Connection for pressure level switch

Aluminium flange.
4 ø8.5 holes on ø160 mm pitch circle diameter.
AISI 316 stainless steel and EPDM membrane.

Aluminium flange.
4 ø7 holes on ø142 mm pitch circle diameter.
AISI 316 stainless steel and EPDM membrane.

Aluminum flange.
No. 6 holes ø7 on pitch circle ø144 mm.
Screws that do not protrude from the membrane fixing counter flange.