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  2. Pentair - Wikipedia

    en.wikipedia.org/wiki/Pentair

    This marked Pentair's exit from the tool business. In 2005, Pentair bought some of the assets of APW for $144 million, including McLean Thermal Management, Aspen Motion Technologies, and Electronic Solutions, [21] all of which provide thermal management products [22] and integration services to the telecom, medical, and security industries ...

  3. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [1] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various ...

  4. Metropolitan Water Reclamation District of Greater Chicago

    en.wikipedia.org/wiki/Metropolitan_Water...

    In 2011, U.S. Senators Richard Durbin and Mark Kirk and Congressman Mike Quigley toured the Chicago area waterways and announced their support for the disinfection projects. In April 2012, Chicago Mayor Rahm Emanuel, former Illinois Governor Pat Quinn, and the U.S. EPA awarded the MWRD $10 million through the Illinois Jobs Now! capital program ...

  5. Henry Pratt Company - Wikipedia

    en.wikipedia.org/wiki/Henry_Pratt_Company

    The company provided 16 inch valves for the first electric generating station of any significant size in the city of Chicago, which was built by the Commonwealth Edison Company in 1903. [ 1 ] [ 2 ] Henry Pratt Company's main corporate office from mid-sixties was at 401 S, Highland Ave, Aurora IL 60506.

  6. Drain-waste-vent system - Wikipedia

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

    Air admittance valves (AAVs, or commonly referred to in the UK as Durgo valves and in the US as Studor vents and Sure-Vent®) are negative-pressure-activated, one-way mechanical valves, used in a plumbing or drainage venting system to eliminate the need for conventional pipe venting and roof penetrations.

  7. Sloan Valve Company - Wikipedia

    en.wikipedia.org/wiki/Sloan_Valve_Company

    The company was founded by William Elvis Sloan in Chicago, Illinois in 1906 with the introduction of the Royal flushometer, a valve to release a measured amount of water to flush a urinal or toilet. Initial sales were very poor: only a single Royal model flushometer was sold in 1906, and two in 1907.

  8. Relief valve - Wikipedia

    en.wikipedia.org/wiki/Relief_valve

    A relief valve DN25 on cooling water pipe from heat exchanger Schematic diagram of a conventional spring-loaded pressure relief valve. A relief valve or pressure relief valve (PRV) is a type of safety valve used to control or limit the pressure in a system; excessive pressure might otherwise build up and create a process upset, instrument or equipment failure, explosion, or fire.

  9. Pilot-operated relief valve - Wikipedia

    en.wikipedia.org/wiki/Pilot-operated_relief_valve

    A separate actuator on the piping releases pressure in the line if it crosses a threshold. This releases the pressure on the back of the seal, causing the valve to open. The essential parts of a PORV are a pilot valve (or control pilot), a main valve, a pilot tube, the dome, a disc or piston, and a seat. The volume above the piston is called ...

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