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Eclipse Proportional Isolation Valve

A proportional isolation valve like no other...

Utilizing the industry's most robust and powerful miniature linear actuator, the patented  stepper-controlled Eclipse proportional isolation valve leads the industry in performance and durability. This valve is ideal in critical applications for liquid and gas delivery, medical, analytical and industrial automation requiring ultra fine resolution and excellent repeatability. In addition, the unique design allows for custom flow profiles.

Eclipse Proportional Isolation Valve

Primary Eclipse Benefits:

  • Leak free (<0.05 sccm)
  • Excellent linearity (<4% of full-scale)
  • Fast response (<2 ms reaction time)
  • Cycle life of typically >1 million
  • Repeatability <0.5% of full travel
  • U.S. Patent No. 10,738,904


Eclipse Proportional Isolation Valve Typical Flow Curves for Air and Water

Medium   Liquids and gases  

Typical Cycle Time for Full Travel   1.1 seconds at 1,000 steps per second

Wetted Material   Ceramic (others depending on porting option)

Pressure Range   Vac to 30 psig (highly modifiable)

Proof Pressure (Overpressure)   50 psig

Flow Range   Air: 0 to 7 l/min -0/+10% (0.247 scfm) @ 30 psig
Water: 0 to 190 ml/min -0/+10% (0.0067 scfm) @ 30 psig

Flow Resolution   0.19 ml/min water and 0.007 l/min air max @ 30 psig per full step depending on pressure

Position Resolution   0.00006"

Ambient/Environment   32 to 180˚F

Driver   Bipolar chopper drive required

Supply Voltage to Motor Driver  

20 VDC @ 30 psig

Current/Phase   0.49 amps

Mounting   Manifold or flat bottom (ZDVF)

Power Consumption   2.5 watts nominal only during adjustment, zero power consumption to maintain position


Valve: None
Port: FKM standard, EPDM and others upon request

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