Home » Products » EFR3 Constant flow regulator

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


MODELEFR3
BODY MATERIALSS316
MembraneEPDM
O-ring sealsNitrile (optional Viton® or EPDM)
Nominal flow36 GPH (2.3 LPM) H2O
Maximum flow50 GPH (3 LPM) H2O
Maximum differential pressure290 psi
Maximum static pressure290 psi
Maximum temperature167°F / 75°C
Connections1/4” NPT
Weight1.66 lb (0.75 kg)
Build optionsNitrile, Viton® or EPDM seals, connections
Optional accessoriesCommonly paired with ELF purge flow meters

OPTIONS AND ADD-ONS

Pair With

  • ELF purge flow meter

O-RINGS

  • Nitrile
  • Viton®
  • EPDM

ORDER GUIDE