85) | A4-MNH-R |
| NHL | .02 – 28.5 | .07 – 108 | 1.2 – 1800 | 125 | 65 (4.5) | 185 (85) | A4-MNH-R |
| NK | .02 – 50.7 | .08 – 192 | 1.3 – 3200 | 125 | 80 (5.5) | 185 (85) | A4-MNH-R |
| NHH | .02 – 54.0 | .09 – 204 | 1.4 – 3400 | 125 | 100 (6.9) | 185 (85) | A4-MNH-R |
| NHHL | .02 – 54.0 | .09 – 204 | 1.4 – 3400 | 125 | 65 (4.5) | 185 (85) | A4-MNH-R |
| NL | .04 – 100.0 | .15 – 378 | 2.5 – 6300 | 125 | 50 (3.4) | 185 (85) | A4-MNL-R |
| NP | .06 – 158.5 | .24 – 600 | 4.0 – 10000 | 125 | 30 (2.1) | 185 (85) | A4-MNL-R |
| Flex-A-Chem® | |||||||
| TH | .01 – 25.4 | .04 – 96.0 | 0.6 – 1600 | 125 | 30 (2.1) | 130 (54) | A4-MTH-R |
| TK | .02 – 54.0 | .08 – 204 | 1.4 – 3400 | 125 | 30 (2.1) | 130 (54) | A4-MTH-R |
| TKK | .05 – 126 | .18 – 477 | 3.2 – 7950 | 125 | 30 (2.1) | 130 (54) | A4-MTH-R |
| Flex-A-Thane® | |||||||
| GH | .01 – 39.6 | .06 – 150 | 1.0 – 2500 | 125 | 65 (4.5) | 130 (54) | A4-MGH-R |
| GHH | .03 – 71 | .11 – 269 | 1.9 – 4480 | 125 | 65 (4.5) | 130 (54) | A4-MGH-R |
| GK | .02 – 55.5 | .09 – 210 | 1.4 – 3500 | 125 | 65 (4.5) | 130 (54) | A4-MGH-R |
| GKK | .04 – 100 | .20 – 378 | 2.5 – 6300 | 125 | 65 (4.5) | 130 (54) | A4-MGH-R |
Specifications
Maximum Working Pressure
- 125 psig (8.6 bar)
- Note: see individual pump tube assembly maximum pressure ratings.
Maximum Fluid Temperature
- 3/8” OD x 1/4” ID tubing connections: 130 °F (54 °C)
- M/NPT connections: 185 °F (85 °C)
- Note: see individual pump tube assembly max temperature ratings.
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)
Maximum Viscosity
- 12,000 Centipoise
Maximum Suction Lift
- 30 ft. Water at sea level (14.7 atm psi)
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 (UK)
Motor
- Brushless DC
Motor Speed Adjustment Range
- 2,500:1 (0.04% – 100%) Max rpm = 125 rpm
Motor Speed Adjustment Resolution
- 0.1% increments > 1% motor speed and < 100%
- 0.04% increments < 1% motor speed
Display
- 5” touchscreen color LCD, UV resistent
Display Languages
- English, Spanish, French, German, and Portuguese selectable
Security
- Programmable 6-digit password
Maximum Overall Dimensions
- 12-1/8”W x 15-1/4”H x 16-1/2”D (30.8W x 38.8H x 41.9D cm)
Product Weight
- 45.5 lb. (20.64 Kg)
Approximate Shipping Weight
- 50 lb. (22.68 Kg)
Enclosure
- NEMA 4X (IP66) wash-down, chemically resistant enclosure
RoHS Compliant
- Yes
Standards
- cETLus, CE
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Replacement Parts
| Image | Catalog Number | Description | Price | Buy |
|---|
Downloads
| Title | |||
|---|---|---|---|
|
A3 | A4 Brochure – 80000-713 |
6.18 MB | April 16, 2024 | Download |
|
A3 A4 Technical Data Sheet – 85000-098 [LEGACY] |
730 KB | February 14, 2024 | Download |
|
A3F A4F Instruction Manual – 80000-419 [LEGACY] |
2.86 MB | February 14, 2024 | Download |
|
A3V A4V Instruction Manual – 80000-463 [LEGACY] |
3.61 MB | April 15, 2024 | Download |
|
A4 Engineering Specifications |
868.00 KB | November 4, 2024 | Download |
|
A4 Instruction Manual – 80000-618 |
12.48 MB | May 5, 2025 | Download |
|
A4 Replacement Parts List |
519 KB | February 10, 2022 | Download |
|
A4 Technical Data Sheet – 85000-100 |
823 KB | June 23, 2025 | Download |
|
FLEXFLO Pump EDS File |
11 KB | February 21, 2024 | Download |
|
FLEXFLO Pump GDS File |
2 KB | February 21, 2024 | Download |
|
FLEXFLO® Industrial Comparison Chart |
3.31 MB | May 15, 2025 | Download |
|
Industrial Accessories Guide – 85000-179 |
994.07 KB | November 4, 2024 | Download |
|
Industrial Catalog 2025 – 80000-707 |
17.00 MB | May 16, 2025 | Download |
|
Industrial Products Brochure |
3.09 MB | May 9, 2025 | Download |
|
Industrial Tubing Selection Guide – 85000-120 |
0.98 MB | May 5, 2025 | Download |
|
New A4 M4 Roller Assembly |
8.69 MB | November 22, 2022 | Download |
|
Peristaltic Pump Tubing Brochure – 80000-726 |
3.75 MB | April 16, 2024 | Download |
|
Pump to Skid Adapter Kits – 85000-198 |
340.02 KB | August 6, 2024 | Download |
|
Tube Failure Detection (TFD) Brochure – 80000-724 |
2.31 MB | April 16, 2024 | Download |
