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  2. Active tip-clearance control - Wikipedia

    en.wikipedia.org/wiki/Active_tip-clearance_control

    Active clearance control (ACC) is a method used in large aircraft gas turbines to improve fuel efficiency during cruise. This is achieved by setting the turbine tip clearance at more than one operating point and contrasts with passive clearance control which sets it for only one condition and is explained below.

  3. Pentair - Wikipedia

    en.wikipedia.org/wiki/Pentair

    In 1988, Pentair agreed to acquire FC Holdings Inc., the holding company for Federal Cartridge and Hoffman Engineering, for $175 million in cash and the assumption of debt. Pentair would not hold Federal Cartridge for a long time, but the purchase of Hoffman Engineering was the start of a prosperous era of enclosures manufacturing for Pentair.

  4. EN 417 - Wikipedia

    en.wikipedia.org/wiki/EN_417

    Pierceable gas cylinder Gas cylinder with Lindal B188 valve.. EN 417 is a European Standard concerning non-refillable metallic cartridges for liquefied petroleum gases.The standard specifies material, construction, inspection and marking requirements for cartridges with or without a valve, for use with portable appliances which comply with the requirements of EN 521.

  5. Setpoint (control system) - Wikipedia

    en.wikipedia.org/wiki/Setpoint_(control_system)

    A setpoint can be any physical quantity or parameter that a control system seeks to regulate, such as temperature, pressure, flow rate, position, speed, or any other measurable attribute. In the context of PID controller, the setpoint represents the reference or goal for the controlled process variable.

  6. 120×570mm NATO - Wikipedia

    en.wikipedia.org/wiki/120×570mm_NATO

    420 mm at 1000 m, [7] defeat the NATO Single heavy target at 8000 m and the Triple heavy target at 7000 m or 8400 m Use the same penetrator as the OFL 105 F1 105 mm APFSDS in a larger sabot. Upgraded with Israeli-style steel fins instead of aluminium in 1987. [8] DM23 Germany: Rheinmetall 1982 [9] 884 mm 457.7 mm ⌀ 32 × 360 mm 12:1 Tungsten ...

  7. Ceramic valve - Wikipedia

    en.wikipedia.org/wiki/Ceramic_valve

    A ceramic valve is a valve with ceramic trim, ball, seat, disc or lining. A carbon steel or stainless steel body is used to protect the ceramic trim from being damaged by sudden thermal or mechanical shock. Advanced ceramics are used in the manufacture including alumina, [1] zirconia and silicon nitride.

  8. Pressure-balanced valve - Wikipedia

    en.wikipedia.org/wiki/Pressure-balanced_valve

    The pressure-balanced shower valve compensates for changes in water pressure. It has a diaphragm or piston inside that reacts to relative changes in either hot or cold water pressure to maintain balanced pressure. As water pressure drops on one supply line, the valve reduces the pressure in the other supply line to match.

  9. Fountain pen - Wikipedia

    en.wikipedia.org/wiki/Fountain_pen

    A fountain pen is a writing instrument that uses a metal nib to apply water-based ink, or special pigment ink—suitable for fountain pens—to paper.It is distinguished from earlier dip pens by using an internal reservoir to hold ink, eliminating the need to repeatedly dip the pen in an inkwell during use.