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EFR3 CONSTANT FLOW REGULATOR FOR LOWER FLOWS

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.

The EFR3 is often utilized in tank level measurement applications and liquid and gas purge applications.


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