Product features：
The flat flange sight glass is suitable for peeping devices of petroleum, chemical and other industrial equipment to observe the operation of materials inside the equipment.
The material of flat flange sight glass is stainless steel, carbon steel PVC, etc.
The maximum operating pressure is 25kgf/cm2, and the allowable medium temperature is 0~200℃.
The glass material of the flat flange sight glass is tempered glass.
The gasket of the flat flange sight glass adopts rubber or PTFE gasket.