Surface safety valve | OilfieldHQ Glossary

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Note: Definitions provided on this website are for reference purposes only. Engineers and professionals should independently confirm all information using industry standards.

Surface safety valve

A Surface Safety Valve (SSV) is an automatic fail-safe closed valve fitted on the Christmas tree. It is hydraulically or pneumatically held open.

If control pressure is lost (due to an emergency ESD trip, fire, or high/low line pressure pilot trip), a spring forces the valve closed, shutting in the well.

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