Overview
The LMI A941-351SI dosing pump is a precision metering and dosing unit from Milton Roy engineered for chemical injection and metering applications. This microprocessor-controlled pump operates on 120VAC at 1.4A and delivers consistent 0.58 GPH flow rates at maximum 250 PSI. The pump features a PGC head and TFE diaphragm construction with 4FV and 1 ball check for durability and reliability in demanding industrial environments.
Key Features
- Microprocessor Control: Accurate dosing and repeatable performance for precise chemical metering
- 0.58 GPH Flow Rate: Consistent low-flow delivery at 250 PSI maximum pressure
- TFE Diaphragm: Chemical-resistant construction for extended service life
- PGC Head Design: Proven diaphragm pump head engineered for reliability
- Ball Check Valves: Ensures unidirectional flow and prevents backflow
- Compact Form Factor: Fits tight equipment and control panel installations
Technical Specifications
- Part Number: A941-351SI
- Manufacturer: LMI Milton Roy
- Input Voltage: 120VAC, single-phase
- Current Rating: 1.4A
- Flow Rate: 0.58 GPH
- Maximum Pressure: 250 PSI
- Pump Head: PGC
- Diaphragm Material: TFE (Teflon®)
- Valve Configuration: 4 fluid/1 ball check
- Control Type: Microprocessor
- Application Status: Discontinued model; available used/surplus
Typical Applications
The LMI A941-351SI is suited for:
- Chemical feed systems in municipal water treatment
- Industrial process dosing and metering
- Corrosive liquid injection and pH adjustment
- Laboratory and pilot plant chemical metering
- OEM equipment replacement in legacy systems
- Environmental remediation and batch mixing operations
Compatibility & Replacements
Compatible With
- 120VAC single-phase power supply systems (95–240VAC range typical for Milton Roy A-series)
- Industrial control panels and process skids using low-flow chemical injection
- Systems requiring 250 PSI maximum discharge pressure
- PGC-compatible diaphragm pump manifolds and heads
Replaces / Drop-In Replacement For
The A941-351SI is a direct replacement for identical Milton Roy model numbers. Before substituting with alternative models (such as A942 or A943 series variants), verify stroke length, head design, and control system compatibility with your system integrator. Part number configuration is critical—the “-351SI” designation is specific to this flow and electrical specification.
Works With
- Milton Roy A-series pump manifolds and mounting assemblies
- Standard 120VAC industrial control wiring and motor starters
- Diaphragm pump head assemblies using PGC design interface
- Chemical metering systems designed for TFE diaphragm construction
- Legacy industrial dosing and injection equipment
