Safety-level Split Isolation Valve

Core technology

● A complete sealing surface and line sealing technology are adopted to ensure sealing.

● A pair of gear meshing designs is adopted to ensure synchronous opening and closing of blades.

● The design of the spring-assisted opening mechanism is adopted to effectively prolong the service life of the sealing ring.

● Meeting the requirements of seismic class 1A


Parameter scale

Design pressure: 0.005 MPa

Shell leakage rate: ≤ 0.01 Nm3/h.m2 at 4000 Pa

Valve seat leakage rate: ≤ 400Nm3/h.m2 at 4000 Pa

Flow resistance coefficient: ζ ≤ 1

Seismic class: 1A

Design life: 40 years

Radiation-resistant dose: 4x104 Gy


Applicable industries

Used in nuclear island ventilation system of nuclear power station to prevent radioactive material from spreading.


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