SERIES S12B
DOUBLE WINDOW SIGHT FLOW INDICATOR - STANDARD 150 PSI THREADED
(Was Model 101, 141, 161)
Indication Types:
- Plain – No indicator for unobstructed view of media flowing in any direction
- Rotator – Paddlewheel indicator used for clear media to enhance flow indication in any direction
- Flapper – Side flapper to indicate horizontal flows in one direction for fast moving liquids
- Drip Tube – For vertical downward flows at low flowrates
Standard Connections:
- 1/4″ to 2″ NPT (Female)
Standard Ratings:
| STANDARD RATING (PSIG) | ||||||
|---|---|---|---|---|---|---|
| Material | 100°F | 200°F | 250°F | 300°F | 400°F | 500°F |
| Carbon Steel | 150 | 150 | 150 | - | - | - |
| Bronze | 150 | 150 | 150 | - | - | - |
| Stainless Steel | 150 | 150 | 150 | 150 | 150 | 150 |
Note: Ratings are limited by standard glass and gasket types. For higher ratings, refer to drawings or consult our Sales Dept.
Standard Materials:
| Standard Materials | ||||||
|---|---|---|---|---|---|---|
| Wetted | Non-Wetted | |||||
| Body Material | Indicator | Flapper/Rotor Pin | Gaskets | Glass | Cushions | Glass Retainers |
| Carbon Steel | PTFE Rotor | 316SS | Neoprene | Annealed Borosilicate | Garlock® IFG-5500 | Brass |
| Bronze | 316SS Flapper | |||||
| Stainless Steel | 316SS Drip Tube | Gylon® 3545 | ||||
Options:
- Buna-N, Fluorocarbon (Viton®), Ethylene Propylene (EPDM), Gylon® 3504/3545,Graphite and Garlock® IFG-5500
- Polycarbonate
- Gaseous Indicators
- Exotic Body Materials (See Matrix)
- Various Lens Materials (See Matrix)
- SS Glass Retaining Rings
- Socket Weld Connections
- Butt Weld Connections (need schedule and lenth)
- Glass Shield for Steam and Caustic Applications (See Matrix)
- C of C, MTR, NACE Certifications when requested at time of quotation
Application Notes:
- Saturated Steam Service: Upgraded gaskets and mica shields are recommended for saturated steam service. All ratings stated on our website and in our literature are non-steam ratings unless specified otherwise. Always contact our sales office for saturated steam ratings when needed.
- Potable Water: The Bronze indicator is not suitable for potable water
- Vacuum Service: No
- Gaseous Service: Not designed for lightweight gases
- Corrosion: Before ordering, verify all materials of our sight flow indicators are compatible with the service media(s), intermittently used cleaners, the environment, and cleaning processes in conjunction with the temperatures and pressures of the application(s) and future applications. John C. Ernst Co. does not make chemical compatibility recommendations. Compatibility is the responsibility of the user and/or specifying party.
Replacement Parts:
- Please contact our sales department
Alternate Equipment:
- More Options: Series S12
- Alternate Style: Series 13T
- Flange Plate Glass Retainer Style: Series S14T
- Integral Flange Plate Glass Retainer Style: Series S14TC
- Economical Bronze Indicators: Series S11
- Cylindrical Indicators: Series S18T
Model Number Matrix
