Sentinel NTE-5 Safety Valve

Our Sentinel™ NTE-5 surface-controlled, tubing-retrievable safety valve (TRSV) is rated for working pressures up to 5,000 psi (34.5 MPa) and temperatures up to 300°F (149°C). The NTE-5 valve uses a nonelastomeric single-piston actuator, optional self-equalizing flapper, and metal-to-metal flapper closure seal to provide 100% well containment when closed. The surface-controlled emergency shutdown system supplies hydraulic control pressure to actuate the NTE-5 valve’s nonelastomeric piston rod to open and close the flapper. The NTE-5 valve is a fail-safe, normally closed valve that will protect production installations from uncontrolled flow if wellhead equipment is damaged in a catastrophic event. After shut-ins, the optional self-equalizing flapper design facilitates a rapid return to production, reducing operational downtime.

The NTE-5 TSRV is tested and certified to API-14A-V1 and manufactured in accordance with ISO-9001:2015 standards. Materials selection options are based on NACE MR-0175 compliance. 
The Sentinel NTE-5 safety valve has a full complement of accessory tools, including an exercise tool, lockout tool, and communication tool for contingency operations. 

We provide global service support for installation, field repair, and maintenance worldwide. Contact your NOV sales representative or application engineer to discuss your specific requirements.