18/44 Gas delivery
Viking Top-Burner Gas Valve
The valve behind each knob that meters gas to one burner and holds its lowest flame.
- Written by
- Hollis Yamada
- Works on
- Service technician — refrigeration and cooking
- Experience
- 21 years in the trade
- Published
Behind every knob
Each burner knob turns a valve of its own. Viking’s use and care guide for its open-burner ranges describes the control as a gas valve and an ignition switch in one, so turning it both opens the gas and starts the sparking. Down the valve’s hollow shaft sits a small screw that sets the lowest flame; the knob itself grips the valve stem.
How it wears
The slow failure is stiffness: after enough years the valve drags and the knob fights back. The rare, urgent one is gas slipping past a closed valve. When stiff valves turn up beside worn burners, weigh the options in stiff valves and pitted brass. Changing a single valve belongs to the ordinary range repair visit.
Signs and thresholds
| What you notice | The line it crosses | What happens next |
|---|---|---|
| Knob drags or turns in jerks | Stiffness that has grown over weeks or months | Valve serviced or replaced; never forced or oiled. |
| Lowest setting too tall, or the flame dies there | Cap seated flat and burner dry | Low-flame screw in the valve reset by a technician. |
| Any flame at a burner whose knob is off | Even once | Stop using that burner; the valve is replaced. |
| Smell of gas near one knob | Any smell at all | Leave the house; phone the gas utility or 911 once outside. |
What you can do yourself
- With the cooktop cold, turn each knob in turn and note which ones drag.
- Wipe spills off the panel with a barely damp cloth rather than spraying cleaner at the knobs.
- Never oil a knob or lean on one that will not turn.
- Stop there. Anything past this is a job for Viking Repair Issaquah — call (425) 920-9484.
When to call
Call when a knob gets harder to turn, when the lowest flame will not hold, or when a burner shows any flame with its knob off.
Call (425) 920-9484Asked about the top-burner gas valve
Can I spray lubricant into a stiff Viking burner knob?
Please do not. Spray runs onto the ignition switch behind the knob and toward the burner, and it never reaches the grease inside the valve. A stiff valve is serviced or swapped with the gas off, then leak-tested. Viking Repair Issaquah does that work; call (425) 920-9484.
What does a flame at a burner with its knob off mean?
Gas is getting past a closed valve. Viking's service manual reads a burner that flashes back with its valve off as a leaking valve and calls for a new one. Do not use that burner, and leave if you smell gas. Viking Repair Issaquah replaces it; call (425) 920-9484.
Does one stiff valve mean the whole cooktop is worn out?
Not on its own. Each burner has a valve of its own, bolted to the gas manifold, so one can be changed without disturbing the rest. Several stiff valves on an old range are a different question. Viking Repair Issaquah sets out both paths; call (425) 920-9484.
