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 three distribution chambers, each chamber can be equipped with two nozzles
4：
The first distribution chamber is a normally open circuit, and the second and third distribution chambers each have 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
