1. The swing type check valve should be stored in a dry and ventilated room to prevent moisture, rain and rust.2, The storage opening and closing parts should be in the closing device, and should do the following work:a, The swing type check valve flap should be fixed in the open positionb. The inner mouth of both ends of the path is blocked by the foam board, and the port must be tightly closed with a stuffy cover to protect it from dust and rust, to keep the channel clean and the end surface flat;c, appropriate packaging protection, shockproof and anti-collision;d. The swing type check valve should be placed in a stable position with the pneumatic drive facing up and not subject to each other.3. Regularly check when standing for a long time. Every three months, check the dirt and rust on the two channels, the sealing surface, and the protection status of the welded joint. After wiping the dirt and rust, re-apply the anti-rust oil to protect it.8, The overall structure, simple and compact, beautiful appearance9, Long service life and high reliability.