Gas valves play an important role in controlling and isolating the gas supply within commercial heating and gas systems. If a valve is not operating correctly, the cause should be established before repair or replacement work is carried out.
Alliance CFM provides commercial gas valve testing and fault diagnosis, assessing valve operation, associated controls and potential faults affecting the system.
Testing should reflect the type of valve, its purpose and the installation it forms part of rather than relying on the same approach for every system.
What Does Gas Valve Testing Involve?
Commercial gas systems can contain different valves performing different functions, so the checks required will depend on the individual installation.
Depending on the valve and system, testing may involve assessing:
- Valve operation and response
- Automatic shut-off operation, where applicable
- Associated controls and safety devices
- Electrical or control connections, where relevant
- Visible condition and signs of deterioration
- Fault codes or control messages
- Relevant parts of the wider gas system
The purpose is to establish whether the valve is operating as intended and whether further investigation, repair or replacement is required.
Signs a Gas Valve May Need Testing
A commercial gas valve or its associated controls may require investigation if there is:
- Failure to open or close correctly
- Repeated system shutdown
- An interlock or control fault
- Intermittent operation
- Visible damage or deterioration
- A fault identified during maintenance
- An unexpected change in system operation
These symptoms do not automatically mean the valve itself has failed.
The cause may relate to the valve, actuator, controls, electrical supply, interlock arrangement or another part of the system. Identifying the source of the problem before replacing components helps ensure the correct fault is addressed.
Commercial Gas Valve Fault Diagnosis
Where a gas valve does not respond as expected, the valve should be considered alongside the controls and safety devices that influence its operation.
For example, an automatic gas valve may remain closed because another condition within the control or safety system has not been satisfied. In this situation, the valve itself may be responding correctly.
Effective fault diagnosis establishes what is preventing the system from operating as intended before corrective work is recommended.
Gas Valve Testing and Gas Tightness Testing
Gas valve testing and gas tightness testing serve different purposes.
Gas valve testing assesses the operation and condition of a valve and where relevant, the controls associated with it.
Gas tightness testing is used to check the integrity of a gas installation and identify whether gas is escaping from the system.
Depending on the problem being investigated, different testing may be required. One should not be treated as a substitute for the other.
Does a Faulty Gas Valve Need Replacing?
Whether a gas valve requires replacement depends on what is causing the fault, the condition of the valve and associated components and whether an appropriate repair is possible.
In some cases, the problem may originate elsewhere within the system rather than with the valve itself. The correct approach is to diagnose the fault first and determine what work is required from the findings.
Gas Valves Within Safety and Interlock Systems
Some commercial gas valves operate as part of a wider safety or interlock system.
In these installations, the valve responds to signals from other controls or safety devices. If the required operating conditions are not satisfied, the system may prevent the valve from opening or cause the gas supply to shut off.
A fault within an interlocked system therefore requires the relevant controls and components to be considered together rather than assuming the gas valve is responsible.
Gas Valve Testing as Part of Commercial Gas Maintenance
Potential gas valve problems can also be identified during planned servicing or maintenance.
Where an issue is found, further testing can establish whether the valve is operating correctly or whether additional investigation is needed.
Taking this diagnostic approach avoids replacing components unnecessarily and provides a clearer understanding of what corrective work is required.
Arrange Commercial Gas Valve Testing With Alliance CFM
If a commercial gas valve is not operating as expected, an interlock or control fault has developed, or a potential problem has been identified during maintenance, Alliance CFM can assess the system and establish the appropriate next step.
To arrange commercial gas valve testing and fault diagnosis, call 0118 230 1268 or email contact@alliancecfm.co.uk to speak to our team.
