4019119 | Genuine E-Controls® Electronic Pressure Regulator

An Electronic Pressure Regulator 4019119 (EPR) is a device that precisely controls the pressure of a gas or liquid using electronic signals, rather than relying only on mechanical springs or diaphragms like traditional regulators. Electronic Pressure Regulator is used to regulate pressure, control fuel/gas flow, provide shutoff, and enable more precise fuel metering Fits Kubota Engines WG1605 WG2503 WG3800 Fits Vermeer Zamboni JLG Industries Skyjack Snorkel Forklift

General Specifications

Purpose & Function

 1. Precise Pressure Control
Maintains exact output pressure regardless of fluctuations in input pressure or demand.
Especially important in systems like fuel injection, medical gases, or pneumatic tools where consistency is critical.

2.  Dynamic Adjustment (Real-Time Control)
Automatically adjusts pressure in real time based on:
Sensor feedback
Engine load
ECU (Engine Control Unit) signals
No need for manual adjustment.

3. Improved Safety & Reliability
Prevents overpressure or pressure drops that could damage equipment or cause unsafe conditions.
Built-in shutoff functionality in many designs (e.g., for fuel systems).

4. Better Efficiency & Emissions Control

In fuel systems (like LPG/CNG forklifts), it helps:
Deliver the right amount of fuel at the right pressure.
Improve combustion.
Reduce fuel waste and harmful emissions.

5. Electronic Integration
Can be controlled via:
Engine control modules (ECUs)
Programmable logic controllers (PLCs)
Sensors / feedback loops
Ideal for automated or smart systems.

• 6. Repeatability & Consistency
• Maintains consistent output over time and varying conditions, unlike mechanical regulators that may drift or wear out.

Signs of a Bad Pressure Regulator

• 1. Hard Starting or Failure to Start
• Engine cranks but doesn’t fire.
• Not enough fuel is reaching the engine due to pressure regulation failure.

• 2. Engine Stalling
• Sudden stalling during idle or under load.
• Caused by erratic or insufficient fuel/gas flow from a faulty EPR.

• 3. Rough Idle or Hesitation
• The engine surges, runs rough, or struggles to maintain a consistent idle.
• May be due to fluctuating pressure output from the regulator.

• 4. Loss of Power Under Load
• Engine runs but lacks power when accelerating or lifting (in forklifts).
• The EPR may not be increasing fuel pressure in response to higher demand.

5. Check Engine Light or Error Codes
Fault codes related to:
Fuel pressure
Fuel system lean/rich conditions
Communication loss with EPR (if electronically monitored)

6. Excessive Fuel Consumption or Emissions
Inaccurate fuel delivery leads to:
Rich or lean mixtures
Poor combustion
High emissions (and possibly failed emissions tests)

7. Unusual Noises
Hissing, clicking, or pulsing noises from the regulator itself may indicate:
Internal valve malfunction
Leaking diaphragm
Solenoid failure

• 8. Fuel Leaks or Smell (LPG/CNG Systems)
• Physical damage to the EPR housing, cracked seals, or failed fittings can cause gas leaks.
• Especially dangerous in LPG/CNG-powered machines.

9. No Voltage / Signal Response
If the regulator uses a signal from the ECU and it doesn’t respond to it, it may be:
Internally failed
Burned out solenoid
Broken wiring / connector issue (could mimic regulator failure)

About E-Controls

EControls is a leading manufacturer of advanced engine control systems, specializing in fuel delivery and pressure regulation technologies for industrial, off-highway, and alternative fuel applications. Founded in 1994, the company designs and produces components such as electronic pressure regulators, engine control modules, and fuel mixers, known for their precision, durability, and integration with modern engine systems.

With expertise in real-time embedded software, thermodynamics, and combustion modeling, EControls delivers innovative solutions that enhance fuel efficiency, emissions compliance, and engine performance. Their technologies are widely used in LPG/CNG-powered forklifts, generators, and other gas-fueled engines.