Extraction Non Return Valve

Extraction non return valve also named as quick close non return check valve with side enter penumatic actuator or top enter pneumatic actuator. The function of extraction non reture valve is force valve close by outside force through single action or double action pneumatic cylinder within 0.5 second. Such type of check valve installed on the pipeline of steam turbine hgih pressure cylinder exhaust or each exhaust ID to protect turbine set from load shedding or opertaion failure. Extraction non return valve we provided with swing disc check valve type. Valve size is from 4" to 48" matching with pressure from class 150 to class 2500.