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Safety-level Pneumatic Fast Isolation Valve

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Core technology

● The complete multi-grid seal ring structure is adopted to achieve seal leakage: ≤ 10 Nm3/h m2 at 4000 Pa.

● The design of the cross-shaped reinforcement link rod is adopted to ensure a safe position when the valve loses its power supply.

● The structure of eccentric valve shaft + tension spring is adopted to realize the combined movement of " rotation + translation" of blades.

● Meeting the requirements of seismic class 1A

 

Parameter scale

Design pressure: 0.005 MPa

Valve seat leakage rate: ≤ 10 Nm3/h m2 at 4000 Pa

Shell leakage rate: Zero at 4000 pa

Flow resistance coefficient: ζ ≤ 1

Seismic class: 1A

Design life: 60 years

Radiation-resistant dose: 4x104 Gy

 

Applicable industries

It is used in the ventilation system, fresh air, return air and exhaust pipes of nuclear island of the third-generation nuclear power station and the second generation (plus) nuclear power plant, so as to isolate medium of the system.

 

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