1. Casting body +PE float ball.

2. The air pipe head is used for all kinds of marine pipe systems for ventilation.

3. The casting parts should not have any quality flaw such as gas hole and cold shot and so on.

4. The inner and outer surface of the body shall be coated with epoxy rich zinc or according to the users' requirements.

5. After assembling, the product is to be carried out the water tightness test, according to the IACS P3 requirements. 

7. Flange standard: according to the user's requirements.