AT03069 Murphymatic® Throttle Controller

The AT03069 Murphymatic Throttle Controller is a reliable engine-speed management solution designed to keep RPM stable under changing system demand. Built for pumping, irrigation, water management, and industrial applications, it ensures smooth throttle adjustments, consistent pressure or flow, and improved engine efficiency. Its slow, controlled response helps reduce fuel consumption, minimize wear, and maintain steady performance across a wide range of operating conditions.

11–28VDC Voltage

500mA Max Current

25in-lb Torque

7mA Standby

Key Features Section

Automatic RPM Adjustment: Continuously regulates engine speed by responding to real-time pressure, level, temperature, or load changes. This ensures stable system output without requiring manual throttle control.
Smooth, Controlled Movement: The throttle transitions gradually, preventing sudden jumps or surges that could damage pumps, pipelines, or system components.
Dual-Voltage Compatibility: Works with both 12V and 24V systems, making one model suitable for a wide range of engines and equipment.
High-Torque, Heavy-Duty Build: Designed to handle demanding environments with reliable performance and long service life.
Flexible Linkage Adjustment: Multiple linkage positions help match different throttle blocks, ensuring precise and consistent movement across various engines.
Supports Advanced Control Functions: When integrated with control units, it enables warm-up RPM, minimum and maximum speed limits, and preset running RPM.
Low Standby Power: Efficient design that minimizes battery drain, especially in remote or engine-driven pump applications.

Applications

Pumping and Water Distribution: Maintains consistent discharge pressure in pump-driven systems found in city water supply, rural water distribution, and booster stations.
Irrigation and Agriculture: Ensures smooth operation of sprinkler lines, hose-reel irrigation, and multi-pump setups by stabilizing pump speed under varying field conditions.
Waterflood and Oilfield Operations: Stabilizes injection pressure and maintains steady fluid levels in tanks, improving efficiency and reducing operator workload.
Wastewater and Sewage Systems: Helps maintain constant flow and pressure while managing fluctuating loads in treatment or disposal systems.
Engine Cooling and HVAC Systems: Regulates circulation pumps in multi-engine cooling loops or chilled-water HVAC applications where constant flow is required.
Industrial Fluid Handling: Useful for filling or emptying reservoirs with smaller engines, adjusting speed based on head pressure or load changes.

Technical Specifications

Engineered for precision. Built for the harshest environments on Earth.

Category	Details
Product Series	100 Series (MLP100, MRP100) and 300 Series (MLP300, MRP300)
Primary Function	Monitoring, Alarm Capabilities, and Engine Control Interface
Engine Compatibility	Designed specifically for Mechanical Engine Applications
Operational Voltage	Available in 12-VDC or 24-VDC configurations
Panel Style Options	Local Panel (MLP): Enclosed, Shock-Mounted / Remote Panel (MRP): Flat-Face Mount
Fault Diagnostics	Features analog gauges and/or First Out Annunciation (ST5/ST10) for critical alarms
300 Series Control	Includes a Local/Remote Toggle Switch for operational flexibility
Construction Material	Durable Polycarbonate
Control Features	Key Switch Start and Engine Stop Push Button
Max Current Draw	Up to 13 Amps (Panel dependent)