Water Main Shutoff Valve Replacement in Denver, CO
The main shutoff is the valve you only think about during an emergency, which is the worst time to discover it will not close. Old gate valves seize in the open position, and when a pipe bursts you need a quarter-turn ball valve that works.
- Seized gate valves replaced with full-port ball valves
- Coordination with the water provider for a curb stop shutoff
- Every household member shown where the valve is
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What it is
Water main shutoff valve A water main shutoff valve is the valve that controls all water flow into a house from the water service line, and closing it stops water to every fixture in the home at once.
Knowing the exact location of this valve and confirming it still turns freely matters in Denver homes with older valves, because a valve that is seized shut when a pipe bursts turns a leak into a flood.
A valve that has not moved in twenty years will not move now
Multi-turn gate valves corrode internally and the stem packing dries out. Turning one after decades often snaps the stem or starts a leak at the packing nut. Replacing it with a full-port ball valve turns your emergency shutoff into something that actually shuts off.
- Quarter-turn operation anyone in the house can use
- Full port means no pressure loss through the valve
- Second valve after the meter for isolating the house
- Peace of mind during a burst or a remodel
Replace the main valve when
- The handle will not turn or turns without stopping the water
- Water weeps from the packing nut when you touch it
- It is an old multi-turn gate valve
- Water still runs at fixtures after the valve is closed
- You cannot find a main shutoff at all
What the replacement involves
- Locating the main and the curb stop before any work starts
- Coordinating a street-side shutoff where the house valve will not hold
- Full-port brass ball valve rated for the service line
- Replacing corroded galvanized nipple sections at the connection
- Adding a drain or second isolation valve when it makes sense
- Tagging the valve and showing the household how to use it
What to expect and how the work gets done
- 1
Locate
Find the interior main, the meter, and the curb stop at the street.
- 2
Isolate
Shut at the curb when the house valve is seized, coordinated with the provider.
- 3
Replace
Cut out the old valve, address corroded pipe, install a full-port ball valve.
- 4
Test and label
Pressurize, check for weeps, tag the valve, and walk the family through it.
Credentials, reviews, and company proof
- Colorado Master PlumberFixture and appliance work is permitted and code-compliant, not handyman work.
- Plumbing Contractor license 2110Licensed to pull permits and pass inspection on gas, water, and drain work.
- Serving Denver since 2006Two decades of Front Range water chemistry, altitude, and inspection practice.
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Main valve replacement cost factors
Whether the water can be shut off at the house or has to be shut at the street is the biggest variable.
Need help right now? 24/7 emergency plumbing service. Planning a larger repair? See financing options.
- Service line size and material at the valve
- Whether the curb stop must be operated by the water provider
- Corroded galvanized pipe that has to be replaced to make the joint
- Access, since crawlspace and tight mechanical rooms slow the work
- Adding a second isolation valve or a drain
- Emergency versus scheduled timing
Frequently asked questions
Licenses, credentials, and company proof
- Colorado Master PlumberLicense MP-18927
- Colorado State Plumbing ContractorLicense 2110
- Family Owned & OperatedServing Denver since 2006, 20 years
- Better Business BureauAccredited Business, A+ rating
- Angie's List Super Service Award2012 through 2017
- Serving Denver since 2006Residential and commercial properties across the metro
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Make sure your shutoff actually shuts off
Free assessment of your main valve.