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View Solenoid Valves for
Solenoid Valves

LFV Series 2-Way Isolation Solenoid Valve

This 13 mm, normally closed, bidirectional, chemically inert valve is widely used to reliably control aggressive fluids in diagnostics and analytical instruments. It features a media-separating diaphragm seal, high flow rates, low internal volume, and consistent performance across an extensive cycle life. Each valve is customizable (higher pressure, etc.) and 100% tested to guarantee performance.

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Key Product Facts
  • Inert Seal Material Options:FKM, EPDM, & FFKM
  • Low Internal Volume:As low as 21 µL
  • Long Cycle Life:10 M cycles minimum
  • Lohm Rate:1000 – 2000 Lohms (Cv = 0.020 – 0.010)
  • Operating Pressure:Vacuum – 30 psig

Product Information

General Specifications
Characteristic Specification
Operating Pressure Vac - 30 psig
Cycle Life1 10 M Cycles Min
Recommended Filtration 35 Microns or Finer
Response Time2 30 ms Max
Operating Temperature EPDM: 30°F to 120°F (-1°C to 49°C)
FKM: 40°F to 120°F (4°C to 49°C)
FFKM: 70°F to 120°F (21°C to 49°C)
Max Coil Temperature3 220°F (104°C)
Storage Conditions Temperature: -40°F to 175°F (-40°C to 80°C)
Relative Humidity: 85% Max, Non-Condensing
Weight 24 - 26 grams
Electrical Connection4 Contact pins
1Typical cycle life on water; actual cycle life will vary depending on application conditions.
2Typical response time based on air flow at 10 psig, 2 Hz, 65°F. Response times are application dependent and can be enhanced with the use of high speed drive circuits.
3To ensure solenoid coil temperatures remain within specification, duty cycle limitations may be required. Contact The Lee Company for recommendations specific to your application.
4Models listed in part number table come standard with contact pins. Lead wires or a locking end cap connector are also available upon request.
WETTED MATERIALS
Component Material
Port Head PEEK
Diaphragm Seal EPDM, FKM or FFKM
Gasket and O-rings* EPDM, FKM or FFKM
*Gasket and o-ring materials vary by valve model and may differ from diaphragm material. See individual valve inspection drawings for gasket or o-ring material specific to a valve part number.
Flow Curve
*Lohm rating of each valve model is based on air performance. Curves shown above depict empirical data from actual product performance on water.
Cross Section Views
The threaded ¼-28 flat bottom (FB) ports of this configuration enable quick and simple connection to industry standard ¼-28 FB tubing and fitting systems. This allows rapid prototype setup and connection to other fluidic components, such as dispense pumps (see Variable Volume Pumps).
Dimensional Views
1/4-28 port configuration available with electrical contact pins. Lead wires or a locking end cap connector are also available upon request. Locking end cap provides secondary retention and is compatible with TE Connectivity part number 104257-2 style connectors.
This image is for reference only. All dimensions are in inches [millimeters].
Mounting Details
Flange Manifold Mount Configuration
This image is for reference only. All dimensions are in inches.
Dimension "D" depth is dependent upon whether valve is sold with external O-rings or a gasket seal. Reference the part number table or the individual valve's inspection drawing to determine whether the O-ring (LSIX1001540A) or gasket (LSIX1001100A) installation boss is applicable for complete manufacturing specifications.

