Sight glass type 521
nominal size 8"
Welding ends made of 1.4571
Nominal pressure PN250
Body made of 1.4571
Borosilicate glass similar to DIN 7080
Free view max. Ø 80 mm
Seals: Novaphit MST from Frenzelit
CE marking: CE 0525
Operating temperature: -10 ° C to plus 280 ° C.
Operating pressure max. 140 bar
Design pressure PS 155 bar.
Medium: Mixture of nitrogen, 6% NaCL saline, Exxsol D140 oil
Construction and design according to AD 2000
