|Sight glass body: Aluminum
Mounting: Push-fit; use pin key for installation
Sight glass: Plexiglas (PMMA)
Seal: NBR synthetic rubber
Reflector: White plastic with red fluid level limit indicators
No thread is required for installing the GN 537 fluid level
The fluid level sight glass is inserted into the bore d2, tolerance
H11. By simply tightening the ring nut using the pin key,
the seal is pressed against the contact surface which, at
the same time, holds the sight glass in position.
For removal, reverse the procedure.
Application is limited to non-pressurized or slightly pressurized
Maximum heat resistance: 80°C (175°F). Pin
Key for Installation