Flow sight glass type 531 PN 10/63Flow sight glass with welding ends USAGE INSTALLATION NOTE Flow sight glasses of type 531 serve to observe the filling level and flow in pipelines. They enable reliable monitoring of the function and performance of individual devices as well as complete systems. When welding the fitting, care must be taken to ensure that no uncontrolled temperature entry occurs in sensitive components. In particular, the sight glass plates must be protected from thermal stress, mechanical damage, as well as from weld beads and splashes. Appropriate protective measures such as thermal protection, covers, or splash protection devices should be implemented accordingly. 10112025 - Subject to technical changes and errors!

rFlow sight glass type 531 PN 10/63

rFlow sight glass type 531 PN 10/63 Example for Explaining the Code Composition GROUP TYPE 4) Borosilicate glass DIN 7080 + Mica Unless otherwise stated, the highlighted factory standard will be delivered. The product code 11-531-100-1-1-1-4000 corresponds to the standard version: ACI Type 531 Body 1.4571 Flange covers 1.4571 Borosilicate glass DIN 7080 Gasket KlingerSil® C4400 For aggressive media, FEP or Halar® coated sight glass plates can be used. In steam, mica discs should be used to protect the glasses. 10112025 - Subject to technical changes and errors!

Flow sight glass type 531 PN 10/63 Flow sight glass with welding ends QUICK OVERVIEW Custom solutions possible Accessories available OPERATING CONDITIONS Operating conditions depend on the choice of glass and seals: up to 10 barg up to 16 barg up to 25 barg up to 40 barg up to 63 barg SIGHT GLASS

rFlow sight glass type 531 PN 10/63 OPTIONAL ACCESSORIES Double glazing FEP protective screen / coating > for high pH values 9 Konigskamp 19 • 52428 Julich • Germany 10112025 - Subject to technical changes and errors! > up to 320 °C with Borosilicate glass DIN 7080 > with PTFE, silicone, EPDM or FKM wipers