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2. Pumping station - Wikipedia

   en.wikipedia.org/wiki/Pumping_station

   The unit is supplied with internal pipework fitted, pre-assembled ready for installation into the ground, after which the submersible pumps and control equipment are fitted. Features may include controls for fully automatic operation; a high-level alarm indication, in the event of pump failure; and possibly a guide-rail/auto-coupling/pedestal ...

3. Hydropneumatic device - Wikipedia

   en.wikipedia.org/wiki/Hydropneumatic_device

   Hydropneumatic pump controllers provide a Means of control for multiple fixed delivery volume, low cost low complexity pumps; to provide variable flow as required by small (say +/- 10 psi) pressure increase or decrease of a system. Means of control for pump unloading / recirculation against no pressure, without electric pressure switches.

4. Hubbell Incorporated - Wikipedia

   en.wikipedia.org/wiki/Hubbell_Incorporated

   One of the most successful and familiar today, was the duplex receptacle which is still found everywhere that electrical power is used. In 1901, Hubbell published a 12-page catalogue that listed 63 electrical products of his company's manufacture, and four years later he incorporated his enterprise as Harvey Hubbell, Incorporated.

5. Grinder pump - Wikipedia

   en.wikipedia.org/wiki/Grinder_pump

   Grinder pump station with fiberglass tank and stainless steel lid installed outside a home Grinder pump station with HDPE tank being installed. The grinder pump “station” consists of the pump, a tank, and an alarm panel. A pump for household use is usually 1 hp, 1.5 hp or 2 hp.

6. Float switch - Wikipedia

   en.wikipedia.org/wiki/Float_switch

   A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.

7. Control loop - Wikipedia

   en.wikipedia.org/wiki/Control_loop

   A control loop is the fundamental building block of control systems in general and industrial control systems in particular. It consists of the process sensor, the controller function, and the final control element (FCE) which controls the process necessary to automatically adjust the value of a measured process variable (PV) to equal the value of a desired set-point (SP).