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  2. Diaphragm valve - Wikipedia

    en.wikipedia.org/wiki/Diaphragm_valve

    The most common diaphragm valves use pneumatic actuators; in this type of valve, air pressure is applied through a pilot valve into the actuator which in turn raises the diaphragm and opens the valve. This type of valve is one of the more common valves used in operations where valve speed is a necessity.

  3. 5 Signs It's Time To Replace Your Toilet, According To ... - AOL

    www.aol.com/5-signs-time-replace-toilet...

    A well-running toilet is essential to a bathroom that's clean, useful, and odor-free. But toilets aren't invincible. Like other parts of the home, toilets need intermittent repairs, especially to ...

  4. Plumbing fixture - Wikipedia

    en.wikipedia.org/wiki/Plumbing_fixture

    The visible water surface in a toilet is the top of the trap's water seal. Each fixture drain, with exceptions, must be vented so that negative air pressure in the drain cannot siphon the trap dry, to prevent positive air pressure in the sewer from forcing gases past the water seal, and to prevent explosive sewer gas buildup.

  5. Valve - Wikipedia

    en.wikipedia.org/wiki/Valve

    Pilot valves are valves which are used to control other valves. Pilot valves in the actuator lines control the supply of air or liquid going to the actuators. The fill valve in a toilet water tank is a liquid level-actuated valve. When a high water level is reached, a mechanism shuts the valve which fills the tank.

  6. Trap (plumbing) - Wikipedia

    en.wikipedia.org/wiki/Trap_(plumbing)

    This water creates an air seal that prevents sewer gas from passing from the drain pipes back into the building. Essentially all plumbing fixtures including sinks, bathtubs, and showers must be equipped with either an internal or external trap. Toilets almost always have an internal trap. A bottle trap, which can be unscrewed for cleaning

  7. Solenoid valve - Wikipedia

    en.wikipedia.org/wiki/Solenoid_valve

    While there are multiple design variants, the following is a detailed breakdown of a typical pilot-operated solenoid valve. They may use metal seals or rubber seals, and may also have electrical interfaces to allow for easy control. The diagram to the right shows the design of a basic valve, controlling the flow of water in this example.

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