Glass ring tubular sight glass type 640 PN16

OD < 20 mm Outer diameter OD Wall thickness WT [mm] [mm] 3 0,7 4 0,8 5 0,8 6 1,0 1,5 7 1,0 1,5 8 1,0 1,5 9 1,0 1,5 10 1,0 1,5 2,2 11 1,0 1,5 2,2 12 1,0 1,5 2,2 13 1,0 1,5 2,2 14 1,0 1,5 2,2 15 1,2 1,8 2,5 16 1,2 1,8 2,5 17 1,2 1,8 2,5 18 1,2 1,8 2,5 19 1,2 1,8 2   20 mm ≥ OD < 40 mm Outer diameter OD Wall thickness WT [mm] [mm] 20 1,2 1,8 2,5 22 1,2 1,8 2,5 24 1,2 1,8 2,5 26 1,4 2,0 2,8 28 1,4 2,0 2,8 30 1,4 2,0 2,8 32 1,4 2,0 2,8 33 2,0 34 1,4 2,0 2,8 36 1,4 2,0 2,8 38 1,4 2,0 2,8 40 1,6 2,3 3,2 5   40 mm ≥ OD < 60 mm Outer diameter OD Wall thickness WT [mm] [mm] 40 1,6 2,3 3,2 5,0 42 1,6 2,3 3,2 44 1,6 2,3 3,2 45 5,0 46 1,6 2,3 3,2 48 1,6 2,3 3,2 50 1,8 2,5 3,5 5,0 7,0 9,0 52 1,8 2,5 3,5 54 1,8 2,5 3,5 55 5,0 56 1,8 2,5 3,5 58 1,8 2,5 3   60 mm ≥ OD < 100 mm Outer diameter OD Wall thickness WT [mm] [mm] 60 2,2 3,2 4,2 5,0 7,0 9,0 65 2,2 3,2 4,2 5,0 70 2,2 3,2 4,2 5,0 7,0 9,0 75 2,2 3,2 4,2 5,0 80 2,5 3,5 5,0 9,0 85 2,5 3,5 5,0 90 2,5 3,5 5,0 7,0 9,0 95 2,5 3,5 5,0 100 2,5 3,0 3,5 5,0 7,0 9   100 mm ≥ OD < 170 mm Outer diameter OD Wall thickness WT [mm] [mm] 100 2,5 3,0 3,5 5,0 7,0 9,0 105 3,0 5,0 110 3,0 5,0 7,0 115 3,0 5,0 7,0 120 3,0 5,0 7,0 9,0 125 5,0 9,0 130 3,0 5,0 7,0 9,0 135 5,0 7,0 140 3,0 5,0 7,0 145 5,0 150 3,0 5,0 7,0 9,0 155 5,0 160 5,0 7,0 165 5,0 7   OD ≥ 170 mm Outer diameter OD Wall thickness WT [mm] [mm] 170 5,0 7,0 9,0 180 5,0 7,0 9,0 190 5,0 7,0 200 5,0 7,0 9,0 215 5,0 7,0 9,0 225 7,0 9,0 240 9,0 250 5,0 7,0 9,0 270 5,0 7,0 9,0 300 5,0 7,0 9,0 315 7,0 9,0 325 9,0 10,0 350 5,0 365 7,0 400 6,0 415 7,0 420 9,5 430 6,0 440 7,0 450 7,0 8,0 460 8,5 465 7   While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data. Standard size range Large diameter tubes are sometimes called cylinders. The standard sizes of borosilicate tubes are given below.Choose the right outer diameter (OD), available wall thickness (WT), the required length (L) and the number of pieces, and then place your order by e-mail or contact form. The tubes are made of borosilicate glass 3.3. Detailed information about dimensions and tolerances of the borosilicate tubes we offer is available on the manufacturer's website, SCHOTT AG. NOTE! The standard tube length is 1500 mm, but we can supply tubes of different lengths. If you can't find correct size - contact us.   While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data.

