bonnet seal of Cameron BOP and T81 BOP

bonnet seal of Cameron BOP and T81 BOP

SUR-SEAL metal-to-metal, redundant nonelastomeric bonnet seal

When bonnet seals must be serviced to perform regular maintenance, you need a low-pressure gas backseat design to meet the low differential requirements of API Spec 6A PSL 4 specifications and to minimize risk to field personnel. Cameron SUR-SEAL seal, which can be incorporated into any bonnet design, delivers redundancy and resiliency, allowing field personnel to work safely at low differential pressures when servicing bonnet seals. The backseat design of a bonnet using SUR-SEAL seal incorporates a metal-to-metal seal with a redundant nonelastomeric seal. The seal designs work together to give the customer flexibility when operating in the harshest conditions as well as sealing at very low differential pressures.

Unlike other sealing materials that show a large decrease in strength at elevated pressures and temperatures, the specialized extrusion resistance of SUR-SEAL seal provides superior strength to withstand the extreme forces during HPHT operations and provides a reliable seal during low-pressure operations.

Master Series bonnet

Our Master Series bonnet assembly is used to adapt the GateMaster and PneuMaster actuators to the most popular gate valves. The bonnet assembly utilizes a mechanical spring-energized, nonelastomeric seal rather than a packing cartridge assembly. This seal is suitable for all material classes AA through HH and temperature classes K through X.

• manufacturing per material class AA through HH services for valves through 5,000-psi [345-bar] working pressure
• nonelastomeric seals that meet API requirements for temperature classes K through X: –75 to 350 degF [–59 to 177 degC]
• metal-to-metal stem fire seal
• external permanent drift adjustment
• threaded connections for actuator housing and shaft.
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