“Many variations in valve and actuator dimensions and characteristics have come into play especially now that we have worldwide vendors,” said Paul Souza, training manager at AUMA Actuators in a presentation at the Valve Manufacturers Association Virtual Valve Forum in November 2020.
The issue is that assemblies are not currently treated as “engineered” items; they are often produced by slapping the actuator on the old (or new) valve specified by the piping requirements without much understanding of the specifics of the interactions between valve and actuator connections through the drive train (coupling).
Since the early days of water and wastewater treatment plants in the United States, municipalities and industries have continued to expand and upgrade existing plants and distribution infrastructure as well as build new facilities.
The new year presents several exciting opportunities for those who manufacture and work with valves, actuators and related products.
Most professionals in the valve industry are already familiar with the use of linear actuators to operate globe valves.
Actuators in the oil and gas industry operate many types of valves, and they must do so with great precision and accuracy.
Subsea development includes different types of activities such as exploration, drilling, completion and production.Subsea manifolds are the arrangement of piping, valves, connections, structures and the foundation used in the subsea production system to receive, combine and distribute the hydrocarbon fluid
Typically, electric actuator commissioning is performed when the actuator is installed at site.
Gears have a long history and have been used for many purposes throughout civilization.
The British Valve & Actuator Association (BVAA) is coming to the end of the second year of its innovative Future Leaders Program. “It is quite possibly the most rewarding activity of my career.” said BVAA’s Director & CEO, Rob Bartlett. “The program has had an amazing effect on all those involved in it.
This article aims to resolve the problems that can occur when high actuator torque has a negative effect on the stem of the valve in offshore service.
AIV, LP, a Houston-based global wholesale distributor of valves and actuators for the oil and gas, power generation, chemical, petrochemical, refining, pulp and paper and water treatment industries, has announced that it has acquired Zenith Supply.
After decades of confusion, the American Water Works Association (AWWA) has created new standards for actuator sizing that clear up some of the confusion and also provide guidance on where safety factors need to be applied.
The valve industry is made up of many types of valves that are used in countless types of applications, locations and service conditions.
A common misconception in our industry is that actuating a valve is as simple as putting the most cost-efficient actuator on top of your valve of choice, but the process is much more complicated than that.
Valve actuators deliver either linear or rotary force.
One of the most important components of an automated threaded stem valve is the ubiquitous stem nut, a relatively simple and unsophisticated mechanical device that converts the rotary motion of an actuator into the linear stem movement needed to open or close one of the many types of gate valves or sluice gates.
To better understand the actuators and controls in our water systems, we discussed the types and some of the considerations for sizing in the first part of this article, which appeared in the print version of VALVEMagazine and is posted here.
Editor's Note: This article is an excerpt from Cylinder and Vane Actuators and Control—Design and Installation, published by the American Water Works Association in 2015.
Electric actuators are vital for operating a wide variety of valves and are used in many industrial applications.
Once valves and actuators are installed and commissioned on site, the manufacturer’s involvement often lapses to an occasional service call.
Since August, 2015, when VMA’s 2016 Market Outlook event was held, there have been a few more bumps in the economic road for valve, actuator and control manufacturers, their suppliers, distributors and end users.
A valve, in its most basic form, consists of a body and an internal moving component (closure element), which shuts off or restricts flow through the valve.
Since the early days of valve actuator use, there has been a choice between powering the actuator with electricity or pressurized fluid.