1：
Suitable for upper extraction water heaters for gas distribution
2：
The air inlet is a flange for easy assembly
3：
The product is divided into two distribution chambers, each chamber can be equipped with three nozzles
4：
The first distribution chamber is normally open, and the second distribution chamber has a solenoid valve to control the gas on/off
5：
Adopting copper nozzles with high dimensional accuracy
6：
The product is equipped with a secondary pressure measuring port
7：
Compact structure and reasonable layout
