New Product Launch: FITOK Ultra High Purity Pressure Gauges


FITOK Ultra High Purity Pressure Gauges





GP Series Ultra High Purity (UHP) Pressure Gauges, assembled with FITOK® FR face seal fittings, are applicable for gases, liquids and corrosive media in high purity conditions and also in corrosive environments. They are the ideal choice for ultra high purity gas distribution systems of industries including semiconductor, electronic, medical, etc.





  • 2 in. (50 mm), 2 1/2 in. (63 mm) dial sizes
  • Up to 6000 psi measurement range
  • Inner surface electropolished to a roughness Ra ≤ 10 μin. (0.25 μm)
  • Leak rate (helium): ≤ 1x10-9 std cm3/s
  • Lower or center-back mount optional
  • For ultra high purity application


Technical Data



Accuracy ASME B40.1 Grade A
Dial Ranges Compound Gauges Vacuum to 15 psi ~ Vacuum to 300 psi
Positive Pressure Gauges 0 to 15 psi ~ 0 to 6000 psi
Working Pressure Static Pressure 75% of the dial range
Dynamic Pressure 67% of the dial range
Instantaneous Pressure 100% of the dial range
Operating Temperature Ambient Temperature -40 ~ 140 °F (-40 ~ 60 °C)
Media Temperature Up to 212 °F (100 °C)
Protection Class IP 54


Connection Types and Mount Methods



FITOK Ultra High Purity Pressure Gauges Connection Types and Mount Methods


Designator Connection Type
RFR Rotatable Male FR Metal Gasket Face Seal Fitting
FFR Rotatable Female FR Metal Gasket Face Seal Fitting
FR Integral Male FR Metal Gasket Face Seal Fitting


Example: Part Number GP-B50-RFR4-100PB

Ultra High Purity Pressure Gauge, GP Series, center-back mount, 50 mm dial size, 1/4" rotatable male FR metal gasket face seal fitting, dual scale dial range, primary range 0 to 100 psi, secondary range 0 to 7 bar.


In addition to GP Series Ultra High Purity Pressure Gauges, FITOK offers GA Series All Stainless Steel Pressure Gauges, GB Series Safety Stainless Steel Pressure Gauges and GC Series Clean Gas Pressure Gauges. The pressure gauges provide accurate pressure measurement for industrial, high purity and ultra high purity applications. Gauges are available in a variety of pressure ranges, dial sizes, connections and mounting options.


Please see the product catalog for more information. Should you have any questions, please contact us directly and our sales and technical support will reach you soon.

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Last updated June 16, 2020


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