Manhole sight glass type 325 PN 6/10/16

Product information

ACI manhole sight glasses of type 325 can be used to seal access and inspection openings on tanks, silos, and containers. In contrast to conventional manhole closures, type 325 is equipped with a sight glass fitting similar to DIN 28120. This allows for safe observation of processes within the container.

Our container sight glasses type 325 are made from high-quality stainless steel 1.4571 (316Ti) or 1.4404 (F316). The glass material used is the proven borosilicate glass according to DIN 7080 (or according to customer specifications).

The sealing of the fitting is done with flat seals adapted to your needs from a wide range of materials. This includes not only the common fiber material seals but also more advanced materials such as PTFE (Teflon®), NBR, novaphit® MST-XP, KlingerSil® C4400, and many other brand seals.

If the maximum operating temperature of borosilicate glass DIN 7080 does not meet your requirements, or if the process conditions pose a problem even for the highly resistant borosilicate glass, a specially adapted mica protective disk provides additional protection against temperature and steam. FEP or Halar® coatings additionally protect the borosilicate glass from aggressive chemicals or lyes.

As with other sight glass fittings, type 325 can be equipped with a type SGW sight glass wiper, SVI spraying devices, or lights upon request.