Autogas Pressure Regulator Tomasetto AT09 LPG Evaporator Reducer Control Pump

Autogas Pressure Regulator Tomasetto AT09 LPG Evaporator Reducer Control Pump is a component of the gas supply system, used in autogas installations to precisely reduce and stabilize gas pressure before it is delivered to the injection rail. As an LPG evaporator–reducer, it works with the control pump, ensuring proper operating conditions for the fuel system across a wide range of engine loads. This used unit is a solution for users looking for a proven component at a reasonable price, while maintaining correct system operating parameters.

Specifications and technical data

• SKU: AT09
• Mark: Unbranded
• Condition: Used
• OEM Part Number: AT09
• Substitutable numbers: AT09
• Category: Fuel Pumps & Sending Units

Purpose and function in the LPG system

The Tomasetto AT09 series reducer plays a key role in the gas installation, responsible for converting liquid LPG into the vapor phase and maintaining stable operating pressure. This allows the gas controller to precisely dose fuel, and the engine maintains proper performance both at idle and under higher loads.

This component works with the vehicle's gasoline system, integrating with the Fuel pumps and level sensors category in the context of the entire supply system. A properly selected and functional reducer reduces the risk of a lean or rich mixture, which translates into stable engine operation and predictable fuel consumption.

Construction and technical characteristics

The Autogas Pressure Regulator Tomasetto AT09 LPG Evaporator Reducer Control Pump is a diaphragm design, where gas pressure is regulated through a system of chambers and valves controlled by pressure differentials. This type of solution is widely used in modern LPG installations due to its good parameter repeatability and resistance to typical operating conditions in the engine compartment.

Key functional features include:

• gas pressure stabilization across a wide range of engine loads,
• adaptation for cooperation with electronic LPG installation control,
• integrated connection elements allowing for integration into the cooling circuit and gas lines,
• design allowing for service and potential regeneration (replacement of diaphragms, seals).

Such a solution allows for maintaining repeatable operating parameters of the installation, which is particularly important in vehicles used daily.

Condition, selection, and practical application

The offered reducer is a secondary market component, which means that before installation, it is worth verifying its tightness, the condition of the connectors, and any potential need to replace basic seals. In many cases, used Tomasetto reducers are popular choices as a base for regeneration, which allows for a very favorable cost-to-durability ratio.

The selection of this model for a specific LPG installation should take into account engine power, the type of gas controller used, and the cooling system configuration. In case of doubt, it is worth consulting a workshop specializing in the installation and service of gas systems to ensure proper compatibility and safe operation.

Integration with the fuel system and diagnostics

The Autogas Pressure Regulator Tomasetto AT09 LPG Evaporator Reducer Control Pump works in close cooperation with the gasoline system, fuel pump, and fuel level sensors, which is why any irregularities in engine operation on gas should be analyzed holistically. Symptoms such as idle fluctuations, power loss, or increased fuel consumption may result from both controller settings and the condition of the evaporator.

To better understand the dependencies between individual supply elements, it is worth reaching for specialized materials. A practical supplement to knowledge will be the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which describes the principles of diagnostics, component selection, and their operation.

Configuration expansion in the same group

If you are planning a comprehensive repair or modernization of the fuel supply area in your car and need other elements from the same group, such as additional pumps, power modules, or level sensors, check the available parts in the Unbranded Fuel pumps and level sensors category.