CNG reducers

CNG pressure regulation, model by model.

MIJO's CNG reducer range covers compact high-flow Sequential applications, conventional cars and three-wheelers, and turbocharged buses and trucks. Compare architecture, solenoid position, pressure, connections and capacity to identify the correct model.

Sequential Conventional

CNG reducer range

Sequential CNG reducers

Sequential CNG reducers transform high cylinder pressure into a stable, calibrated supply for the injector rail. Every MIJO Sequential CNG reducer shown here is approved to ISO 15500. Selection considers solenoid position, flow demand, engine output, working pressure and installation space.

01 · Sequential

ISO 15500

SR03 Compact

Model code · SR03

SR03 Compact is a two-stage Sequential CNG reducer built around an integrated high-pressure inlet solenoid. Its compact housing delivers very high gas flow while using substantially less installation space in crowded engine bays.

A broad flow range allows the same reducer family to serve applications from small passenger vehicles to large trucks. MIJO matches the working pressure, injector rail and calibration to the actual engine demand.

Key characteristics

Wide application rangeSmall passenger vehicles through large trucks.
Flow capabilityVery high flow across a broad operating range.
Solenoid positionIntegrated high-pressure inlet solenoid.
InstallationCompact housing for crowded engine bays.

Technical specifications

Configuration: Two-stage Sequential CNG
Dimensions: 99.6 (W) × 88.7 (D) × 123.9 (H) mm
Inlet pressure: 200–250 bar
Rated working pressure: 200 bar
First-stage pressure: 7–10 bar
Second-stage pressure: 1.5–7.0 bar
Lock-up pressure: 7–10 bar
Temperature range: −40°C to +120°C
Solenoid: Integrated high-pressure inlet
Flow characteristic: Very high flow · broad operating range
Application range: Small vehicles to large trucks
Approval: ISO 15500

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02 · Sequential

ISO 15500

SR03A Super

Model code · CNGSR03A SUPER

SR03A Super is a sturdy two-stage Sequential CNG reducer with an integrated high-pressure inlet solenoid. The inlet arrangement supports strong gas flow and positive gas shut-off in one robust assembly.

Its die-cast aluminium body accepts up to 260-bar inlet pressure and provides adjustable 0.90–2.60-bar outlet pressure for applications up to 250 HP. The final setting is matched to the injector rail and engine calibration.

Key characteristics

Solenoid positionIntegrated high-pressure inlet solenoid.
ConstructionSturdy two-stage die-cast aluminium body.
Outlet adjustmentAdjustable from 0.90 to 2.60 bar.
Application capacitySuitable for applications up to 250 HP.

Technical specifications

Weight: 1.95 kg
Dimensions: 142 × 92 × 140 mm
Body: Die-cast aluminium
Maximum inlet pressure: 260 bar
Outlet pressure: Adjustable 0.90–2.60 bar
Electrical: 12 V DC · 17 W
Inlet connection: Ø6 mm / M12×1
Outlet connection: Ø12 mm
Engine power: Up to 250 HP
Approval: ISO 15500

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03 · Sequential

ISO 15500

SR09 CNG

Model code · SR09CNG

SR09 CNG is MIJO's low-pressure-solenoid, two-stage Sequential CNG reducer. It is MIJO's most-produced and longest-serving CNG reducer, with a long service history across everyday Sequential installations.

The die-cast aluminium body accepts up to 260-bar inlet pressure and delivers adjustable 0.90–2.60-bar outlet pressure. Its established layout supports applications up to 250 HP when correctly selected and calibrated.

Key characteristics

Solenoid positionLow-pressure solenoid valve.
Service recordMIJO's longest-serving CNG reducer.
Production historyThe most-produced reducer in the MIJO lineup.
Application capacitySuitable for applications up to 250 HP.

Technical specifications

Weight: 1.68 kg
Dimensions: 144 × 123 × 154 mm
Body: Die-cast aluminium
Maximum inlet pressure: 260 bar
Outlet pressure: Adjustable 0.90–2.60 bar
Electrical: 12 V DC · 17 W
Inlet connection: Ø6 mm / M12×1
Outlet connection: Ø12 mm
Engine power: Up to 250 HP
Approval: ISO 15500

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CNG reducer range

Conventional CNG reducers

Three-stage Conventional CNG reducers regulate high-pressure gas for mixer-based engines. The internal pressure and flow configuration is selected to suit vehicle duty, aspiration and engine demand.

04 · Conventional

ISO 15500

CNGR01

CNGR01 is a three-stage electronic Conventional CNG reducer used in both cars and petrol three-wheelers. MIJO configures its internal pressure and flow characteristics for the target engine, so the same reducer family can serve very different vehicle duties.

The die-cast aluminium body is rated for up to 260-bar inlet pressure. CNGR01-140 and CNGR01-140 Plus versions cover applications up to 140 HP and above 140 HP respectively; the correct internal configuration is selected vehicle by vehicle.

Key characteristics

Vehicle rangeCars and petrol three-wheelers.
Internal matchingPressure and flow configured for the application.
ArchitectureThree-stage electronic Conventional CNG.
Capacity versionsCNGR01-140 and CNGR01-140 Plus.

Technical specifications

Weight: 2.26 kg
Dimensions: 196 × 167 × 105 mm
Body: Die-cast aluminium
Maximum inlet pressure: 260 bar
Electrical: 12 V DC · 17 W
Inlet connection: Ø6 mm / M12×1
Outlet connection: Ø18 mm
CNGR01-140: Up to 140 HP
CNGR01-140 Plus: Over 140 HP
Approval: ISO 15500

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05 · Conventional

ISO 15500

CNGR01 Turbo

Model code · CNGR01-TURBO

CNGR01 Turbo is a three-stage electronic Conventional CNG reducer developed for turbocharged engines. It is MIJO's dedicated Conventional reducer route for buses and trucks, where gas demand and load variation are higher than in light vehicles.

Its die-cast aluminium construction accepts up to 260-bar inlet pressure, with Turbo-140 and Turbo-140 Plus versions selected according to engine demand. MIJO confirms the reducer version and internal configuration for the actual vehicle.

Key characteristics

Vehicle rangeConventional CNG buses and trucks.
Engine typeDeveloped for turbocharged engines.
ArchitectureThree-stage electronic Conventional CNG.
Capacity versionsTurbo-140 and Turbo-140 Plus.

Technical specifications

Weight: 2.60 kg
Dimensions: 206 × 204 × 137 mm
Body: Die-cast aluminium
Maximum inlet pressure: 260 bar
Electrical: 12 V DC · 17 W
Inlet connection: Ø6 mm / M12×1
Outlet connection: Ø18 mm
Turbo-140: Up to 140 HP
Turbo-140 Plus: Over 140 HP
Approval: ISO 15500

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Next step

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