Sizing and pressure drop
This short, three-minute video, "Control valve sizing basics,” covers press-drop definition and calculation, and shows how they’re important in control valve sizing calculations and selection.
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Single- and double-acting
This 15-page document, “Your complete guide to valve actuators,” covers types, failsafes, single- and double-acting, as well as pneumatics, hydraulics, manual and electric.
Partial stroke text demo
This six-minute video, “Partial stroke testing demonstration,” shows how safety instrumented systems (SIS) conduct periodic proof testing.
About springs for flows
This online article, “Guide to heavy-duty actuator springs and valves springs,” shows how springs in process valves and actuators are the “silent, systematic superheroes behind flow control of fluids.” It covers actuators types, in-the-field applications, and differences between valves and actuators.
Essential definitions
This six-minute video, “What is a control valve?,” cover basic concepts like actuators, valve bodies, linear and rotary motion, and pneumatic, electrical or hydraulic control.
Shutoffs and signaling
This six-minute video, “What is a control valve actuator and positioner,” covers shutoffs, signaling and positioners.
Selection, actuators and accessories
This 25-page e-book, “Comprehensive guide to valves, actuators and controls,” covers design and selection, actuators and automation accessories. They were developed from the book, Valve and actuator technology, by Wayne Ulanski.
Globe, gate, ball and butterfly
This 12-minute video, “Control valve types,” explains how ball, butterfly, diaphragm, gate, globe, needle, pinch, plug, relief and safety valves work, explains the advantages and disadvantages of each, and discusses rotary and linear motion designs.
Classic handbook turns 50
Now in its 6th edition, Emerson’s 355-page Control Valve Handbook includes 15 chapters on types, performance, accessories, selection, special and severe service, desuperheaters, steam conditioning, turbine bypass, installation and maintenance, standards, isolation, sustainability and safety instrumented systems.
Casting valves in Korea
This 16-minute video, “Manufacturing process for industrial valves,” demonstrates how Samyang industrial, process valves are produced at a 62-year-old cast valve plant in South Korea.
Checks and safety types
This 17-minute video, “Valves basic types and operation,” covers symbols, swing and lift checks, relief and safety.
Mostly recently
The 2021 version of this Resources guide on valves, actuators and positioners also features 10 useful items.
