Product Description：
The B/T47017 pressure vessel sight glass standard was issued by the National Energy Administration on July 1, 2011 and implemented on October 1st of the same year.
The NB/T47017 pressure vessel sight glass standard is finally combined with the HGJ51-502-1986 pressure vessel sight glass HG/T21575-1994 lighted sight glass HG/T21505-1992 combination sight glass and other styles and into one style. And made Great improvements have increased the specs of DN200 sight glasses; increased the use pressure of some sight glasses; eliminated the sight glass flushing hole and adopted a flushing device in accordance with foreign standards; increased the specs of sight glasses with spotlights; added the mirror mark And transport packaging requirements.
Main technical parameters of NB/T47017 pressure vessel sight glass:
Main body material: carbon steel WCB, stainless steel 304, 321, 316, 316L.
Window material: tempered glass, tempered borosilicate glass, quartz glass.
Sealing material: nitrile rubber, polytetrafluoroethylene.
Working pressure (MPa): ≤2.5
Working temperature (℃): 0~200℃-1300℃
For industry；
Carbon steel flange sight glass. It is a kind of stainless steel sight glass used to observe the change of the medium in the container of chemical industry, petroleum, oil refining, food, cosmetics, medicine and other industrial equipment. The operator adjusts or controls the medium according to the situation displayed by the pressure vessel sight glass, so as to ensure that the medium in the vessel is always within the normal range to ensure the safety of production and the quality of the product.