Type 335 - PN3

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 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:  from 176 mm to 536 mm   Installation length View KG 176 126 3,3 226 176 4,2 256 206 4,8 316 266 5,9 376 326 7,0 436 386 8,1 496 449 9,2 536 486 10,0   Nominal pressure: Operating pressures up to 25 bar (Vacuum version available on request) 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) Options: 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 - OVAL SIGHT GLASS WITH ROUNDED ENDS PN 25 The ACI container sight glass Type 337 is a robust series of oval container sight glasses. Due to the use of sight glass panels according to the standard industry norm DIN 7081, it is possible for Type 337 to use sight glass panels of the “transparent” or “reflex” type, as for Type 330. The “transparent” type enables the use of protective layers such as mica, KEL-F, PRFE or FEP to protect the glass surface from chemical and thermal influences, while the “reflex” type ensures a better readability of the liquid level, due to the inset grooves. Apart from the borosilicateglass described in the industry norm DIN 7081, we also use higher quality materials such as quartz or sapphire if your application requires it, for especially high temperatures or heavy-duty use. Sealing is provided, like for most of our sight glass fittings, by high-quality flat seals such as KlingerSIL C4400, Frenzelit novaphit MST, or chemically highly-resistant PTFE in an untreated or expanded form. Durable soft seals such as silicon, EPDM or NBR can also be installed in your fitting by the factory. As flange material, you can choose from our whole catalogue of high-quality types of steel and stainless steel, such as S235, 1.4571 or 1.4541. The internationally widespread stainless steel 1.444 is also available, along with high-performance alloys such as Hastelloy or duplex steel. If it is necessary to replace the glass or seal, our competent team of technical and sales consultants will help to provide a solution as quickly as possible. Read on for technical information and detailed views of our container sight glass Type 337.