Opening a water pipe valve depends on the type of valve, but generally involves turning a handle or lever. For a ball valve, it typically requires only a quarter turn.
Types of Water Pipe Valves and How to Open Them
Different types of water pipe valves operate in slightly different ways. Here's a breakdown:
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Ball Valves: These valves have a handle that you turn a quarter turn (90 degrees) to open or close. When the handle is parallel to the pipe, the valve is open. When it's perpendicular, it's closed. Open ball valves slowly to prevent water hammer.
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Gate Valves: These valves have a round handle that you turn multiple times to raise or lower a gate inside the valve. To open, turn the handle counterclockwise. Gate valves are not meant for throttling flow; they should be fully open or fully closed.
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Globe Valves: Similar in appearance to gate valves, globe valves are designed for throttling flow. Turn the handle counterclockwise to open.
General Steps for Opening a Water Pipe Valve
Regardless of the type of valve, these steps are generally applicable:
- Identify the valve: Locate the valve you want to open.
- Inspect the valve: Check for any signs of damage or corrosion. If the valve is stiff, don't force it. Apply penetrating oil if necessary and allow it to soak in before attempting to turn the handle.
- Turn the handle: Depending on the valve type, turn the handle or lever in the appropriate direction to open the valve. Remember, ball valves only need a quarter turn.
- Monitor for leaks: After opening the valve, check for any leaks around the valve body or connections.
Important Considerations
- Slow and Steady: Always open valves slowly to avoid water hammer, which can damage pipes and fixtures. This is especially important for ball valves.
- Full Open or Full Close: Gate valves and ball valves are designed to be fully open or fully closed. Avoid using them to partially control flow, as this can damage the valve. Globe valves are the exception as they are designed for throttling.
- Safety First: If you're unsure about how to open a valve, consult a qualified plumber.
