---
title: "Burner knob and valve rebuild cost"
description: "La Cornue burner knob and valve rebuild cost — brass wear parts on mechanical valves used several times a day for decades."
url: "https://la-cornuemiami.support/repair-cost/burner-knob-and-valve-rebuild-cost/"
date_modified: "2026-09-03"
Appliance type: "Cooktops and rangetops, Ranges, Rangetops"
---


# La Cornue burner knob and valve rebuild cost

### Why we work all of them

Every valve on your range has done the same number of years in the same kitchen air. When one has gone stiff the others are usually a season behind it, and getting to the manifold costs the same whether we assess one valve or six. So the visit works every knob, and the report says which are fine, which are marginal and which need doing — then you decide. It is the difference between one visit and three, and it is the reason this figure is not per valve.

What moves this figure

from $195, and every valve gets worked

A stiff valve is failing, not dry — it is not lubricated over

A knob that will not return to off is today's problem

How many valves

The labor of reaching the manifold is the same for one or four, so all of them are assessed.

Rebuild or replace

Residue can be cleaned. A galled taper cannot, and we say which.

Knob, bezel or stem

Sometimes it is not the valve at all, and that is cheap to establish.

Where the valve sits

A knob next to the plaque or the grill lives hotter and ages first.

A coastal kitchen reaches the stem behind the knob and works inwards.

Why we work all of them

Every valve on your range has done the same number of years in the same kitchen air. When one has gone stiff the others are usually a season behind it, and getting to the manifold costs the same whether we assess one valve or six. So the visit works every knob, and the report says which are fine, which are marginal and which need doing — then you decide. It is the difference between one visit and three, and it is the reason this figure is not per valve.

### It is only slightly stiff. Can it wait?

For a while, if it still shuts off completely and firmly. Not if it needs coaxing to off, and not if it has begun to feel gritty rather than firm — grittiness is metal on metal and it accelerates. The other argument is practical: a stiff valve gets forced, and a forced knob is how stems shear, which leaves a burner stuck on whatever setting it was last left at.

### The knob spins without turning anything.

Opposite problem, usually cheaper. A worn knob or a stripped stem, with a valve underneath that may be perfectly sound. Take the knob off and turn the stem gently — if it moves properly, it is a knob, which is an ordinary wear part on a range this age. Tell us which of the two you have, because we bring different things.

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