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The most common final control element in the process control industries is the control valve. The control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point. [1]
GD350X, GD350Y – 350 V/3...200 μA Corona voltage reference, all-glass wire-ended GD550W – 550 V, 1.5 J Discharge tube, e.g. for power relaxation oscillators , all-glass wire-ended GDT120M – 9 mA Gas-filled cold-cathode DC triode, one starter and a separate glow diode acting as an optical primer, miniature 7-pin base
The Dresser brand operates in more than 60 countries with four principal business segments: Measurement and Distribution Systems, Flow Technologies, Infrastructure Solutions, and Power and Compression Systems. It retains trade names of Masoneilan, Consolidated, Becker, Mooney, ROOTS, and Wayne fuel pumps.
Air-actuated control valves each with a 4–20 mA "I to P" converter integral to a valve positioner. In this example each positioner is comparing the valve steam travel against control signal, and applying any correction. The opening or closing of automatic control valves is usually done by electrical, hydraulic or pneumatic actuators. Normally ...
The vehicle fulfills the MSVS MilCOTS (Militarized Commercial-Off-The-Shelf) requirement. As of mid-July 2015, the MSVS SMP (Standard Military Pattern) vehicle had been chosen. [3] Starting in June 2010, 1,300 Navistar units replaced part of the MLVW fleet. [4] The civilian designation of the 7000-MV is Navistar 7400 SFA 6×6 and International ...
Gate valve, mainly for on–off control, with low pressure drop; Globe valve, good for regulating flow. Uses a cylinder movement over a seat; Knife valve, similar to a gate valve, but usually more compact. Often used for slurries or powders on–off control; Needle valve for accurate flow control; Pinch valve, for slurry flow regulation and control