We Know PVF a Blog by MRC Global
  • Double Block & Bleed
  • Fugitive Emissions Standards
  • Segmentable & Piggable Fittings

Defining Double Block and Bleed

By Greg Peterson, Executive Director - Midstream/Upstream Valves & Automation,
April 11, 2017 Tags: Valves, Double Block and Bleed, DBB, DIB, Double Isolation and Bleed

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.

read whole story

Navigating the EPA's Fugitive Emissions Standards

By Ralph Chaney, Senior Director - Downstream Valves & Automation, Supply Chain Management
March 14, 2017 Tags: Fugitive Emissions, API 622, API 624, API 641, API Testing, Valve Packing

As a leading valve distributor, API fugitive emission standards are something MRC Global addresses on a daily basis. Compliance with these standards and the associated EPA standards are a vital part of the valve selection and sourcing process.

read whole story

Around the Bend - Segmentable vs. Piggable Fittings

By Dane Toone, Supply Chain Management Manager,
October 25, 2016 Tags: Fitting, Segmentable, Piggable, Elbows

Our industry has come a long way since the first wooden pipeline was built in 1862, which, at the time, was an upgrade from transporting oil in repurposed whiskey barrels and moved by horse drawn wagons. Advances in technology and best practice are necessary for our industry to operate more efficiently and safely.

read whole story