Overview of HXF4 type flame-retardant breathing valve with exhalation connection:

Characteristics and performance of the breathing valve with exhaled connection: The breathing valve with exhaled connection is a breathing function installed on the top of a fixed indoor storage tank. It can automatically adjust the pressure difference between the inside and outside of the oil storage tank, and its performance is reliable and stable, fully complying with the SY7511-87 standard of the Ministry of Petroleum Industry.

Applicable scope:

The flame-retardant breathing valve with exhaled connection is suitable for storing Class A oil products with a flash point below 28 ℃ and Class B oil products with a flash point below 60 ℃, such as gasoline, benzene, kerosene, light diesel, thick oil, and chemical product storage tanks with similar properties.

Specification and model:

Model A

Positive pressure: 355Pa Negative pressure: 295Pa

Model B

Positive pressure: 980Pa Negative pressure: 295Pa

Model C

Positive pressure: 1765Pa Negative pressure: 295Pa

Maintenance and upkeep of HXF4 type flame retardant breathing valve with exhalation connection:

In order to ensure the safe use of the breathing valve with exhaled connection, the breathing valve should be regularly inspected and maintained:

1. Check whether the pressure valve disc and vacuum valve disc move flexibly, and whether the contact between the guide rod and valve sealing ring is damaged.

2. When reinstalling the pressure plate and vacuum plate, ensure that the contact surface is tight and the guide rod can be lifted and lowered flexibly.

3. When using a new flame retardant breathing valve, the shock absorbers on the disc must be removed.