Sight Flow Indicators
SG-Series Sterile Flow Sight Glass
Sanitary fittings and a clear glass tube for hygienic fluid systems
The SG-Series mounts directly into the pipeline with sanitary fittings. Its polished stainless steel body protects a transparent borosilicate glass tube for observation of the fluid.
- CE 2810Approval listed in datasheet
SG-SeriesTechnical data
Materials and seals
- Body
- Polished SS316
- Sanitary fittings
- SS316
- Tube housing
- SS316
- Lens tube
- Borosilicate glass tube
- O-ring
- Viton, Silicone or EPDM
The datasheet states that all gaskets meet USP Class VI, are FDA compliant and are fully traceable. Confirm the required documentation for your application.
Operating limits and connections
- Pressure at 25°C
- Up to 150 psig
- Pressure at 150°C
- Up to 20 psig
- Maximum temperature
- 150°C (datasheet states 300°F)
- ISO 2852 sizes
- 3/8, 1/2, 3/4, 1, 1 1/2 and 2 in
- DIN 32676 sizes
- 10, 15, 20, 25, 40 and 50
- Flow direction
- Any flow direction available
Dimensions, parts and flow direction
The numbered drawing corresponds to the parts list below. Dimension data follows both drawings.


| Size | A (mm, ±1.0) | B (mm, ±1.0) | C (mm, ±1.0) | Weight (approx. kg) |
|---|---|---|---|---|
| 3/8 in | 65 | 20 | 9 | 0.15 |
| 1/2 in | 76 | 20 | 9 | 0.20 |
| 3/4 in | 87 | 30 | 11 | 0.20 |
| 1 in | 91 | 30 | 16 | 0.45 |
| 1 1/2 in | 105 | 40 | 24 | 0.50 |
| 2 in | 120 | 48 | 35 | 0.70 |
The source dimension table lists inch sizes only. Confirm dimensions for DIN connection selections.
| Item | Part | Material |
|---|---|---|
| 1 | Sanitary fitting | SS316 |
| 2 | Body | SS316 |
| 3 | Tube housing | SS316 |
| 4 | Lens tube | Borosilicate glass tube |
| 5 | O-ring | Viton, Silicone or EPDM |
Ordering information
Choose your options to build an enquiry reference.
Specifications are general selection guidance. Confirm materials, connection standards, operating temperature and pressure with Sightflow before placing an order.
