Sight glass fitting Type 394 female threaded
The ACI screwed sight glass Type 394 is designed with an internal thread on the connection side, facilitating easy mounting onto a corresponding external thread.
Similar to our other sight glasses, this fitting incorporates chemically highly resistant borosilicate glass to DIN 7080 (or similar), securely clamped between two high-quality stainless steel flanges, ensuring proven quality seals.
Our tank sight glasses of Type 394 are manufactured from high-quality stainless steel 1.4571 (316Ti), a material appreciated by our customers for years.
The fitting is sealed with flat gaskets tailored to your needs from a diverse range of materials. In addition to commonly used fiber gaskets (e.g. KLINGERSIL® C-4400), we offer PTFE (Garlock GYLON®, Frenzelit novaflon®), NBR, graphite (e.g. Frenzelit novaphit®), and various other branded gaskets for specialized applications.
If the maximum operating temperature of 280°C falls short of your requirements or if process conditions challenge even the highly resistant borosilicate glass, an FEP or mica protection screen specially adapted to the fitting provides extra protection against steam and aggressive chemicals, including alkalis up to a pH value of 14.
Similar to our other sight glass fittings, our Type 394 can be optionally equipped with SGW type wipers or lights.
