Type 337 - PN25

Material: Base and top frame:  1.4571; 1.4404, 1.4462, RSt 37-2 / H II / Other materials on request Screws:  A4-70 Seals: depending on the application Glass:  Reflections -or- Transparent glass according to DIN 7081 or DIN 8903 Shape:  Rectangular Sight Glass as level indicator for visual inspection of tanks, boilers and silos Nominal size: size from 140 mm up to 1000 mm  Other sizes on request Nominal pressure: PN 16 or PN 40 For operating pressures up to max. 35 bar depending on the model Temperature:  temperature: 100 ° C or 243 ° C depending on the glass and seal selection. Special Feature: Lloyd’s Register Design Approval available Options: Optional versions are possible. Gasket selection: PTFE (200°C) FKM (200°C) NBR (100°C) C4400 (150°C) Silicone (200°C) EPDM (140°C) Graphite (320°C) Installation instructions: After welding in the base flange, check whether the sealing surfaces have warped! If necessary, rework must be carried out. The operating pressure does not apply to the base frame, which must be checked together with the pressure device according to AD data sheet B9! BL = overall length / SL = visible length BL SL Concealed view Kg(16 bar) Kg(35 bar) 140 79 0 2,8 3,4 170 124 0 3,2 4,0 220 174 0 4,0 5,0 250 204 0 4,6 5,7 300 264 0 5,3 6,7 310 264 0 5,6 7,0 350 304 0 6,3 7,8 370 324 0 6,6 8,2 400 354 0 7, 8,9 500 454 1x46 9,1 11,4 600 574 1x46 10,7 13,4 620 574 1x46 11,1 13,9 700 654 1x46 12,5 15,7 740 694 1x46 13,2 16,5 800 74 1x46 14,2 17,8 930 884 2x46 16,7 20,9 1000 954 3x46 18,2 22,8   SHORT DESCRIPTION - SIGHT GLASS LEVEL INDICATOR The ACI level indicator Type 330 is an easy to mount fitting for the industrially proven borosilicate sight glass plates according to DIN 7081. The base flange of Type 330 is set into the wall of a container or pipe and is fixed all-round with a welding seam. The base flange has an indentation for glass and seals, which are held by a cover flange. Type 330 only needs a very low torque for the fixing screws, whilst still achieving very reliable sealing. Type 330, like most of our fittings, is available in a range of materials, including standard types of container steel such as S235, or standard stainless-steel alloys such as 1.4571 or 1.4404, but high-performance materials such as Hastelloy or duplex alloys are available on request. For the sealing, we use tried and tested high-quality flat seals from well-known manufacturers such as KlingerSIL C4400 or novaphit MST. It is also possible to supply pure PTFE seal plates and soft seals such as NBR or EPDM directly. 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 meniscus in the liquid phase can be seen clearer than with the transparent variety. Read on for technical data and detailed views.

Material: Base flange:  1.4571, 1.4404, 1.4435, 1.4462, 1.4539, 1.4541, 2.4602, 2.4610, P265GH, Alloy , Super Duplex Cover flange:  1.4571, 1.4404, 1.4435, 1.4462, 1.4539, 1.4541, 2.4602, 2.4610, P265GH, Alloy , Super Duplex Bolts:  DIN 912, A4-70, or special materials Glass plates:  Borosilicate glass acc DIN 7081 Soda lime glass acc. To DIN 8903 Sealing: Universal Quality (aramid fiber) (Other materials available) Shape: oval longitudinal sightglass for insertion or welding Nominal size: 250 - 670 mm Nominal pressure: Operating pressures up to 6 bar (Vacuum version available on request)   Installation length View KG 250 180 5,7 310 240 7,0 370 300 8,4 430 360 10,2 490 420 11,0 550 480 12,4 610 400 13,7 670 600 15,1   Temperature: 100°C or 243°C depending on glass and gasket selection. Gasket selection: PTFE (200°C) FKM (200°C) NBR (100°C) C4400 (150°C) Silicone (200°C) EPDM (140°C) Graphite (280°C) Special feature: A Lloyd's Register design appraisal is available. Take advantage of our 360 degree 3D view for a perfect all-round view of our product.   While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data. SHORT DESCRIPTION - OVAL SIGHT GLASS FOR WELDING INTO VESSELS AND TANKS  The ACI container sight glass Type 336 is a container sight glass in an oval form and due to its geometry, it can be used not only for the observation of processes, but also as a filling level indicator. As glass material, we use borosilicate glass tried and tested in industry, but we can also supply also high-performance materials such as quartz or sapphire glass for exceptional loads on request. In its original condition, borosilicate glass is already highly resistant to most acids. If there are strong alkali media, it is possible to use one of our customised mica layers to protect the glass surface. Alternatively, we also use protective layers made of KEL-F, FEP or PTFE foil. As sealing material, we use high-quality flat seals made of proven raw material. For example, for many applications we use the robust and economical aramid fibre seals C4400 by the company Klinger. For chemically and thermally more challenging operating conditions, we recommend novaphit MST by Frenzelit and comparable graphite compound materials. Soft seals made of silicone, EPDM or NBR are also part of our product range. For food uses and very aggressive media, we fit your individually adapted fitting with pure PTFE, expanded or solid, PTFE with inserts (glass fibre or glass beads) or special seals such as Garlock Gylon. For the flange materials, you have the choice of our usual high-quality types of steel and stainless steel, without exception with pressure device approval and tested according to all current standards. Apart from standard types of steel such as S235, or stainless steel 1.4571 or 1.4541, we also use the alloy 1.4404 that is often used internationally. High-performance alloys such as Hastelloy or duplex steels can also be supplied on request. Read on for technical information and detailed product graphics.