Structural features of q47h fixed forged steel high pressure ball valve

1. When the stagnant pressure in the valve cavity abnormally exceeds the preload of the spring, the valve seat retreats from the ball to achieve the effect of automatic pressure relief, and the valve seat automatically resets after pressure relief.

2. In case of fire or when the sealing ring of the valve seat is burned or softened due to abnormal temperature rise, under the action of spring and medium pressure, the spherical part of the support ring and the sphere form metal to metal contact, so as to achieve a temporary sealing effect and prevent the further expansion of the fire, which is in line with the provisions of API 6fa.

3. Ptfr packing and 0-ring double sealing ring are used for the sealing of the packing gland, which is especially suitable for gas media. The packing is installed in the packing disc, and the new SF type self-lubricating sliding bushing with low friction system can be used at any time to reduce the operating torque.

Q47h fixed forged steel high pressure ball valve product application:

The fixed forged steel high-pressure ball valve is suitable for long-distance pipelines and general industrial pipelines with Class 150 ~ 600Lb and working temperature <150 ℃. Special consideration has been given to the design of its safety and resistance to harsh environment, and it is suitable for water, oil, steam and other media.