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  2. Grinnell Mechanical Products - Wikipedia

    en.wikipedia.org/wiki/Grinnell_Mechanical_Products

    Grinnell grooved products include grooved couplings, grooved fittings, mechanical tees, valves, circuit balancing valves, copper systems, stainless steel systems, plain end systems, HDPE systems, PVC systems, G-PRESS systems, gaskets and spare parts, and preparation equipment, as well as accessories, such as strainers, tee strainers, suction diffusers, dielectric waterway transition fittings ...

  3. Anderson Greenwood Crosby - Wikipedia

    en.wikipedia.org/wiki/Anderson_Greenwood_Crosby

    Anderson Greenwood Crosby is a US manufacturing company that produces valves for industrial processes, including pressure relief and tank protection valves. The firm was established as Anderson Greenwood in 1947 in Houston, Texas by Marvin Greenwood, Ben Anderson, and Lomis Slaughter Jr to produce a light aircraft, the AG-14.

  4. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  5. Tyco International - Wikipedia

    en.wikipedia.org/wiki/Tyco_International

    Tyco International plc was a security systems company incorporated in the Republic of Ireland, [2] with operational headquarters in Princeton, New Jersey, United States (Tyco International (US) Inc.). Tyco International was composed of two major business segments: security solutions and fire protection.

  6. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Choke valve, Butterfly valve used to limit air intake in internal combustion engine. (Not to be confused with choke valves used in industrial flow control, above.) Clapper valve: a type of check valve used in the Siamese fire appliance to allow only one hose to be connected instead of two (the clapper valve blocks the other side from leaking out)

  7. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. Many industrial, military or otherwise professional tubes were also produced.

  8. Scott Air-Pak SCBA - Wikipedia

    en.wikipedia.org/wiki/Scott_Air-Pak_SCBA

    The valve assembly is the appliance which will make the connection between the cylinder and the hose (which will send the air to a pressure reducer). It is constructed of forged aluminum alloy, and is angled to reduce stress of the connection made between the high-pressure female coupling of the high pressure hose.

  9. Butterfly valve - Wikipedia

    en.wikipedia.org/wiki/Butterfly_valve

    Unlike a ball valve, the disc is always present within the flow, so it induces a pressure drop, even when open. A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is ...