Best Water Shut-Off Valve Wrenches and Keys
Every homeowner needs a curb stop key and a meter key stored near the main shutoff — you cannot afford to hunt for them during a water emergency.
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Knowing how to shut off the water to any fixture or appliance is the first skill in home plumbing. Angle stops (the valves under sinks and behind toilets) and straight stops (behind dishwashers and refrigerators) can freeze in place after years without use. The right tool opens a stuck valve without breaking it.
Types of Shutoff Valves and Tools
- Valve key (curb stop key): A long T-handle tool for operating the water main shutoff at the street-level curb box. Every homeowner should have one accessible.
- Slip-joint pliers: For turning stuck angle stops under sinks. Pad the jaws to avoid crushing older valve bodies.
- Water meter key: A pentagon-socket tool for the utility shutoff at the water meter. Required in some municipalities to access the meter vault.
Top Picks
Oatey 38497 Water Meter Key
Fits standard 1-inch pentagon utility shutoff nuts at water meters. Essential for shutting off water at the meter when the main in the house cannot be located or is broken.
Reed Tool CSKM12 Curb Stop Key
48-inch T-handle with a 1-1/4-inch socket for round-head curb stops and a flat-blade for key-type curb stops. Long enough to reach curb boxes without getting on your knees.
FAQ
The angle stop under my sink will not turn. What do I do?
Apply penetrating oil (PB Blaster) to the valve stem and wait 15 minutes. Grip the valve body firmly with one hand and slowly rotate the handle counterclockwise. Never use force without stabilizing the valve body – you can crack the copper supply stub-out.
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