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General Specifications

The following specifications apply to all HDI Platform solenoid valves, unless otherwise noted.

Maximum of 50 SµLPM of air at 70°F with pressure applied to the common port. See individual product pages for specific pressure conditions.

Internal Volume


  • Plug-In: 28 µL
  • Face Mount: 34 µL


  • Plug-In: 40 µL
  • Face Mount: 72 µL
  • Soft Tube Ported: 77 µL


  • 2-Port: less than 2.5 grams
  • 3-Port: less than 4.5 grams

Cycle Life
The cycle life of the HDI Platform solenoid valves will vary depending on the seal material and application conditions. Unless otherwise specified, under standard conditions on air, valves with a silicone seal will typically operate across a minimum of 10 million cycles, while valves with an FKM seal will typically operate across a minimum of 250 million cycles.

Operating Pressure
The valves will operate within the specified pressure range when supplied with the rated voltage ± 5%. The normally closed port (Port B) seal is spring loaded, so the pressure applied to this port should not exceed the pressure on the common port or the normally open port (Port A) unless otherwise indicated.

  • Valve Proof Pressure: 2X Normal Rated Pressure
  • Valve Burst Pressure: 3X Normal Rated Pressure

Operating Temperature

  • Ambient operating temperature range is 40°F to 120°F (4°C to 49°C), unless otherwise noted.
  • LHQ Series ambient operating temperature range is 60°F to 120°F (16°C to 49°C).
  • Increasing the operating temperature tends to limit coil performance. The valve duty cycle and energized time must be evaluated for conformance with the maximum recommended operating and coil temperatures.
    550 165°F (74°C)
    750 185°F (85°C)
    850 195°F (90°C)
  • Maximum coil temperature not to exceed 250°F (121°C).

Storage Conditions

  • Temperature: - 40°F to 175°F (-40°C to 80°C)
  • Relative humidity: 85% max., non-condensing

Response Time

  • Typical response times in milliseconds are as follows:
    FLUID At Rated Voltage (10 psig)
    Air 3 4
    Water 4 5
  • Response times can be enhanced with the use of high speed drive circuits. Since the Lo-Lohm design requires a spike and hold drive, response times may be faster than those listed above.
  • The Quiet Operation design (LHQ Series) will have a slightly slower response time due to the damping operation. Particularly after periods of inactivity, first actuation and latch-out response may be longer than the typical dynamic response. If first response is critical in your application, a warm-up cycle may be necessary after periods of inactivity. If faster response or oxygen service is required, please contact The Lee Company to discuss our alternative quiet operation design options.
  • Response times are dependent upon system conditions, power, environment, etc. The response time will typically increase as the ambient temperature decreases. Extended periods of inactivity may also have an impact on the initial response time of the valve.

The HDI Platform solenoid valves feature various material offerings for a wide range of applications. Standard seal material offerings are silicone and FKM, while others such as FFKM, are also available upon request. For the armature and plunger stop, 430 SS is typically used for air and mild gas applications but models with FeCr alloy also allow for additional corrosion resistance, and are therefore optimized for saline or mild liquid compatibility. While The Lee Company can offer material recommendations based on your flow media, it is important and necessary to verify compatibility of our products with the fluid media and conditions of your specific application.

Filtration of 35 microns or finer is required. Click here for additional information.

Electrical Characteristics
The following table describes the basic electrical characteristics for the HDI Platform solenoid valves at room temperature. The valves are intended for operation at the rated voltage ± 5%. Click here for drive circuit schematic recommendations.

550 5 46 30
550 12 262 155
550 24 1042 665
750 5 33 20
750 12 193 130
750 24 766 460
850 5 30 12
850 12 170 70
850 24 675 340