Technical condition requirements of removed recirculators

1. The exhaust gas recirculation device must be complete (throttle and throttle) .2. The housing can not be mechanically damaged - cracked or deformed.3. Flue gas recirculation fittings must be whole. 4. The exhaust gas recirculation can not be strongly corroded.5. The damper must be complete equipped with an EGR valve (lever and closing mechanism).