Breathing valve working medium, operating pressure and ambient temperature

The breathing valve is a ventilation device fixed on the top of the storage tank to ensure the normal state of the pressure in the tank and prevent the tank from being damaged due to the overpressure or the vacuum caused by the overpressure or the vacuum, and also to reduce the liquid volatilization loss in the tank. According to China's "Code for Fire Protection Design of Petro-Chemical Industry" (GB50160-92), "A and B liquid fixed roof tanks shall be equipped with flame arrestors and breathing valves." Ono Co., Ltd. has developed a series of SB series of new products with complete specifications , Compact structure, light weight, large ventilation, small leaks and so on. Products are single-valve, single-suction valve, breathing valve, a variety of structural forms can be combined with the flame arrester structure, but also the preparation of the required take over. Working medium: gasoline, kerosene, diesel, aromatics, sulfur, air, etc., or other petrochemical materials, fire retardant category selection according to "HGJ21-89". Operating pressure and ambient temperature: Exhaust pressure: B, +980 Pa C, +1750 Pa D, +4 KPa E, +18 KPa Suction pressure: B, -295 Pa C, -295 Pa D, -0.5 KPa Specified) Ambient temperature: -30 ° C -60 ° C

Door Frame Cover

Adhesive door frame edges need to be selected according to the material, generally you can use instant glue, slow-dry glue, nail-free glue, UV shadowless glue, swelling glue, etc.

When repairing viscose, to avoid applying glue on a large area, you only need to divide the door frame into four equal parts, and point five points. The two ends and the middle must be glued, and then installed Go back and hold it for a few minutes, and after letting go, the door frame edge will not fall off.

Different glues have different effects, and you should choose and use them according to the material and specific conditions of the door frame edge.

The most convenient way is to use instant glue. After the glue is applied, it can stick together immediately, and the effect is relatively good. The effect is very good for metal and plastic parts. But this kind of glue is easier to paint, and it is easy to have white edges around it after a long time.

The filling effect of slow-drying glue is good, and it will not cause white fog, and at the same time, it will not appear embrittlement. The longer it is used, the better the adhesion will be, but the drying will be slower.

In the case of sticking wooden doors, you can use nail-free glue. Before using, clean the surface to ensure that the surface is free of oil and dust, and then use a sealing gun to squeeze out the glue.

UV shadowless glue belongs to two kinds of bonding. It is only effective if it is a transparent part. The bonding strength is also relatively good, and it dries quickly. After this glue is irradiated by ultraviolet rays, the reaction will be strong and the efficiency is very high. .

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