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- Improving well performance and integrity

Master Surface Annulus Safety Valve (MSAS)

MSAS - Master Surface Annular Safety Valve
MSAS-G (Integrated in API gate valve)
MSAS-G (Integrated in API gate valve)
MSAS (Actuator and the SAS valve)



Gas lifted, gas vented or wells with sustained annulus pressure pose a considerable risk to personnel and facilities. In these applications annulus gate valves and ring gaskets are the primary well barrier. Gate valves provide only a single barrier, which can be breached upon impact or collision.


Regulatory and/or company requirements may demand mitigation for the associated risks.



The MSASTM, provides an additional independent barrier in the wellhead VR profile. The MSASTM is hydraulically operated and connected to ESD.

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