Service
Gas Safety Shut-Off Valve Repair
An automatic gas safety shut-off valve only has one job: close fully and quickly when the interlock tells it to. If it sticks, buzzes, passes gas or drops out at random, it needs testing and repairing properly — not resetting.
- Closure timing and tightness tested, not assumed
- Coils and complete valves in stock, RP 3/4" to RP 2"
- Certificate issued after every repair or replacement
Faults we repair
| Fault | Risk | Repair |
|---|---|---|
| Valve passing gas when closed | Gas available with no ventilation proven | Replace the valve — the seat is the safety function |
| Slow to close | Gas continues after an emergency stop | Test closure time and replace if out of specification |
| Sticking open | Interlock cannot shut the gas off at all | Strip or replace; check for debris and pipe scale |
| Failed or burnt coil | No gas at all to the kitchen | Replace coil, investigate over-voltage and heat |
| Constant buzzing | Wear and imminent failure | Retighten or replace |
| Wrong orientation or size | Unreliable operation, pressure drop at full load | Refit or upsize correctly |
The test we carry out
- Coil resistance and supply voltage at the valve
- Closure on emergency stop, fan fail and power loss
- Tightness test of the downstream carcass
- Working pressure at the appliances at full gas rate
- Interlock function test and certification
If you can smell gas
- Turn off the gas at the emergency control valve and press the emergency stop button
- Do not switch anything electrical on or off, and do not use naked flames
- Open doors and windows, evacuate and keep people clear
- Call the National Gas Emergency Service on 0800 111 999
- Only then call us to make the installation safe and return it to service
Frequently asked questions
Can a safety shut-off valve be serviced?
It should be function-tested annually and the coil is replaceable, but a valve that passes gas or sticks is replaced — the seal cannot be safely repaired in situ.
How long should a valve last?
Ten years or more in a clean, cool position; far less in a hot, greasy plant room or where it cycles constantly because of interlock faults.
Do you carry replacements?
Yes — normally closed gas solenoid valves from RP 3/4" to RP 2" are stock items, so most repairs are completed on the first visit.
Will the kitchen be out of action for long?
Usually a couple of hours for a like-for-like valve change including testing and certification.
Related guides
Gas Solenoid Valves
Normally closed automatic shut-off valves and diagnostics.
Solenoid Valve Replacement
When to replace, like-for-like sizing and recommissioning.
Solenoid Valve Faults
Valve won't open, keeps closing, buzzing or leaking by.
Commercial Kitchen Gas Shut Off
How the automatic and emergency shut-off system should behave.
Servicing & Testing
Annual interlock testing, certification and planned maintenance.
Emergency Interlock Engineer
24/7 UK call-out when the kitchen has no gas and service is on.
Parts in stock — ready to fit
Held in UK stock and carried on our vans, so most jobs are fixed in one visit.
Replacement gas interlock systems
Merlin, Medem, Intelligas, S&S Northern
In stock today
Air pressure switches
Fan & gas proving pressure switches
In stock today
Gas solenoid valves
Normally closed safety shut-off valves
In stock today
Quick release gas catering hoses
Commercial ranges, bays & mobile catering
In stock today
Super universal thermocouples
Fits most commercial gas appliances
In stock today
Need a part fitted?
Same-day engineer dispatch with these parts on the van.
Gas Safe Registered
Commercial catering & plant
24/7 UK Response
Same-day emergency dispatch
Vetted Engineers
DBS checked for schools & care
Transparent Pricing
Fixed callout, quoted parts