EFR3 CONSTANT FLOW REGULATOR
FOR LOWER FLOWS
APPLICATIONS
- Liquid and gas purge applications
- Tank level measurement
- Designed for use with ELF and ESKO legacy L-meters
FEATURES
- Solid heavy-duty construction
- Clearly labelled connection points
- Compatible with variable area flow meters of corresponding flow range
OPTIONS
- Nitrile, Viton® or EPDM seals
AUTOMATIC REGULATION
For flows up to 3 liters/minute
MAINTAINS FLOWS
For liquid flows where supply or back pressure varies and for gas flows where back pressure varies
HOW TO KEEP FLOW CONSTANT
The model EFR3 constant flow regulator is designed and built by ESKO to maintain steady low level liquid flows in applications where supply or back pressure varies and for gas flows in applications where back pressure varies. The model EFR3 provides automatic regulation for flows up to 3 liters/minute. It is compatible with variable area flow meters with corresponding flow ranges. Model EFR3 constant flow regulators attach easily to the model ELF purge flow meter, and legacy model L flow meters supplied by ESKO. The model EFR3 features simple but solid and heavy-duty stainless steel construction with clearly labelled etched connection points (IN and OUT). Like the model ELF meter, O-ring seal materials on the model EFR3 can also be specified: Nitrile O-rings are standard, Viton O-rings tolerate high heat and EPDM is best for chemical resistance.
TECHNICAL SPECIFICATIONS
| MODEL | EFR3 |
|---|---|
| BODY MATERIAL | SS316 |
| Membrane | EPDM |
| O-ring seals | Nitrile (optional Viton® or EPDM) |
| Nominal flow | 36 GPH (2.3 LPM) H2O |
| Maximum flow | 50 GPH (3 LPM) H2O |
| Maximum differential pressure | 290 psi |
| Maximum static pressure | 290 psi |
| Maximum temperature | 167°F / 75°C |
| Connections | 1/4” NPT |
| Weight | 1.66 lb (0.75 kg) |
| Build options | Nitrile, Viton® or EPDM seals, connections |
| Optional accessories | Commonly paired with ELF purge flow meters |
OPTIONS AND ADD-ONS
Pair With
- ELF purge flow meter
O-RINGS
- Nitrile
- Viton®
- EPDM