QBX Industrial Electronic Pressure Regulator
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The QBX pressure control valve is a closed-loop electronic air pressure regulator designed to work in almost any environment.
- Full vacuum to 175 PSI
- Wide range of analog and digital command signal options
- Analog monitor out signal for data acquisition standard
Tested to almost 1 billion cycles, the QBX can last a very long time without the need for re-calibration and maintenance. The ease-of-use and operating life paired with rugged, durable construction means the QBX outlasts competitor products by far. Please note, proper understanding of the application is required to experience this type of longevity.
Like most of our products, the QBX 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.
Max Flow (SCFM)
Max PS (PSI)
- Technical Specs
- Downloads & Links
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|Pressure Range||Vacuum thru 175 PSI (12 Bar)|
|Max Flow||1.2 SCFM (34 LPM)|
|Port Size||1/8″ NPT (BSPP Available)|
|Durability||Immune to shock & vibration (up to 20 Gs)|
|Operating Temps||32-158°F (0-70°C)|
Frequently Asked Questions
The QBX series can pilot various volume boosters to control a wide range of fluids and medias, indirectly. Learn more about QB2 Volume Air Booster.
These gases can be controlled directly with QBX series:
All noble gases, including: Helium, Neon, Argon, Krypton, Xenon, Radon
- Carbon Dioxide
- Compressed Air
- Nitrous Oxide
- Oxygen – with O2 cleaned brass manifold option
The QBX controls air pressure in proportion to an electric command signal. QBX is available with these command options:
The QBX series comes standard with a monitor output signal for simple data acquisition. The QBX is available with these monitor options:
- No Monitor
- 0 to 10 VDC
- 0 to 5 VDC
- 1 to 5 VDC
- 4 to 20 mADC (sinking)
- 4 to 20 mADC (sourcing)
The QBX full scale pressure range can be configured in any of the below units of measure:
- Millimeters Hg
- Inches Hg
- Inches of water column
- Millimeters of water column
- Centimeters of water column
- Torr – Must be absolute reference unit
At Proportion-Air, we always build our products to whatever pressure range our customer needs. We do not offer “off-the-shelf” pre-set pressure ranges for the QBX. If you want your QBX setup for 0-175 PSI control, no problem. But if you want your QBX setup for 2.1 bar to 6.75 bar, no problem. There is no additional cost for custom calibrated pressure ranges.
The lowest pressure the QBX can be calibrated to is: 0 to 2 Inches of water column. That is a full scale range of 0 PSI to 0.073 PSI with ±0.2% accuracy!
Absolutely! The QBX series can be calibrated to control from atmosphere to full vacuum or vacuum through positive pressure in the same device.