ISA Interchange

Welcome to the official blog of the International Society of Automation (ISA).

This blog covers numerous topics on industrial automation such as operations & management, continuous & batch processing, connectivity, manufacturing & machine control, and Industry 4.0.

The material and information contained on this website is for general information purposes only. ISA blog posts may be authored by ISA staff and guest authors from the automation community. Views and opinions expressed by a guest author are solely their own, and do not necessarily represent those of ISA. Posts made by guest authors have been subject to peer review.

All Posts

AutoQuiz: What are the Failsafe Positions for a Valve?

 

AutoQuiz is edited by Joel Don, ISA's social media community manager.

 

Today's automation industry quiz question comes from ISA's technical training course, Control Valve Mechanics and Operations from Analog to Digital. The course takes a deep dive into the control valve’s mechanical composition, actuation and positioning accessories, including a detailed study of digital valve controllers. Training is hands-on and lab intensive, and is designed to offer a real-world, working knowledge of valve mechanical configurations, valve operations and positioner calibrations.

 

Failsafe positions for a valve can be:

A) Fail Closed
B) Fail Open
C) Fail Last or Locked
D) All of the above

 

The correct answer is D, all of the above.

The actuator action and mounting position determine the fail state of the valve package.  The arrow on the stem of a two-way actuator shows if the valve/actuator package is a fail open or fail closed. On three- and four-way actuators the arrows show the failed paths. The letters “FO” (fail open) and “FC” (fail closed) are sometimes used in place of the arrows on two way valves. The letters “FIP” also are used to refer to a valve that Fails In Place.

failsafe points

Want to learn more about control valves? Sign up for ISA’s training course, Control Valve Mechanics and Operations from Analog to Digital.

 

About the Editor
Joel Don is the community manager for ISA and is an independent content marketing, social media and public relations consultant. Prior to his work in marketing and PR, Joel served as an editor for regional newspapers and national magazines throughout the U.S. He earned a master's degree from the Medill School at Northwestern University with a focus on science, engineering and biomedical marketing communications, and a bachelor of science degree from UC San Diego.

 

Connect with Joel
LinkedInTwitterEmail

AutoQuiz is edited by Joel Don, ISA's social media community manager.

Today's automation industry quiz question comes from ISA's new course, Control Valve Mechanics and Operations from Analog to DAutoQuiz20150529igital. The class, which is offered June 22-26, takes a deep dive into the control valve’s mechanical composition, actuation and positioning accessories, including a detailed study of digital valve controllers. The class is hands-on and lab intensive, and is designed to offer a real-world, working knowledge of valve mechanical configurations, valve operations and positioner calibrations.

Failsafe positions for a valve can be:

A) Fail Closed
B) Fail Open
C) Fail Last or Locked
D) All of the above

Quiz Bonus: Use coupon code JUNTS18 when you register for the course to get the class at 50% discount. Register at this page: https://www.isa.org/training-certifications/isa-training/instructor-led/course-descriptions/ts18/?utm_campaign=smm-training-TS18-Control-Valve-Mechanics-and-Operations-from-Analog-to-Digital-landingpage&utm_medium=referral&utm_source=blog

 

The correct answer is D, all of the above.

The actuator action and mounting position determine the fail state of the valve package.  The arrow on the stem of a two-way actuator shows if the valve/actuator package is a fail open or fail closed. On three- and four-way actuators the arrows show the failed paths. The letters “FO” (fail open) and “FC” (fail closed) are sometimes used in place of the arrows on two way valves. The letters “FIP” also are used to refer to a valve that Fails In Place.failsafe points

Want to learn more about control valves?  Sign up for ISA's new course, Control Valve Mechanics and Operations from Analog to Digital. Use the special quiz discount code JUNTS18 when you register for the course to get the class for half off. Register at this page: https://www.isa.org/training-certifications/isa-training/instructor-led/course-descriptions/ts18/?utm_campaign=smm-training-TS18-Control-Valve-Mechanics-and-Operations-from-Analog-to-Digital-landingpage&utm_medium=referral&utm_source=blog

 

Joel Don
Joel Don
Joel Don is an independent content marketing, social media and public relations consultant. Prior to his work in marketing and PR, Joel served as an editor for regional newspapers and national magazines throughout the U.S. He earned a master's degree from the Medill School at Northwestern University with a focus on science, engineering and biomedical marketing communications, and a bachelor of science degree from UC San Diego.

Related Posts

Protecting Electrical Terminal Blocks from Tampering

Electrical terminal blocks are a common sight in the automation world. Usually mounted on DIN rail in ind...
Anna Goncharova Nov 8, 2024 10:30:00 AM

How to Access ISA Technical Content

You Have Questions? ISA Has Answers. Serving up member-generated technical content related to standards, ...
Renee Bassett Nov 5, 2024 7:00:00 AM

Exploring Zero Trust in Operational Technology

Zero trust has become the top approach for IT security, guiding how organizations worldwide design their ...
Muhammad Musbah Nov 1, 2024 7:00:00 AM