【Features】:
1 . The structure of reducing pressure holes in the valve core is adopted.
2 . The stem height is the optimal length obtained through calculation and testing.
3 . The gasket is made of ceramic filling material with stable sealing properties.
4 . In order to reduce the heat loss of the valve body, especially to ensure the use of the valve at ultra-low temperature, the valve body is specially
designed to be light in weight and small in size.
5 . The long-shaft valve has a valve through which low-temperature fluid flows. The long stem is used to avoid the effect of external heat to keep the gland at normal temperature to prevent the performance of the cap seal from decreasing.
Design basis
Design standard GB12237-89
Structure length GB12221-89
Connecting flange GB / T 9113-2000 JB / T79-94
Test and inspection JB / T 9092-99
Notes When Use
1 . It should ensure that the pipe is blown clean before installation.
2 . When installing, make sure that the flow direction indicated by the arrow on the valve body should be consistent with the flow direction of the fluid.
3 . This valve has been degreased. Store and keep clean when installing.
4 . After the pipeline construction is completed, all the valves on the pipeline should be opened, and the residue in the pipeline should be thoroughly and thoroughly kept to ensure that the pipeline system is clean and free of debris.
5 . The installation system diagram with the oil-free requirements should be degreased.
6 . Slowly open and close during use.
7 . If the precision parts such as the valve disc, valve seat and valve stem are worn or damaged, it must be repaired and replaced in time.
8 . For parts such as gaskets and sealing materials, replace them with new ones each time.
