QPV High Resolution Pressure Regulator

QPV High Resolution Pressure Regulator


Need a custom solution? All of our products can be customized to meet your specific application needs. Tell us about your project by filling out the Request Quote form.

QPV ultra high resolution electro-pneumatic closed-loop proportional pressure control valves are ideal for very sensitive applications such as leak testing at low pressures, dispensing and microfluidics flow control.

  • Can be calibrated as low as 0-2 inches of water column
  • Resolution (pressure steps) as high as ±0.005% of full scale calibration in single loop configuration
  • Ideal for constant, low-flow applications too

QPV pressure regulators use a variable orifice valve, which eliminates the digital steps of traditional ON/OFF solenoids.

Like most of our products, the QPV can be modified in numerous ways to meet the most demanding applications. Customizations may change the price of the product. Get a quote for a product customized to your exact needs using the Request Quote tab below.

Accuracy ±
Resolution ±
Repeatability ±
Max P2 (PSI)
  • Technical Specs
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Technical Specs

Pressure RangeVacuum thru 150 PSI (10.3 Bar)
Accuracy±0.2% F.S.
Repeatability±0.02% F.S.
Resolution (max)±0.005% F.S.
Max FlowBased on inlet valve orifice size
Port Size1/8″ NPT (BSPP Available)
DurabilityImmune to shock & vibration (up to 25 Gs)
Operating Temps32-158°F (0-70°C)
Filtration40 Micron


File Request Form: Use this form to request a file other than a standard QPV .STEP file.

Submit the form below to download standard QPV .STEP files

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QPV1 | High Resolution

The QPV1 high resolution pressure controller employs two internal valves. A normally closed valve controls the exhaust and vacuum. A true proportional valve with variable orifice controls inlet pressure. The QPV has an integral function that works to eliminate hysteresis.

QPV2 | High Resolution, Dual Loop

A high resolution, external sense and repeatable electro-pneumatic closed-loop proportional pressure control valve. The 2-loop version accepts a feedback from a wide range of external sensors. With external sense, the QPV2 can accept feedback from load cells, torque cells, pressure transducer, flow transducers, etc…without the need for additional PID tuning. Or, the QPV2 can be mounted on a volume booster with feedback from a Proportion-Air transducer to achieve higher flow rates with high resolution.