SLO Aerre Inox Sight Glass - Flow indicator BIO - double window

Compact sanitary flow Indicator with double window

Flow Indicator Bio is a compact double window sight glass, suitable for a wide range of applications in high purity systems. 

The Sight glass can be installed in any position to observe fluid flow. This feature ensures that the sight glasses are free-draining and avoids the possibility of fluid retention. The sight flow indicator is usually employed to detect either the presence or absence of solutions, or to observe fluid for turbulence, colour or clarity. The Sanitary Flow Indicator BIO series are ideal for high purity applications and are easy to install.


  • Other materials O-rings available
  • Autoclavable, CIP/SIP
  • Each Sanitary Flow Indicator BIO is marked with code, material and Heat No. for full lot traceability
Sizes 1/2" to 4"
Max. pressure -1 bar to 6 bar
Temp. range -80°C to 150°C
Connections Tri-Clamp
Material - Body: 316L (1.4404)
- Glass: Borosilicate
- O-ring: FKM
Surface finish Interior surfaces SF1
Certificates (standard) 3.1 material, FDA, USP Class VI 121°C, {87}, {88}, PED, TSE/BSE, CE1935/2004
Certificates (optional) 2.2 surface finish, ATEX 2GD