Model 232.25

Bourdon Tube Pressure Gauges

Hinged Ring Process Gauge
316SS Wetted Parts

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  • Pressure monitoring panels
  • Suitable for corrosive gaseous or liquid media that will not clog the pressure system or attack 316L SS parts.
  • Process industry: chemical/petrochemical, power stations, mining, on and offshore, environmental technology, mechanical engineering and plant construction

Product features

  • Hinged ring for access to adjustable pointer
  • Positive pressure ranges to 20,000 psi (1,600 bar)
  • Durable aluminum case


    ASME B40.100

    4½” & 6” (115 & 160 mm) dial size

    Accuracy class
    ± 0.5% of span(ASME B40.100 Grade 2A)
    ± 1.0% of span(ASME B40.100 Grade 1A)
    (for range 0/20,000 psi)

    Vacuum / Compound to 200 psi (16 bar)
    Pressure from 15 psi (1 bar) to 20,000 psi (1,600 bar) or other equivalent units of pressure or vacuum

    Working pressure
    Steady: full scale value
    Fluctuating: 0.9 x full scale value
    Short time: 1.3 x full scale value

    Operating temperature
    Ambient: -40°F to +140°F(-40°C to +60°C)
    Medium: +212°F (+100°C) maximum

    Temperature error
    Additional error when temperature changes
    from reference temperature of 68°F (20°C) ±0.4% of span for every 18°F (10°K) rising or falling.

    Weather protection
    Weather resistant (NEMA 3 / IP54)

    Pressure connection
    Material: 316L stainless steel
    Lower back mount (LBM)
    1/4” or 1/2” NPT with M4 internal tap

    Bourdon tube
    Material: 316L stainless steel
    ≤ 1,000 psi (70 bar): C-shape,
    > 1,000 psi (70 bar): Helical

    Stainless steel. Internal stop pin at 1.1 x full scale

    White aluminum with black lettering, stop pin at 6 o’clock

    Black aluminum, adjustable

    Black-painted aluminum with 3 threaded mounting bolts. Solid front, blowout back safety case. 304 stainless steel blowout back plate.

    Hinged ring
    Black-painted steel with knurled clamping screw

    Flat instrument glass with silicone rubber gasket

    Mounting bolts
    10-24 UNC threads - 4½"
    ¼ - 20 UNC threads - 6"

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