Feedwater control valves play a critical role in boiler operation. One important parameter of their design is the pressure drop at the rated condition as well as off-design conditions. However, ...

Learning the basics can ease loop tuning frustration and ensure stability. During plant operations, it seems that tuning control loops is an ongoing task, which can be a continual frustration to ...

Posifa Technologies has announced the PMF82000 series of mass air flow sensors, designed to measure low air flow rates with ...

Flow is controlled by either throttling or diverting it. Flow is controlled by either throttling or diverting it. Throttling involves reducing orifice size until all of the flow cannot pass through ...

At the heart of most boiler combustion control systems (and most coordinated boiler/turbine control systems as well) is throttle pressure correction, usually applied by the "master controller." ...

[Editor's note: This is the second installment of a two-part series on head pressure control.] In part 1 of this article, on the fundamentals of head pressure control ("Fundamentals of Head Pressure ...

Sequential valve gate technology delivers notable manufacturing advantages, but implementation involves challenges. Here’s ...

A worksheet that calculates control valve installed gain can be part of any control valve selection process. For many years, the author has used, and promoted the use of, control valve installed flow ...

OSHA issues citations and penalties if businesses violate permissible exposure limits (PEL). PELs are legal limits designed to control employee exposure to hazardous substances in an eight-hour period ...