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General Specifications

The following specifications apply to all LFY Series valves unless otherwise noted.

Cycle Life

The LFY valves will operate for a minimum of 5 million cycles on water at standard temperature and pressure conditions. Specific application conditions and fluids may affect the life of the valve.

Operating Pressure

The LFY valves will operate properly within the range specified. Excess pressure may adversely affect the cycle life.

  • Valve Proof Pressure............2 x normal rated pressure
  • Valve Burst Pressure............3 x normal rated pressure

Operating Temperature

  • Ambient operating range is 60°F to 118°F (16°C - 48°C)
  • Maximum allowable solenoid coil temperature is 250°F (121°C).
  • Increasing coil temperature tends to limit performance. Valve duty cycle and energized time must be evaluated so coil temperature does not exceed 250°F (121°C).

Response Time

Typical response time for the LFY valve is 50 ms at 65°F (18°C). Lower operating temperatures can dramatically increase response time. Extended periods of inactivity may also increase the initial response time.

Port Connections

Several different port connections are available:

  • 054 ports: these are designed for use with 0.040" (1.0 mm) I.D. flexible tubing
  • 062 MINSTAC: for use with Lee 062 MINSTAC Teflon® tubing system
  • 156 MINSTAC: for use with 156 MINSTAC Teflon tubing systems
    (also compatible with many 1/4-28 flat bottom fitting systems).
  • Manifold mount for use with custom manifolds.


Fluid used in LFY Series valves should be filtered to 35 microns or finer.

Wetted Materials

Wetted materials used in the LFY series are:

  • PPS: polyphenelene sulfide
  • LCP: liquid crystal polymer
  • PEEK: polyetheretherkeytone
  • FKM: fluoroelastomer
  • FFKM: perfluoroelastomer