Oval Tank Sight Glass Type 337 - PN 25
Longitudinal sight glass for level indication
Longitudinal Sight Glass Type 337 PN 25
The ACI rectangular level indicator Type 337 is an easy to mount fitting for the industrially proven borosilicate sight glass plates according to DIN 7081 or similar.
The industry norm DIN 7081 includes the use of sight glasses of different lengths in the “Transparent” and “Reflex” versions. Transparent glass means simple, smooth glass plates. This type can, should the operating conditions require it, be fitted with protective layers made of mica or other materials such as KEL-F. We recommend the reflex type, if operating conditions allow it, for use with clear, colourless liquids. Due to the grooves contained in this type, the liquid stage appears more clearly than in the transparent version.
Our tank sight glasses type 337 are made of the high-quality stainless steel 1.4571 (316Ti), which our customers have appreciated for years. Like most of our fittings, the Type 337 is available in a variety of materials on request.
The sealing of the fitting is done with flat gaskets adapted to your needs from an extensive range of materials, which, in addition to the widely used fibre gaskets, also offers more sophisticated materials such as PTFE (Teflon®), NBR, graphite and many branded gaskets. You finde mor information about gasket materials in our Help Center.
Detailed technical information about our tank sight glass type 337 is available further down this page.
¹ Optional materials:
1.0460 / 1.4301 / 1.4307 (F304L) / 1.4404 (F316L) / 1.4410 (Super Duplex) / 1.4435 (F316L) / 1.4462 (F 51) / 1.4529 (Alloy 926) / 1.4539 (Alloy 904L) / 1.4541 (F321) / 1.4547 (F44) / 1.4550 (F347) / 1.4571 (316Ti) / 1.4828 / 1.4841 / 1.4876 ( Alloy 800H) / 1.4878 / 1.7335 / 2.4068 (Alloy 201) / 2.4360 (Alloy 400) / 2.4375 (Alloy K500) / 2.4602 (Alloy C-22) / 2.4605 (Alloy 59) / 2.4610 (Alloy C-4) / 2.4816 (Alloy 600) / 2.4819 (Alloy C-276) / 2.4856 (Alloy 625) / 2.4858 (Alloy 825) / 3.7035 (Titan)