Wiper SW2 with flexible shaft for sight glass fittings DIN 28120

Nuts Stud bolts Cover flange Glass cushion Sight glass Gasket Base flange 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. Cross-sectiondrawing Dimensions DN 25 40 50 80 100 125 150 200 250² 300² Da [mm] 115 150 165 200 220 250 285 340 395 445 Di [mm] 48 65 80 100 125 150 175 225 280 325 h1 [mm] 16 16 16 20 22 25 30 35 40 45 h2 [mm] 25 30 30 30 30 30 36 36 40 45 Glass-Ø [mm] 63 80 100 125 150 175 200 250 300 355 s (PN10) [mm] 10 10 12 15 20 20 25 30 45 45 s (PN16) [mm] 10 12 15 20 25 25 30 - - - Weight (PN 10) [kg] - 5,4 5,9 9,6 11,1 14,3 21,9 30,7 44,7 59,2 Weight (PN 16) [kg] 2,8 5,4 6,0 9,7 11,3 14,6 22,4 - - - 2) Similar to DIN 28120

Cross-sectiondrawing Dimensions Dimensions: Size     3 4 5 6 7 8 9 10 11 12 13 Nominal width  DN   50 80 100 125 150 200 250 300 350 400 500 Glass Ø  D [mm]    100 125 150 175 200 250 300 upon request Clear view  d1 [mm]    80 100 125 150 175 225 280 Wiping circle Ø  d2 [mm]    75 95 120 145 170 220 275 Glass thickness  S [mm]  Operating pressure max. PS [barü] Height  H [mm]                    116 15 8 5 4 3 2 / / 111 20 12 8 5 5 4 2 1 106 25 20 12 8 8 5 4 2 121 30 25⁴ 20 12 12 8 5 3 116 35 / 25⁴  21 15 11 7 4 111 40 / / 25⁴  20 14 9 6 106 45 / / / 25⁴  18⁴  11 7 111 55 ³   3) 55 mm on request4) higher pressures on request The sight glass wipers of type SGW are designed for the on-demand manual cleaning of glass plates in round sight glass fittings. They are suitable for applications under pressure and can also be easily retrofitted into existing sight glass fittings. Made of high-quality stainless steel, the wipers also meet the requirements in the food and drinking water sector. Various materials are available for the wiper blade: PTFE, silicone, or EPDM. The sight glass wipers are particularly effective in combination with the spray device SVI or SVIII.