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Part Numbers & Specifications
Filter Part Numbers
FLUIDIC PORTS
VOLTAGE (Vdc)
SEAL MATERIALS
PART NUMBER
FLUIDIC PORTS
VOLTAGE (Vdc)
OPERATING PRESSURE1 (PSIG) LOHM RATE2 (Cv) POWER CONSUMPTION (W) INTERNAL VOLUME (µL)
SEAL MATERIALS
Request Information
LFVA1238110H 1/4-28 Ports 12 Vacuum - 30 1800 Lohms (0.011) 1.5 21 FKM Request
LFVA2438110H 1/4-28 Ports 24 Vacuum - 30 1800 Lohms (0.011) 1.5 21 FKM Request
LFVA1238210H 1/4-28 Ports 12 Vacuum - 30 1800 Lohms (0.011) 1.5 21 EPDM Request
LFVA2438210H 1/4-28 Ports 24 Vacuum - 30 1800 Lohms (0.011) 1.5 21 EPDM Request
LFVA1231413H 1/4-28 Ports 12 Vacuum - 30 1800 Lohms (0.011) 1.5 21 FFKM Request
LFVA2431413H 1/4-28 Ports 24 Vacuum - 30 1800 Lohms (0.011) 1.5 21 FFKM Request
LFVA1228110H Barbed Ports 12 Vacuum - 30 1350 Lohms (0.015) 1.5 43 FKM Request
LFVA2428110H Barbed Ports 24 Vacuum - 30 1350 Lohms (0.015) 1.5 43 FKM Request
LFVA1228210H Barbed Ports 12 Vacuum - 30 1350 Lohms (0.015) 1.5 43 EPDM Request
LFVA2428210H Barbed Ports 24 Vacuum - 30 1350 Lohms (0.015) 1.5 43 EPDM Request
LFVA1221410H Barbed Ports 12 Vacuum - 30 1350 Lohms (0.015) 1.5 43 FFKM Request
LFVA2421410H Barbed Ports 24 Vacuum - 30 1350 Lohms (0.015) 1.5 43 FFKM Request
LFVA1258110H3 Flange Manifold Mount 12 Vacuum - 30 1350 Lohms (0.015) 1.5 21 FKM Request
LFVA2458110H3 Flange Manifold Mount 24 Vacuum - 30 1350 Lohms (0.015) 1.5 21 FKM Request
LFVA1258210H3 Flange Manifold Mount 12 Vacuum - 30 1350 Lohms (0.015) 1.5 21 EPDM Request
LFVA2458210H3 Flange Manifold Mount 24 Vacuum - 30 1350 Lohms (0.015) 1.5 21 EPDM Request
LFVA1251410H Flange Manifold Mount 12 Vacuum - 30 1350 Lohms (0.015) 1.5 21 FFKM Request
LFVA2451410H Flange Manifold Mount 24 Vacuum - 30 1350 Lohms (0.015) 1.5 21 FFKM Request
LFVA1248110H3 Coupling Screw Manifold Mount 12 Vacuum - 30 2600Lohms (0.008) 1.5 21 FKM Request
LFVA2448110H3 Coupling Screw Manifold Mount 24 Vacuum - 30 2600Lohms (0.008) 1.5 21 FKM Request
LFVA1248210H3 Coupling Screw Manifold Mount 12 Vacuum - 30 2600Lohms (0.008) 1.5 21 EPDM Request
LFVA2448210H3 Coupling Screw Manifold Mount 24 Vacuum - 30 2600Lohms (0.008) 1.5 21 EPDM Request
LFVA1241420H Coupling Screw Manifold Mount 12 Vacuum - 30 2600Lohms (0.008) 1.5 21 FFKM Request
LFVA2441420H Coupling Screw Manifold Mount 24 Vacuum - 30 2600Lohms (0.008) 1.5 21 FFKM Request
Clear Filters
1Higher pressure models are available upon request.
2Maximum Lohm rate on air. Reference the flow curve under the product information tab for typical flow characteristics on water.
3Valves sold with 2x O-rings for manifold mounting. All other flange or coupling screw mount valve part numbers are sold with a face seal gasket.

Installation & Accessories

Accessories View
Replacement Parts & Accessories
PART NUMBER DESCRIPTION
LSWX0208050A Flange Mount, Replacement Gasket, FFKM
LHWX0208750A Coupling Screw Mount, Replacement Gasket, FFKM
LSWX0508810A Flange Mount & Coupling Screw Mount, Replacement O-ring, FKM (Blue)
LSWX0508820A Flange Mount & Coupling Screw Mount, Replacement O-ring, EPDM (Purple)
LSWX0504300A Lead Wire Connector, 6" Long
LSWX0606700A Lead Wire Connector, 24" Long
Several standard PEEK and PMMA manifolds are available to ease prototype setup, please contact us for more information. Alternate materials and customized manifold designs are also available upon request.

CAD Envelopes

Resources

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The Lee Company has developed the Lohm Laws for defining and measuring resistance to fluid flow. The Lohm is defined such that 1 Lohm will flow 100 GPM of water with a pressure drop of 25 psi at a temperature of 80°F.

Lohms for Liquids Lohms for Gases