Zero-Bleed Precision Pressure Regulator



  • No Bleed Rate to Atmosphere
  • High Precision output pressure control
  • Max Flow Capacity of 480 LPM
  • Quiet Operation
  • Bubble tight seal when deactivated; can be used as shut-off valve

The Precision Pressure Regulator, is a single-turn, high accuracy pressure regulator for air and gases. The regulator incorporates two internal proportional valves, offering significant improvements over other mechanical pressure regulators. The Precision Pressure Regulator’s unique, dual proportional valve design eliminates bleed to atmosphere, and offers true zero pressure output when deactivated. The internal proportional valves maintain regulated pressure with varying flow rates, meaning changes in supply pressure do not affect the downstream output pressure. Additionally, an internal microprocessor assists in maintaining precision output pressures during dynamic pressure changes to the system.

The incorporation of the proportional valve design and an internal microprocessor means that the regulated output pressure immediately and accurately adjusts to dynamic changes in supply pressure and flow rates. For many other precision regulators, the regulated pressure rises as the inlet pressure drops, and the regulated pressure drops as flow increases. Our precision regulator maintains extremely high accuracy, even if the inlet pressure fluctuates, or the flow rate changes dynamically. This feature incorporates a microprocessor controlled system that finitely adjusts the internal proportional valves to maintain high accuracy in dynamic conditions.


Flow Capacity480 lpm (at 100 psig supply / 20 psig regulated pressures)
MediaAir and Other Inert Gases
Sensitivity1/8" water (3.2 mm)
Bleed RateNone
Total Gas ConsumptionNone
Effect of Supply Pressure VariationNone
Maximum Supply Pressure160 psig
Operating Temperature-20° to 160°F (-29° to 71°C)
Materials6061-T6 Aluminum, Acetal, Brass, Delrin, Stainless Steel,
Plated Steel, Buna-N, FKM (Viton), Nylon reinforced mesh,
phenolic plastic (adjustment knob - no contact with medium)
Weight1.5 lb (635 g)
Port Sizes1/8" and 1/4" NPT
Output Pressure Range0-25 psig (1.7 BAR), 0-40 psig (2.7 BAR), 0-60 psig (4 BAR), 0-120 psig (8 BAR), 0-150 psig (10 BAR)
Mounting OptionsPanel or Bracket Mounted
Power RequirementsIncludes Power Adapter (supplied via standard U.S. wall outlet)



* Omitted for Turn-Key Power Supply option

Terminal Number1*234
Lead Wire ColorBrown WhiteBlue Black
FunctionPower Supply VoltageControl SignalGroundFeedback Signal