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Shutoff Valve Replacement

Pedernales Plumbing replaces main and fixture shutoff valves that are seized or leaking.

01Shutoff valves

Which of These Is the Problem?

A shutoff usually gets discovered exactly when it is needed most.

A Valve That Won't Turn

A shutoff left untouched for years often corrodes or mineralizes in place, and by the time it is needed it may not turn at all — a problem usually discovered during a leak rather than before one.

A Valve That Weeps or Drips When Closed

A shutoff that lets water past even when fully closed has worn internally and is no longer reliable enough to stop water in an emergency.

No Shutoff at a Fixture at All

Older plumbing sometimes has no dedicated valve at a toilet, sink or washing machine, which means the whole property's main has to be closed for any work on that one fixture.

02How far to go

Just This Valve, or the Others Too?

One seized valve found during other work is often a sign the rest are the same age.

Just the One Valve

  • Only one valve is a problem
  • The rest turn and seal fine
  • A straightforward swap on its own

Worth Checking the Rest

  • Same age as the one that failed
  • Unused since the property was built
  • Cheaper to replace while access is open

Shutoff Valve Replacement

Talk to Pedernales Plumbing

Serving Round Rock, TX.

03Why they seize

Why a Valve Stops Closing

The same wear that makes a valve hard to turn is what keeps it from sealing.

A shutoff that is only ever left fully open collects mineral deposits and corrosion around its stem over years of sitting still, and the same buildup that keeps it from turning smoothly can also keep it from sealing completely once it does close. The problem is rarely visible from the outside; the valve looks the same as the day it was installed.

04If it won't close

When the Valve Won't Close

  1. Close the Next Valve Back

    If a fixture or main shutoff will not stop the water, the next valve upstream — another fixture shutoff, a whole-property main, or the meter's own valve — can usually be closed instead. Working backward toward the source keeps the water contained even when the closest valve has failed.

  2. Note Which Valve Would Not Close

    Knowing exactly which shutoff failed — main or fixture, and where — saves time once a plumber arrives, since replacing a seized valve is straightforward once the area is open, but locating the right one during an active leak is not.

05Questions

Questions About Shutoff Valve Replacement

What do I do if the shutoff valve won't close?

A shutoff that has seized in place is common in a valve untouched for years, and forcing it risks snapping the stem or cracking older fittings around it. A frozen valve is a routine replacement rather than a repair, and it is usually swapped for one that can be closed reliably again.

Is it worth replacing a shutoff valve before it's actually needed?

A valve that has not been operated in many years is a common find during other work, and replacing it while the area is already open is far simpler than doing it alone later, during an active leak, when the old valve is the one thing standing between the leak and the rest of the property.

What's the difference between a main shutoff and a fixture shutoff?

The main shutoff controls water to the entire property and is usually near the meter or where the line enters the building. A fixture shutoff sits at one toilet, sink or appliance and closes only that connection, so work on one fixture doesn't require closing water to the whole property.

How do I know if a plumbing problem is urgent?

Water that cannot be stopped, sewage coming up, no water at all, or a smell of gas: urgent. A drip, a slow drain or a running toilet: worth fixing soon, but not tonight. When in doubt, shut off the water to the fixture and ask.

What information helps when calling a plumber?

Where the problem is, when it started, what changed, whether the water is off, and the age of the fixture or heater involved. A photo of the problem and of any visible model label helps too.

Pedernales Plumbing

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