The weight relief valve is used in the hydraulic system of the heavy pressure shut-off valve of the water power station speed regulating system. When the turbine accident or low oil pressure, governor closed water guide mechanism of operation failure in high speed hydrogenerator, hammer unloading valve, the valve under pressure to reverse, will relay for the two governor was also back to the oil chamber, close the valve hammer hammer closed water guide mechanism in gravity under the action of preventing the occurrence of accidents, to provide safe and reliable protection for the normal operation of hydroelectric generating units.

•  Throttling speed regulation is convenient and reliable
•  Integrated overspeed limiter with compact construction
•  Easy to install
•  Hydraulic buffer design is adopted to reduce movement noise
•  Steady movement and long service life