What are the two types of pressure tests for plumbing systems?

The two types of pressure tests for plumbing systems are water pressure test and air pressure test.

### Water Pressure Test.

Water pressure test is a common method used to test plumbing systems for leaks and to ensure that the system can withstand the pressure of water flow. Here is a step-by-step guide on how to perform a water pressure test:

1. Shut off the main water supply valve to the plumbing system.

2. Connect a pressure gauge to a hose bib or the highest point in the plumbing system.

3. Open all the faucets in the system to release any trapped air.

4. Fill the system with water by opening the main water supply valve.

5. Allow the water to pressurize the system to the recommended pressure, usually between 40-80 psi.

6. Close all the faucets and observe the pressure gauge for any drops in pressure over a period of time. A drop in pressure indicates a leak in the system.

### Air Pressure Test.

Air pressure test is another method used to test plumbing systems, especially for new installations or repairs. It involves pressurizing the system with air instead of water. Here is a step-by-step guide on how to perform an air pressure test:

1. Shut off the main water supply valve to the plumbing system.

2. Remove all water from the system by opening all faucets and drains.

3. Connect a pressure gauge and air compressor to the plumbing system.

4. Pressurize the system with air to the recommended pressure, usually around 40-60 psi.

5. Close all the faucets and observe the pressure gauge for any drops in pressure over a period of time. A drop in pressure indicates a leak in the system.

Both water pressure test and air pressure test are essential methods for ensuring the integrity and safety of plumbing systems. By following these step-by-step guides, plumbers and homeowners can easily detect and fix any leaks in their plumbing systems.

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