The AC R02 single-stage reducer is designed for car sequential injection systems. The device is used to reduce the pressure of liquid LPG flowing from the tank and turn it into a gas phase (vaporisation). 

Thermal insulation system
Reducer features include compact size and unique design comprising two aluminium castings and a cover made in the ACtherm system preventing gas cooling, thus, providing excellent thermal insulation. Due to its unique design, the AC R02 heats up very quickly, so switching to gas is also performed quickly. Therefore, no additional work of the controller, such as temperature correction, is required. Its high thermal efficiency and resistance to LPG contamination makes the reducer the best option when selecting autogas system components.

Pressure stabilizing system
The AC R02 reducer is equipped with the unique ACPress system that provides constant pressure  supplying injector rails in various road conditions. It should be also noted that stability is guaranteed regardless of inlet pressure at the gas cylinder.

Universal mounting system
It is quite new that the unit is fixed with a single, centrally located bolt only, enabling the reducer to be installed practically in any position. Reducer versatility is complemented with the  TriACflex elbow connector system that can be configured in any arrangement.
An elbow arrangement may be shown here with a caption: straight pipe connector, 90 and 60 degree elbows.


• small dimensions,
• compact design,
• excellent thermal efficiency,
• stable adjustments,
• resistance to LPG contamination,
• stable feeding independent of gas cylinder inlet pressure,
• low pressure drops at high loads,
• mounting with a single, centrally located bolt,
• elbow connector system.

Technical specification

  STAG R02
Material two aluminium castings
and a cover made of
hard and resistant
plastic material
Weight Reducer – 850 g
Complete kit – 1156 g
Dimensions [mm] 125x122x89
Max. inlet pressure 3 MPa
Outlet pressure Adjustable
0.9–1.5 bar
Coil power 12VDC
Solenoid valve power supply 11W
Solenoid valve AMP Superseal
Gas inlet diameter [mm] ∅ 6.0 Ml0x1
Gas outlet diameter [mm] ∅12
Water outlet diameter [mm] ∅16
Max. engine power 110kW/150KM
Approval E8-67R-01 6865
Vacuum pipe [mm] ∅4




Wymiary reduktora AC STAG R02 





Reducer temperature sensor Czujnik temperatury reduktora
Superseal 1,5 mm AC STAG R02 Superseal 1,5 mm
Nipple (union piece) AC STAG R02 nypel
Reducer mounting grip Uchwyt mocowania reduktora
Barrel AC STAG R02 Baryłka
Barrel clamp AC STAG R02 Docisk baryłki
Mounting elements AC STAG R02 Elementy mocujące
connector F-2,5
AC STAG R02 Konektor żeński F-2,5
Solenoid valve AC STAG R02 Elektrozawór
Solenoid valve accessories AC STAG R02 konfekcja elektrozaworu


Additionally on offer

Elbow Ø 12 AC STAG kolanko 12
Elbow Ø 16 AC STAG kolanko 16
Simple elbow Ø 12 AC STAG kolanko proste 12
Simple elbow Ø 16 AC STAG kolanko proste 16
oring Ø 12 AC STAG oring12


Mobile applications


Controllers LPG/CNG direct petrol injection

Controllers LPG/CNG - DIESEL


Injection rails LPG / CNG

Reducers LPG

Fuel injector emulator - Controllers LPG/CNG direct petrol injection

Fuel level emulator

Fuel pressure emulator


Switches petrol / gas

Fuel Level Indicators WPG

Timing Advance Processors

The pressure sensor





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