Main Water Shutoff Valve Repair and Replacement
If your main shutoff will not turn, you have no way to stop water in an emergency. That is worth fixing before you need it, and it is one of the cheapest pieces of insurance available to a homeowner.
What to do right now
Do these first. None of them need tools or plumbing knowledge, and they limit what this ends up costing you.
- Do not force itOld gate valves seize with mineral deposits and the stem or the body can snap under force. A snapped main shutoff turns a scheduled repair into an emergency with no way to stop the water.
- Try it gently, twice a yearTurning it fully closed and open again every six months keeps it free. That habit is what keeps it working on the night you actually need it.
Does this need a plumber tonight?
- The valve has failed and water is escaping
- You cannot stop water anywhere in an active emergency
- The valve body is leaking under pressure
- A valve that is stiff but does still close
- A valve that weeps slightly at the packing nut
- A valve you have discovered is seized with no current emergency
Gate valves and why they seize
Most older Ogden homes have a gate valve on the main, and gate valves fail closed and open. Mineral scale builds on the gate and the stem, and after a decade untouched it will not move.
Utah's hard water is unusually good at this. A valve that was fine when the house was plumbed can be immovable twenty years later, and the homeowner will not know until the night it matters.
Ball valves, which are the modern replacement, use a quarter turn and a smooth bore. They are far less prone to seizing and they show their state at a glance from the handle position.
Replacing it
Replacing a main shutoff means the water has to be off upstream, usually at the meter or the street, which is coordinated with the utility rather than done unilaterally.
It is not a large job and it is not expensive relative to what it prevents. The right time to do it is when nothing is wrong, which is exactly when nobody thinks about it.
If you have a valve that is stiff, or if you have never tested it, that is worth a scheduled visit rather than a discovery at 2am.
What valve work costs
[PLACEHOLDER: PRICING] Pending from the client.
A planned replacement during normal hours is one of the cheapest jobs on this site and one of the highest value. An emergency replacement after a valve has snapped is neither.
Questions people ask about this
My main shutoff will not budge. What do I do now?
Do not force it. Identify your fixture valves so you have some control, and book a replacement. In a genuine emergency the utility can shut the supply at the street.
How often should I test it?
Twice a year is a reasonable habit. Close it fully, open it fully, and check nothing weeps afterwards.
Should I replace a working gate valve?
If it turns freely and does not leak, there is no urgency. If it is stiff, if it weeps, or if it has not been moved in years, replacing it with a ball valve is cheap insurance.
If that is not quite what you have
Not sure how urgent this is?
Describe what you can see and hear. We will tell you whether it needs someone tonight, and what to do in the meantime either way.
Or send it over
Four things and a photo.