Rotor plastic (120°C) or PTFE: A liquid flow is indicated through rotation of the rotor. As a result, flow control is much easier and quicker to detect. Flap made of 1.4571: A liquid flow is indicated by opening and moving the flap. In this way it is easier and quicker to check the flow rate. Vacuum version with O-ring: In this case of vacuum, there is a risk whereby the gasket can be pulled inwards and the external medium can enter the valve. For medium vacuum, a PTFE seal should be used, for higher vacuum, or O-ring seal made of Viton is required. Double glazing: Double glazing ensures additional safety in case of damage to inner glass. The additional glass prevents distribution of medium and possible glass splinters in case of damage or even destruction of the inner glass.     The ACI flow sight glass type 550 is a robust sight glass for industrial applications. The body is made of high-quality stainless steel casting 1.4408, which ensures excellent corrosion resistance as well as high mechanical strength. The design is intended for installation between DIN EN 1092-1 flanges and allows the visual monitoring of media in pipelines under working pressure. The type 550 is manufactured in accordance with DIN 11869 (formerly DIN 3237). Upon request, versions in other materials and alloys are also available, e.g., 1.0619 (cast steel) or Alloy C22, according to your specification. Flange connections:As standard, the sight glass is supplied with flanges according to DIN EN 1092-1 PN 10/16/25/40.  Gasket system:The gasket is achieved via proven flat gaskets from leading manufacturers, including: Frenzelit novaphit® MST XPKlingerSil® C4400Garlock Gylon®PTFE (pure or modified)Over 50 other gasket materials available upon requestOptional protective coatings for the sight glass:For increased thermal and chemical loads, the sight glasses can be equipped with the following protective layers: HALAR® coatingFEP coatingMica protection disc Additional equipment (factory-integratable): Sight glass wiper type SGW (with wiping blades made of PTFE, silicone, or EPDM)Spraying devices for cleaningLED lights, also available with ATEX certification for explosion-prone areas upon request Cross-sectiondrawing Dimensions <tr"> </tr"> DN 15 20 25 32 40 50 65 80 100 1251 1501 2001 D (PN16) 95 105 115 140 150 165 185 200 220 250 285 340 D (PN25) 95 105 115 140 150 165 185 200 235 270 300 360 D (PN40) 95 105 115 140 150 165 185 200 235 270 300 375 BL 130 150 160 180 200 230 290 310 350 400 480 600 D1 32 32 48 48 65 80 80 100 125 150 175 175 1) According to DIN 11869  

Nuts Flange Threaded rod Borosilicate glass cylinder Gasket The ACI tubular sight glass type 620 offers a complete 360° view of the process medium through a borosilicate glass cylinder. Encased between two high-quality flanges made of stainless steel or carbon steel, it enables comprehensive visual control of your system. The standard version is equipped with flanges made of stainless steel 1.4571 (316Ti) – a material known for its excellent corrosion resistance and durability in industrial applications. For less demanding applications, a variant with flanges made of P265GH is also available. In addition, special materials such as Hastelloy®, duplex steels, or other high-performance alloys can be realized upon request. The glass tube is made of industrially tested borosilicate glass 3.3 according to DIN ISO 3585. It impresses with high temperature and chemical resistance as well as very good optical properties. The sealing is done with individually selectable flat seals from a wide range of materials – from classic fiber material seals to high-quality special materials like PTFE (Teflon®), NBR, novaphit® MST-XP, or KlingerSil® C4400. This allows the gasket to be optimally adapted to the medium, temperature, and pressure. In nominal sizes up to DN 50, the tubular sight glass type 620 is designed for operating pressures of up to 16 barg. Thanks to the precise coordination of flange, gasket, and glass, the fitting is almost dead space-free, making it suitable for hygienically demanding processes. For areas with increased mechanical hazards – e.g., when installed under walkways – we recommend optional impact protection covers. These reliably protect the glass tube from falling objects and minimize the risk of unplanned failures or damage. Cross-sectiondrawing Dimensions DN 15 20 25 32 40 50 65 80 100 125 150 200 250⁴ 300⁴ K [mm] 65 75 85 100 110 125 145 160 180 210 240 295 350 410 DF [mm] 41 54 64 74 84 98 118 134 154 184 208 264 320 370 D [mm] 95 105 115 145 150 175 195 200 225 250 295 345 400 460 PS [barg] 16 16 16 16 16 16 10 10 10 8 7 5 4 4 Number of bores and diameter according to DIN EN 1092-1 - PN10/16 (from the nominal size DN 200 only PN 10) 4) Special construction, only upon prior request. Other sizes, lengths, and flange standards available upon request