Type 336 - PN6

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 Sealing:  Universal Quality (aramid fiber) (Other materials available) Shape: oval longitudinal sightglass for insertion or welding Nominal size: from  270 to 760 mm Nominal pressure: Operating pressures up to 3 bar (Vacuum version available on request)   Installation length View KG 270 200 6,5 340 270 8,1 410 340 9,8 480 410 11,4 550 480 13,0 620 550 14,6 690 620 16,3 760 690 18,0   Temperature: 100 ° C or 243 ° C depending on the glass and seal selection. Gasket selection: PTFE (200°C) FKM (200°C) NBR (100°C) C4400 (150°C) Silicone (200°C) EPDM (140°C) Graphite (280°C) Option: Optional versions are possible. 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 - VESSEL SIGHT GLASS LEVEL INDICATOR The ACI tank sight glass Type 335 is a lightweight construction that offers a significantly enlarged viewing opening than our Type 330, for lower operating pressure up to 3 bar. Due to this structure, Type 335 combines the functions of our round container sight glasses such as Type 318 and our filling level indicators for container wall installation Type 330. Like our other sight glass fittings, Type 335 can be fitted not only with the highly resistant borosilicate glass proven in industry, but for your most demanding uses also with quartz glass or the especially robust and scratch-free sapphire glass. For sealing, we use flat gasket materials from well-known manufacturers, which we select based on your individual requirements. For many areas, we use the proven aramid fibre seal C4400 by KlingerSIL. For high temperatures, we trust in novaphit MST by Frenzelit, and for chemically challenging uses such as strong acids, the sight glass is sealed with pure or expanded PTFE. Type 335 is supplied preassembled. After welding the basic flange, the supplied seals are fixed together with the sight glass by the cover flange, whereby even very low torque is sufficient to achieve sufficient sealing force. If there is unexpected damage to the sight glass during operation, our competent team of technicians and salespeople are available to provide a replacement. Read on for more technical information and detailed views.