Flow Sight Glass Type 551R with Internal Thread and Rotor
The ACI flow sight glass, Type 551R, provides a threaded connection, cast body, rotor, and internal thread connection for various applications.The indicator rotor helps visualize flow in both clear and turbid media.
The sight glasses feature proven borosilicate industrial glass according to DIN 7080, ensuring high resistance to most media. For alkaline media and high temperatures, we recommend installing a mica screen to provide additional protection to the glass surface.
For effective sealing, we utilize reliable flat gaskets from well-established manufacturers. In addition to aramid fiber materials like KlingerSIL C4400, the flow sight glass Type 551R can be equipped with graphite sealants such as Frenzelit novaphit MST. Soft sealing materials like silicone, EPDM, and NBR are also readily available from the factory.
Type 551R is offered in various common steel and cast stainless steel alloys such as GG25 and 1.4408. Special materials like Hastelloy can be supplied upon request.
