We Know PVF a Blog by MRC Global
  • 2017 Audit Lessons Learned
  • How to Size an Actuator - Part 4
  • How to Size an Actuator - Part 3

Lessons Learned During Manufacturer Audits in 2017

By Bob Smith, Director, Quality and Bob Krenzer, Manager, Quality
May 23, 2018 Tags: Quality Process, Manufacturer Identification, Approved Manufacturer List, Audit

One of the most common questions that MRC Global receives is how a manufacturer can be included on our Approved Manufacturer List (AML). It is not a quick or easy process. After an initial evaluation including commercial aspects and product testing, the final step towards earning a place on MRC Global’s AML is an on-site assessment of the manufacturer’s facilities.

That is where we come in. Both of us have more than 30 years of experience in the manufacturing and quality realm.

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How to Properly Size an Actuator - Part 4

By Carlos Gamero, Engineering Manager, MRC Global
September 27, 2017 Tags: Valve Automation, Actuation Sizing, Maximum Supply Pressure, Minimum Supply Pressure

Meeting Torque Requirements

As I have noted before, selecting the correct actuator for the size and purpose of the valve is important, but it’s only the first step in selecting the best overall valve automation solution. If the actuator isn’t sized by a knowledgeable and technically trained expert, the results can be disastrous and/or expensive.

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How to Properly Size an Actuator - Part 3

By Carlos Gamero, Engineering Manager, MRC Global
August 16, 2017 Tags: Valve Automation, Actuation Sizing, Maximum Supply Pressure, Minimum Supply Pressure

Identifying Fail Mode Specifications

Actuator fail mode is the position that the actuator takes after the control signal and/or the supply pressure is lost. This step is vital to the proper sizing of an actuator because if the wrong fail mode is specified, the actuator will not fail in the correct position when, often, people’s safety or the integrity of the system is in jeopardy.

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