Purpose:

The valve is mounted on the top of the tank body or on the manhole cover of tank car. When loading and unloading oil, the valve can effectively adjust the pressure balance inside and outside the tank due to the pressure change caused by full-closed loading and unloading to ensure smooth loading and unloading. At the same time, the oil and gas are collected in time and recovered to the storage tank of the oil depot or the tank body of the tank car.

Material:
aluminum alloy, stainless steel

Structural characteristics:

The valve body is formed by one-time high pressure die casting, with high hardness, high strength, moderate spring hardness and high sensitivity.