Valve Function and Connection Selection
This brass valve is listed for CNG service with a nominal pressure of 20MPa and a DN4mm passage. Select the supplied version by its documented function, connection dimensions and installation requirements.
The valve function must match the intended position in the gas system. Confirm whether the selected model provides shutoff or another control function. Do not select it as a pressure-relief device without documentation specifying that function.
Main Technical Specifications
| Item | Specification |
|---|---|
| Product type | Brass valve for compatible CNG systems |
| Body material | Brass |
| Nominal pressure PN | 20MPa |
| Nominal diameter DN | 4mm |
| Connection descriptions | Both ends listed as Type Hole 6; verify dimensions and sealing details from the drawing |
| Integrated temperature-pressure safety device | Not fitted |
| Valve function and mounting position | Confirm from the selected model documentation |
What Should Be Checked Before Replacement?
Matching pressure and passage size alone is insufficient. Compare the existing component with the replacement drawing and installation instructions.
Function: Confirm the operating mechanism, permitted flow direction and required control behavior.
Ports: Check connection dimensions, thread details where applicable, and sealing geometry at each end.
Location: Establish whether the valve connects directly to a cylinder or is installed in a separate line.
Operating conditions: Confirm the documented pressure and temperature limits.
Installation: Check dimensions, mounting support and access for operation.
Type Hole 6 is an incomplete connection description. Request a dimensional drawing before selecting tubing, fittings or seals. Do not infer a 6mm tube size, crimp connection or cylinder-neck thread from this wording alone.
Factory and Processing Images
Frequently Asked Questions
Is this a pressure-relief valve?
A pressure-relief function is not established by the available specifications. Confirm the model function and any specified activation conditions before selecting a valve for pressure protection.
Can it replace the main cylinder valve?
Direct cylinder mounting must be confirmed from the connection drawing and cylinder requirements. The Type Hole 6 description does not establish compatibility with a cylinder neck.
What does the 20MPa value mean?
20MPa is the nominal pressure provided for this product. Verify the permitted service conditions against the delivered valve markings and documentation. It is not a stated relief setting, proof-test pressure or burst pressure.
Does it include a temperature-pressure safety device?
No integrated temperature-pressure safety device is specified for this model. The complete system protection arrangement must be established from the approved equipment design.
Can the brass body guarantee corrosion resistance or leak-free operation?
Material alone does not establish those performance claims. Seal compatibility, manufacturing quality, installation and operating conditions also matter. Request relevant inspection records for the supplied model.
Installation and Inspection
Installation requires the correct valve identification and connection instructions. A qualified technician should verify the intended function, mating components, sealing method and specified tightening requirements before assembly.
Commissioning must include the applicable functional and leak checks. Follow the system procedure and documented acceptance criteria. Do not modify the valve or substitute unapproved sealing components.
Inspection should cover the valve body, connections and operating condition. Follow the equipment maintenance schedule and service limits. Read our gas conversion system maintenance guide for related information.
Related Parts and Product Inquiry
Associated fittings must match the selected valve specification. Browse our autogas valves and spare parts when identifying the required system components.
Send the valve identification and connection details with your inquiry. Include markings, photographs, installation position, operating conditions and quantity. Contact us to confirm the valve function, drawing and quotation.
