HXF7 with takeover fire arresting single exhalation valve

The HXF7 single exhalation valve with takeover fire resistance is a ventilation device fixed on the top of the storage tank. In order to ensure the normal state of the tank internal pressure, prevent the storage tank from being damaged by the overpressure in the tank, and also reduce the loss of the liquid in the tank by volatilization. It is suitable for storage of Class A oil products with a flash point of less than 28°C and Class B oil products with a flash point of less than 60°C, such as gasoline, benzene, kerosene, light diesel, heavy oil and other oil products and storage tanks of chemical products of the same nature.

According to the "Petrochemical Design Code for Fire Protection" (GB50160-92): "Fixed top tanks for Class A and Class B liquids should be equipped with flame arresters and breathing valves." The needs of the department. In order to solve the above problems, the Beijing Design Institute of Sinopec Corporation has designed and developed the HX series of new products. The product has the advantages of multiple types, complete specifications, compact structure, light weight, large ventilation, and small leakage. Products include single-exhalation valve, single-inhalation valve, breathing valve, various structural types can be combined with flame arresters, and can also be equipped with required connections.

Operating pressure and ambient temperature:

Exhalation pressure: +980Pa (operating pressure indicator can also be set by the user), operating environment temperature: -30～60℃

Working medium: gasoline, kerosene, diesel, aromatics, sulfur, air, etc., or other petrochemical materials,

The choice of fire resistance category is "HGJ21-89", and the choice of IIA or IIB is left to the user.

Manufacturing and inspection standards:

Refer to "SY/T0511.1-2010", "GB5908-86" and other standards for manufacturing acceptance.

Note: The flange connection adopts HG20593, PN1.0MPa, and can also be manufactured according to other standards such as HGJ, JB, ANSI-B16.5, JIS, etc. according to user needs.

maintenance:

In order to ensure the performance to achieve the purpose of safe use, inspection and maintenance should be carried out regularly (3 months);

1. Check whether the action of the pressure valve disc is flexible, and whether the contact surface of the guide rod and the valve seal ring is damaged.

2. When reinstalling the pressure valve disc, ensure that the contact surface is tight and the guide rod can rise and fall flexibly.

3. The anti-vibration material of the valve disc must be removed when the new one is used.

HXF7 size and technical parameters

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