When installation, note flow direction of media of valve body. When connecting two flanges, add sealing mat. Then lock the bolt evenly.
安装时请注意阀体上标注介质流向，两法兰连接时必需加密封垫片，然后均匀锁紧螺栓。
2
When connecting flange, add sealing mat and lock connected bolt.
法兰连接时加密封垫后均匀锁紧联接螺栓。
3
Push up the electric connecting lines for the interior light and the control unit for garage door opener through the assembly openings on the front lock.