#CONTROLS

Technical

Nuclear: A Partner in the Quest for Clean and Sustainable Energy

The nation’s nuclear energy industry has deep roots that have always been focused on reliability and safety.

Manufacturing

VMA Welcomes CGIS as a New Distributor/Channel Partner (Associate) Member

CGIS is a global supplier of high-performance valves, controls and automation.

Design

The Actuators That Drive Subsea Operations

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

Manufacturing

Recommended Practices (RP) Changing Engineering and Supplying of Assemblies

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).

Technical

Automating Old Sluice Gates with Electric Actuators

Since the early days of water and wastewater treatment plants in the U.S., municipalities and industries have continued to expand and upgrade existing plants and distribution infrastructure as well as build new facilities.

Insights

Online Control Valve Diagnostics in Today’s Cybersecurity World

The topic of cybersecurity usually brings to mind data breaches that impact financial or private information, stolen intellectual property or disruption of major events such as political elections.

MRO

Traceability

Traceability and testing of digital positioners (including the valve) is a key to process control accuracy, reliability and safety.

Education

Solenoid Valves: Direct Acting vs. Pilot-Operated

While presenting in a recent VMA Valve Basics 101 Course in Houston, I found myself in a familiar role: explaining solenoid valves (SOVs) to attendees. (I work with solenoids so much that one VMA member at that conference joked that I needed to be wearing an I Heart Solenoids t-shirt). During the hands-on “petting zoo” portion of the program, which involves smaller groups of attendees, one of the most frequently asked questions I get from people came up: What’s the difference between direct-acting and pilot-operated SOVs, and how do we make a choice?

Education

Essentials of Cybersecurity for Process Controls

Cybersecurity is one of the major risks facing the valve industry, and it is not a problem that can merely be solved by other parties besides the intended victim.

Technical

Force and Direction Controls for Valve Actuators

Valve actuators deliver either linear or rotary force.

Applications

The Role of Valves in HAZOP Studies

Process hazard analysis (PHA) is required by U.S.

Applications

Controlling Our Water Systems, Part II

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.

Applications

Controlling Our Water Systems

Actuators and controls are a critical process of how we move water through our supply and waste systems.

Education

Valves & Actuators 101 Precedes Valve World Americas Expo & Conference 2015

VMA is presenting a one-day version of its popular Valves, Actuators & Controls 101 educational program on July 14, the day before Valve World Americas Expo & Conference.

Technical

Inexpensive Safe Water Tapped by Correcting Control Valve Output

The error output from a control valve can come from a variety of sources: uncontrolled input pressure, uncontrolled input flow rate, inaccurate orifice size or turbulent flow through the system which causes irregularity of flow rates through the system.

Design

Regulators versus Control Valves: What’s the Best Fit?

The combination of North American shale fields that continue to fuel high levels of new domestic oil and gas projects and ongoing global efforts means the need for efficiency in instrumentation selection has never been higher.

Technical

The Rationale Behind Valve Characteristics

Back in the “early days,” we were taught that, to properly control flow, we should select a linear valve characteristic when the valve controls more than 25% of the piping system pressure drop at full flow.

MRO

Wireless Solutions Keep Close Watch on Valves

The number of valves and valve types that go into modern process plants today to precisely control operations is huge.

Applications

Reducing Compression Packing Friction in Valves

Compression packing is found in applications ranging from transmission of natural gas and water to caustics and high-temperature steam.

Applications

The Boom of Hydrogen Service

Hydrogen is very reactive and highly explosive, and it is composed of the smallest molecules known to man.

Technical

Emerson Integrates Valve Position Transmitter and HART 7 Communications Within its Digital Valve Controller

Emerson’s Fisher FIELDVUE DVC6200 digital valve controller series now incorporates a 4-20mA position transmitter that can also be configured as a discrete switch.

Education

Best Practices in Pressure-Relief Valve Maintenance and Repair

In their presentation at the Valve Repair Council Repair Meeting & Exhibition, Nov. 1 and 2, 2012, in Houston, Bob Donalson and Kevin Simmons of Pentair Valves & Controls shared valuable information about maintenance and repair programs for pressure-relief valves.

Technical

Rotork SVM Delivers Networked Solution for Increased Partial Stroke Test Functionality

The Rotork SVM (Smart Valve Monitoring) system has been selected to provide a networked solution for digital valve monitoring and partial stroke testing on a large scale oilfield installation in the Middle East.

Technical

Saunders® I-VUE Smart Valve Sensor from CRANE ChemPharma Flow Solutions

CRANE ChemPharma Flow Solutions is pleased to announce the launch of its new Saunders® I-VUE Smart Valve Sensor.

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