HD05 Two-Stage CNG High Pressure Reducer Regulator
The HD05 is a two-stage pressure reducer for automotive CNG sequential injection systems. It reduces cylinder-supply pressure to the level required by the matched gas injection system. Confirm inlet ratings, outlet characteristics and capacity before selecting it for an engine.
This listing is for compressed natural gas. Do not assume LPG compatibility. Match the reducer with the specified injectors, sensors, connections and installation arrangement.
Technical Specifications
The following values are listed in the product information. Confirm their definitions and test conditions against the technical sheet for the supplied version.
| Model | HD05 |
|---|---|
| Fuel | CNG — compressed natural gas |
| Pressure Reduction | Two stages |
| Listed Maximum Flow | 88 Nm³/h; request reference conditions and inlet/outlet test pressures |
| Listed Second-Stage Outlet Pressure | 0.09–0.32 MPa; confirm pressure reference and adjustment conditions |
| Rated Inlet Pressure | Request the model-specific operating range |
| Listed Temperature Range | −40°C to +120°C; confirm operating and test conditions |
| Listed Electrical Supply | 12 V DC; confirm the powered component and permitted voltage range |
| Listed Dimensions | 15 × 10 × 14 cm; confirm dimension order and installation clearance |
| Listed Color Options | Black or silver; confirm availability |
| Warranty | 12 months, subject to agreed warranty conditions |
How Should Flow Capacity Be Evaluated?
The stated 88 Nm³/h requires defined measurement conditions. A normalized flow value alone does not establish supported engine power. Request the test basis before comparing reducers.
Reference state: Temperature and pressure used for the normalized volume.
Test gas: Gas type and composition where relevant.
Supply conditions: Inlet pressure and gas temperature.
Outlet conditions: Set pressure, permitted pressure drop and measurement point.
Operating conditions: Thermal conditions, flow duration and any heating requirements.
Engine selection must consider demand across the operating range. Provide rated power, maximum expected load and duty cycle. Passenger cars, buses and light trucks require separate application reviews.
What Does the Outlet Pressure Range Mean?
The listed 0.09–0.32 MPa range needs a pressure reference. Confirm whether it is gauge, absolute or differential pressure relative to the intake manifold. These values cannot be treated as equivalent.
Confirm the required outlet setting for the injectors.
Request adjustment instructions and permitted tolerance.
Check pressure behavior at idle and higher gas demand.
Confirm any manifold reference connection.
Verify compatible sensor range and calibration settings.
Reducer operation depends on its specific design. Read our CNG pressure reducer explanation for background information.
Will HD05 Match Your Conversion System?
Compatibility requires pressure, flow and connection checks. Do not select the reducer by vehicle category or external appearance alone.
Engine: Engine code, rated power, aspiration type and duty cycle.
Gas supply: Required inlet operating range and connection specifications.
Injection system: Injector model, pressure requirement and expected gas demand.
Electrical: Supply voltage, connector and control arrangement where applicable.
Installation: Mounting orientation, clearance and thermal requirements.
The reducer is one part of the conversion system. Check the ECU, injectors, sensors, filter, hoses and fittings using our conversion kit component guide.
Which Inspection Records Should Buyers Request?
Inspection records should identify the tested model and acceptance criteria. General machining or assembly claims do not establish pressure performance or leak-test results.
Leak testing: Test medium, pressure, duration, acceptance limit and result.
Regulation testing: Outlet behavior across stated inlet and flow conditions.
Pressure testing: Test method, pressure limit and pass criteria, distinguished from normal operating pressure.
Temperature testing: Test profile and operating state supporting the listed range.
Traceability: Product version, batch or serial reference and inspection date.
Compliance claims require applicable documentation. Request the standard title, edition, test report and covered model. Review our certification information and confirm destination-market requirements.
Additional Product Images
Confirm the supplied version against the quotation. Photographs do not replace dimensional drawings, connection specifications or inspection records.
Factory Processing
The workshop photograph provides manufacturing context. Request product-specific inspection records when assessing the ordered reducer.
Frequently Asked Questions
Is HD05 suitable for every CNG vehicle?
No universal compatibility is established by this page. Confirm inlet ratings, outlet requirements, capacity, installation space and the intended engine application.
Can the reducer be used with LPG?
This listing specifies CNG. Request a fuel-specific configuration for LPG. Do not assume the pressure components are interchangeable.
Does the listed flow guarantee a particular engine power?
Engine capacity requires an application review. Provide engine demand and operating conditions, then compare them with documented reducer performance.
What maintenance schedule applies?
Follow the instructions for the supplied reducer. Request inspection intervals, approved service procedures and spare-part references. Our gas system maintenance guide provides background information.
Are samples and OEM options available?
Sample and customization terms require quotation confirmation. Specify technical or branding changes, quantity and destination. Confirm evaluation costs, validation requirements and lead time.
Request an HD05 CNG Reducer Quotation
Send engine and system requirements for a matched offer. Include engine code, rated power, required inlet range, outlet pressure reference, injector model and order quantity.
Confirm supply scope before payment. Request connection details, accessories, dimensions, price, warranty terms, delivery lead time and available test documentation.
