How to use Square Brass Angel Valve 

To use a square brass angle valve, follow these steps:

Identify the Valve: Locate the square brass angle valve in your plumbing system. It is usually installed on the water supply line leading to a faucet, toilet, or other fixtures that require water control.

Shut off the Water: Before using the valve, make sure to shut off the water supply to the fixture you want to work on. Look for a separate shut-off valve located upstream from the angle valve and turn it clockwise to stop the water flow.

Determine the Flow Direction: The square brass angle valve has an inlet and an outlet. The inlet is where the water flows in, and the outlet is where it comes out at a 90-degree angle. Ensure you understand the flow direction to control the water correctly.

Open the Valve: To allow water flow, turn the valve handle counterclockwise or in the direction indicated for opening. As you turn the handle, the internal mechanism will lift, allowing water to pass through the valve.

Adjust Water Flow: Angle valves usually have a quarter-turn mechanism, so you can adjust the water flow by turning the handle partially or fully. Turn it counterclockwise to increase the flow and clockwise to reduce or stop it.

Close the Valve: To stop the water flow, turn the valve handle fully clockwise or in the direction indicated for closing. Ensure the valve is tightly closed to prevent any water leakage.

Check for Leaks: After using the valve, check for any water leaks around the valve or the connected fixtures. If you notice any leaks, make sure the valve is fully closed and that the connections are properly sealed.Remember, if you are unfamiliar with plumbing systems or are unsure about making adjustments, it's best to seek the assistance of a professional plumber to avoid any potential issues. Plumbing can be complex, and improper handling may lead to leaks, water damage, or other problems.