LHD Series Solenoid Valves

General Specifications

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

Leakage
Maximum of 50 µL/minute of air at 70°F with 5 psig applied to the common port.

Internal Volume

  • 2-Way N.C. Plug-In: 28 µL
  • 3-Way Plug-In: 40 µL
  • 3-Way Face Mount: 72 µL
  • 3-Way Soft Tube Ported: 77 µL

Weight
The 3-Way valves weigh only 4 grams. The 2-Way N.C. valves weigh only 2.5 grams.

Life Expectancy
The valves will typically operate up to 250 million cycles on air, depending on the seal material and application parameters.

Operating Pressure
The valves will operate within the specified pressure range when supplied with the rated voltage ± 5%. The normally closed port 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 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).
    MEAN POWER
    (mW)
    INTERNAL SELF-HEATED COIL TempERATURE
    at 100% Duty, 72°F Ambient ENVIRONMENT
    550 165°F (74°C)
    750 185°F (85°C)
    850 195°F (90°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.
  • Maximum internal coil temperature not to exceed 250°F (121°C).

Storage Conditions (Recommended)

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

Coil Type (DC)

  • Electrical connection can be made without regard to polarity.

Response Time

  • Typical response times in milliseconds are as follows:
    FLUID MEAN POWER
    (mW)
    @ Rated Voltage (10 psig)
    ENERGIZE DE-ENERGIZE
    Air 550 3 4
    750 3 4
    850 3 4
    Water 550 4 5
    750 4 5
    850 4 5
  • Response times can be enhanced with the use of high speed drive circuits.
  • The Quiet Operation design will have a slightly slower response time due to the damping operation.
  • Response times are dependent upon system conditions, power input, environment, etc.

Port Connections
The tube ports are designed for soft, flexible 1/16" ID tubing.

Mounting Information
Surface mount valves use #2 socket head cap screws. Refer to inspection drawings for torque specification.

Filtration
Filtration of 35 microns or finer is recommended.

Electrical Characteristics
The following chart describes the basic electrical characteristics for the LHD Series valves at room temperature. Click here for Solenoid Coil Electrical Characteristics. Click here for special drive circuits.

Swipe to the right for more table information

POWER AT
RATED VOLTAGE (mW)
VOLTAGE
(vdc)
COIL
RESISTANCE
(chms)
INDUCTANCE
(mH)
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