Longitudinal sight glass fitting type 335 PN 3

Product information

The ACI sight glass type 335 is a lightweight version that offers a significantly enlarged sight opening compared to our type 330 at rather low operating pressures of up to 3 barg. With this design, type 335 combines the functions of our round sight glasses, such as type 318, and our level indicators for container wall mounting type 330.

The fitting is equipped with a sight glass plate made of high-quality borosilicate glass similar to DIN 7081 (or according to customer specifications). It is securely enclosed between gaskets and firmly screwed to ensure permanent tightness and high pressure resistance.

Standardly, the sight glass type 335 is made of stainless steel 1.4571 (316Ti) – a material characterized by high corrosion resistance and durability. Upon request, the execution is also available in many other materials, tailored to specific requirements and applications.

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

If the maximum operating temperature of borosilicate glass DIN 7081 does not meet your requirements, or if the process conditions themselves pose a problem for the highly resistant borosilicate glass, a mica protection disk tailored for the fitting provides additional protection against temperature and steam. FEP or Halar® coatings additionally protect the borosilicate glass from aggressive chemicals or alkalis.