MRC Global October 2017 InSight

How to Properly Size an Actuator

by Carlos Gamero, Engineering Manager, MRC Global


Choosing the Right Actuator Type
In our business, after a customer has selected the specific valve and actuator package, that’s when my team steps in to size the actuator properly. Selecting the correct actuator for the size and purpose of your valve is key but it’s only the first step. If the actuator isn’t sized by a knowledgeable and technically trained expert, the results can be disastrous or expensive.

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Understanding Norsok M-650

by Ingve Stangeland, Technical Manager, MRC Global


If you are involved in sourcing products for offshore or subsea applications, you have probably been introduced to the Norsok M-650 qualification.

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Defining Double Block and Bleed

by Greg Peterson, Executive Director - Midstream/Upstream Valves & Automation, MRC Global


A common question we hear from many of MRC Global’s customers concerns the definition of a double block-and-bleed valve. There is confusion because there are many interpretations of the term double block-and-bleed (DBB) when describing valve functionality. It seems that almost every end user and manufacturer has a different idea of what the term means for valve selection, which can result in the wrong specifications or valve type.

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We Know PVF, a Blog by MRC Global