Definition(s)
Block Valve
Valve that is either open or closed; used to isolated equipment or pipeline sections.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Valve that is either open or closed; used to isolated equipment or pipeline sections.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards