Longitudinal sight glass fitting type 335 PN 3 For welding or on

Material: Base flange and cover flange: RSt 37-2, H II, C 22.8, P250GH, P265GH, 1.4306 (F304L), 1.4404 (F316L), 1.4462 Duplex (F51), 14539 (Alloy 904 L), 1.4541 (F321) , 1.4571 (F316Ti) or according to customer specifications Sight glass:  borosilicate glass acc. to DIN 7080 Soda-lime glass acc. to DIN 8902 Seal:  Klingersil or as desired Screws:  A4-70 Shape:  according to DIN 28120 Nominal size: DN25 - DN250 Nominal pressure:  PN 10/16  (depending on size and material composition) Temperature:  with soda lime glass up to max. 150 ° C with borosilicate glass up to max. 280 ° C  with borosilicate & mica shield up to 320 ° C Higher operating temperatures on request Options:  Optional versions are possible.   Special construction/options: With wiper blades SWI or SWII With spray nozzle SV1 Double glass Double Glass with heating element With LED or halogen lights, ATEX certification available With protective coating, variant B of DIN 28120 With O-Ring seal High Temperature Version with quartz window Impact protection plexiglass shield More special constructions available on request   DN Da Di h1 h2 s kg Nm 25 115 48 16 25 10 2,9 30 40 150 65 16 30 12 5,0 55 50 165 80 16 30 15 6,0 55 80 200 100 20 30 20 10,3 55 100 220 125 22 30 25 11,5 55 125 250 150 25 30 25 15,2 64 150 285 175 30 36 30 23,5 107 200[1] 340 225 35 36 30 30,7 125 250[1] (similar to DIN) 395 280 40 40 45 44,6 107   [1] PN 10 only   Use our 360° 3D view to get a perfect allround look at our product. Our round sight glasses type 320 are welded on or in a container wall to allow for observation or illumination of the inside of the container. A sight glass made of chemically highly resistant borosilicate glass DIN7080 is clamped between two high-quality stainless steel flanges and proven quality seals.  Beyond the definitions of DIN 28120, we also offer type 320 in special sizes of DN 250 and DN 300. These sizes, not specified in the standard, have also been constructed in accordance with DIN 28120.  Our sight glasses type 320 are made from high-quality stainless steel 1.4571 (316Ti), which our customers have appreciated for years. The glass material used is the tried-and-tested borosilicate glass according to DIN 7080 (or according to customer specifications).  The sealing of the fitting is done with flat seals tailored to your needs from a comprehensive range of materials. In addition to the common fiber seals, this also offers more demanding materials such as PTFE (Teflon®), NBR, novaphit® MST-XP, KlingerSil® C4400, and many other brand seals. If the maximum operating temperature of borosilicate glass DIN 7080 does not meet your requirements, or if the process conditions pose a problem even for the highly resistant borosilicate glass, a mica protection disk specially adapted for the fitting offers additional protection against temperature and steam. FEP or Halar® coatings additionally protect the borosilicate glass from aggressive chemicals or alkalis. Like other sight glass fittings, type 320 can be equipped upon request with sight glass wiper type SGW and SWII, spray devices SVI, or lights.

    Type A Type B Type H Type TA 28 3) [bar] [°C] [bar] [°C] [bar] [°C] [bar] [°C] For soft environment,  not affecting aggressive on the glass ie. oils, hydrocarbons, etc. 240 120 290 120 340 120 - - 160 400 800 400 230 400 - - 0 - 10 430 0 - 10 430 0 - 10 430 - - For aggressive environment acting on the glass, eg. saturated steam, hot water, alkalis 35 1) 243 35 1) 243 42 1) 253 120 2) 324 70 300 85 300 85 300 180 356   1) For steam pressures above 35 bar is recommended to use mica shields.2) For steam pressures above 120 bar can be used only glasses TA-28-I.3) Glass type TA 28 can be used only with mica shields.   Dimensions:   Size TYPE A TYPE B TYPE H TYPE TA 28 L W H L W H L W H L W H I 115 30 17 115 34 17 - - - 113 27,6 16,8 II 140 30 17 140 34 17 140 34 22 - - - III 165 30 17 165 34 17 165 34 22 163 27,6 16,8 IV 190 30 17 190 34 17 190 34 22 188 27,6 16,8 V 220 30 17 220 34 17 220 34 22 218 27,6 16,8 VI 250 30 17 250 34 17 250 34 22 248 27,6 16,8 VII 280 30 17 280 34 17 280 34 22 278 27,6 16,8 VIII 320 30 17 320 34 17 320 34 22 318 27,6 16,8 IX 340 30 17 340 34 17 340 34 22 338 27,6 16,8 X - - - 370 34 17 - - - - - -   Note: transparent level gauge glasses are supplied in sets with gaskets and mica shields or separately. If you can not find the size - please contact us.   While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data. Transparent level gauge glasses offered by us are made by a recognized, global companies like Klinger, Maxos, Spectraglass of high-quality borosilicate ("extra hard") or aluminosilicateglasses. Glass in the production process is subjected to a two-sided polishing and toughening. This results in products characterized by high mechanical strength and high resistance to alkalis, acids and condensates. In the production process is conducted constant and precise control of transparency and the dimensions of manufactured glass. Transparent (smooth) level gauge glasses  are used to read the liquid level directly or with the use of CCTV (industrial television). They can be (type TA 28) used up to 180 bar / 356°C for aggressive environments affecting (interacting) the glass (eg. saturated steam, hot water, alkalis) and up to 300 bar / 400°C for soft environments. Glass must be protected from the medium side through the mica shields. They are especially recommended for environments contaminated, viscous and highly corrosive. Depending on the width and thickness there are four basic types of transparent level gauge glasses: type A - width 30 mm, thickness 17 mm type B - width 34 mm, thickness 17 mm type H - width 34 mm, thickness 22 mm type TA 28 - width of 27.6 mm, 16.8 mm In addition, the occasionally encountered also: Type C - width of 20 mm, thickness 12 mm Type D - width 25 mm, thickness 15 mm Transparent level gauge glasses are  supplied in sets with gaskets and mica shields or separately. The set, packaged in a common box, consists of: box set of washers  gasket mica shield for the media side mica shield for the place of observation(with a hole Φ ca. 1 mm) installation guide   In all TA-28 sets, soft washers and protective washers are made from graphite foil. In set TA-28-I gasket is made from graphite laminate KlingerGraphite type SLS (see desc. here), but for sets TA-28-III .. TA-28-IX KlingerGraphite type PSM is used (see desc. here). In sets type A, B, H all washers are made from KlingerSil plate type C-4430 (see desc. here), but gaskets are made from graphite laminate KlingerGraphite type SLS (see desc. here).   It is good to know, that the role of the mica shield installed on the outside (ie, on the side of the viewer) is to reduce the thermal shock to which gauge glass is exposed, working on the one hand, in an environment of high temperature (steam, hot water), and on the other, with a low (room) temperature environment. Outer mica shield helps to a longer faultless operation of the set. The hole made in the shield, protects against moisture staying between the glass and mica while mounting assembly and relieves pressure above and below the shield during normal operation. box: set of elements: installation guide:   We offer transparent glass meet the following standards: ÖNORM M 7354 (Austrian standard) DIN 7081 (German standard) JIS B 8211 (Japanese standard) ÖMV-Spez. H 2009 (Austrian factory standard of the petrochemical concern ÖMV-AG, Vienna) MIL-G-16356 D (regulations the US Navy) Esso Eng. Spec. 123 (Esso Research and Engineering Co. - New Jersey) S.O.D. Spec. 123 (Standard Oil Development Company - New Jersey) BS 3463 (British Standard) We also provide glass unusual: manufactured according to individual customer technical requirements, custom sizes and custom shapes.

Material: Base flange: RSt 37-2, H II, 1.4541, 1.4571 (factory standard) Cover flange: RSt 37-2, H II, 1.4541, 1.4571 (factory standard) Steel on request Sight glass: borosilicate glass to DIN 7080 Soda-lime glass according to DIN 8902 Seal:  Klingersil or as desired Screws:  5.6 galvanized, A2-70, A4-70 Shape: similar to DIN28120 but PN2.5 Nominal size: DN50 - DN200 Nominal pressure: up to 2.5 bar Temperature: With soda-lime glass up to max. 150°C With borosilicate glass up to max. 280°C With borosilicate glass & mica shield up to max. 320°C for higher temperatures please ask us. Miscellaneous: Special designs/options a) with wiper SWIb) with LED or halogen lights, also ATEX-certifiedc) with O-ring seal (suitable for vacuum)d) high-temperature version with quartz glasse) other special designs on request   SHORT DESCRIPTION - ROUND TANK SIGHT GLASSES TYPE 318 PN2,5 Our tank sight glass fittings Type 318 (PN2.5) are intended for welding installation into or onto a pressure vessel wall and provide a way to observe and illuminate the interior of the vessel. ACI tank sight glass fittings of Type 318 have been designed based on DIN 28120 for an operating pressure of up to 2.5 bar. Two flanges of high quality stainless steel 1.4571 (316Ti) surround a glass disc made up chemically highly resistant borosilicate glass 3.3 according to DIN 7080, creating a nearly maintenance-free inspection port. Contrary to the sight glass fittings described in DIN 28120, our Type 318 is significantly thinner and the hexagon head screws barely protrude out of the cover flange, thus reducing the space required for installation. Type 318 closes the gap between our non pressure retaining Type 317 and the stronger types 319 and 320. The sight glass fitting is sealed using flat gaskets specifically selected for your application from our vast range of gasket materials. Apart from commonly used aramid fibre gaskets, we can offer Type 318 with sophisticated materials like PTFE, NBR, graphite composites and many other gasket types. If the glass disc’s maximum operating temperature of 280°C does not suffice for your application, or your process fluids are challenging even for highly resilient borosilicate glass, a mica disc specifically fitting your sight glass provides additional protection of the glass surface against steam or aggressive chemicals like highly alkaline solutions. Like the rest of our tank sight glass fittings, Type 318 is available equipped with wipers type SW1, spray nozzles or light fixtures. Read on to learn more technical details of our Type 318!  

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   The ACI sight glass of type 330 is used for reliable observation of the liquid level in closed containers such as boilers, tanks, or silos. It is a rectangular vertical sight glass that can be either welded into the container wall or attached by welding. The fitting is equipped with a sight glass plate made of high-quality borosilicate glass according to DIN 7081 (or comparable). This is securely framed between gaskets and tightly screwed to ensure permanent sealing and high pressure resistance. Standardly, the sight glass type 330 is made of stainless steel 1.4571 (316Ti) – a material characterized by high corrosion resistance and durability. Upon request, the design is also available in many other materials, suitable for specific requirements and applications. The sealing of the fitting is done with flat gaskets tailored to your needs from an extensive range of materials. In addition to the common fiber material gaskets, more sophisticated materials such as PTFE (Teflon®), NBR, novaphit® MST-XP, KlingerSil® C4400, and many other branded gaskets are also available. If the maximum operating temperature of borosilicate glass according to DIN 7081 does not meet your requirements, or if the process conditions pose a problem even for the highly resistant borosilicate glass, a mica protection disc specially adapted for the fitting provides additional protection against temperature and steam. FEP or Halar® coatings also additionally protect the borosilicate glass from aggressive chemicals or alkaline solutions. For applications in poorly lit containers, the use of a reflex sight glass according to DIN 7081 (or comparable) is recommended. These glasses are embedded with special prism structures that break and reflect the incoming light – thus, the filling level can be recognized much better. If, however, the container is well-lit, the medium is very clear, or if the color of the medium should remain visible, a transparent sight glass is the better choice. It allows for an unaltered view and precise optical control of the contents. Important note: Reflex sight glasses cannot be combined with mica discs and coatings, as the protective mica layer prevents the light refraction necessary for reflection. Transparent glasses, on the other hand, can easily be equipped with mica discs, FEP, or Halar® coatings, which is particularly recommended for protection of the glass in the case of aggressive media or high temperatures.

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. The ACI sight glass of type 337 is used for reliable observation of the liquid level in closed containers such as boilers, tanks, or silos. It is a rectangular inline sight glass with round ends that can be either welded into or onto the container wall. The fitting is equipped with a sight glass plate made of high-quality borosilicate glass according to DIN 7081 (or according to customer requirements). It is securely encased between seals and firmly screwed in to ensure lasting tightness and high pressure resistance. Standardly, the sight glass type 337 is made of stainless steel 1.4571 (316Ti) - a material that is characterized by high corrosion resistance and durability. On request, the design is also available in many other materials, suitable for specific requirements and applications. The sealing of the fitting is done with flat seals tailored to your needs from an extensive range of materials. This offers, in addition to the common fiber seals, also more sophisticated materials like PTFE (Teflon®), NBR, novaphit® MST-XP, KlingerSil® C4400 and many other branded seals. If the maximum service temperature of borosilicate glass DIN 7081 does not meet your requirements or if the process conditions pose a problem even for the highly resistant borosilicate glass, a mica protection disc specifically adapted for the fitting provides additional protection against temperature and steam. FEP or Halar® coatings additionally protect the borosilicate glass from aggressive chemicals or caustics. For applications in poorly lit containers, the use of a reflex sight glass according to DIN 7081 (or comparable) is recommended. These glasses are embedded with special prism structures that refract and reflect the incoming light - making the filling level much easier to recognize. If the container is well illuminated, the medium is very clear, or if the color of the medium should additionally remain visible, a transparent sight glass is the better choice. It allows for an undistorted view and exact optical control of the contents. Important note: Reflex sight glasses cannot be combined with mica discs and coatings, as the protective mica layer prevents the light refraction necessary for reflection. In contrast, transparent glasses can be easily equipped with mica discs, FEP, or Halar® coating, which is particularly recommended for protection of the glass in aggressive media or at high temperatures.