Pressure Comparator


Responding to the need for high-pressure products, Crystal Engineering, a leader in high-end portable pressure calibrators and digital test gauges, has introduced the new GaugeCalHP pressure comparator for test and calibration applications up to 15,000 psi. The highly versatile device is suitable for use with water or oil, either in the field or the laboratory, and is compatible with most-large size pressure gauges.  

The GaugeCalHP is designed with Crystal pressure fittings (CPF), a reservoir relief valve, and other safety features that make it the safest comparator available. The patent-pending CPF system adds a unique O-ring sealing system that permits leak-free connections without tools and a self-venting weep hole that alerts users before they disconnect from a pressurized system. CPF fittings and hoses come with an industry first 4:1 safety factor. 

Key features of the GaugeCalHP include a fine adjust that is easy to use at 15,000 psi, a connection fitting with quick alignment swivel capability, and a pivoting manifold that rotates to fit large-size gauges. To increase stability, the device’s reservoir can be used to quickly add a small amount of pressure to bleed air out of the CPF weep hole.  A no mess, drip tray captures excess fluid.


  • for test and calibration applications up to 15,000 psi
  • suitable for use with water or oil
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