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2. Globe valve - Wikipedia

   en.wikipedia.org/wiki/Globe_valve

   The bonnet provides a leak-proof closure for the valve body. The threaded section of the stem goes through a hole with matching threads in the bonnet. Globe valves may have a screw-in, union, or bolted [4] bonnet. Screw-in bonnet is the simplest bonnet, offering a durable, pressure-tight seal. Union bonnet is suitable for applications

3. Washer (hardware) - Wikipedia

   en.wikipedia.org/wiki/Washer_(hardware)

   A washer is a thin plate ... as seal against water leaks are sometimes referred to ... without allowing the torque applied to the top nut to cause the bottom nut to ...

4. Leak - Wikipedia

   en.wikipedia.org/wiki/Leak

   Common types of leaks for many people include leaks in vehicle tires, which allows air to leak out and results in flat tires, and leaks in containers, which spills the contents. Leaks can occur or develop in many different kinds of household, building, vehicle, marine, aircraft, or industrial fluid systems, whether the fluid is a gas or liquid.

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Gasket - Wikipedia

   en.wikipedia.org/wiki/Gasket

   Gaskets allow for "less-than-perfect" mating surfaces on machine parts where they can fill irregularities. Gaskets are commonly produced by cutting from sheet materials. Given the potential cost and safety implications of faulty or leaking gaskets, it is critical that the correct gasket material is selected to fit the needs of the application. [2]

7. Hydrostatic test - Wikipedia

   en.wikipedia.org/wiki/Hydrostatic_test

   A hydrostatic test is a way in which pressure vessels such as pipelines, plumbing, gas cylinders, boilers and fuel tanks can be tested for strength and leaks. The test involves filling the vessel or pipe system with a liquid, usually water, which may be dyed to aid in visual leak detection , and pressurization of the vessel to the specified ...