What is a direct-acting safety valve? What is a pilot-operated safety valve?
Date: 2026-04-20Views: 376
A direct-acting safety valve is a safety valve that uses a mechanical load, such as a weight, a lever-operated weight, or a spring, to counteract the force generated by the pressure of the medium beneath the disc.
A pilot-operated safety valve is a safety valve that relies on the discharge of medium from a pilot valve for actuation or control. The pilot valve itself must be a direct-acting safety valve that complies with standard requirements.
