We need sight glass
to view inside tank
size
1) round type 6" diameter with flange for mounting
2) elongated 400mm x 100mm x 15mm with flange
tempered brorsilicate glass , operating temperature 100C
operating pressure atmospheric , so glass for 150psi (10bar) should be enough
pipeline sight glass -threaded end- bsp
to connect to pipe size
1) 1/2" and
2) 1"