Models 432.30, 433.30

Diaphragm Pressure Gauge

Process Industry Series Sealgauge Solid Front Case

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  • With liquid filled case for applications with high dynamic pressure pulsations or vibration.
  • Suitable in corrosive environments for gaseous, liquid or highly viscous media.
  • Process industry: chemical/petrochemical, power station, mining, on and offshore, environmental technology, mechanical engineering and plant construction

Product features

  • Threaded or open flange process connections
  • Solid front safety case
  • All stainless steel construction
  • High overpressure safety
  • Ranges from 6" H20 (16 mbar)


    EN 837-3

    4” & 6” (100 & 160 mm)

    Accuracy class
    ± 1.5% of span

    Vacuum / Compound to 300 psi (20 bar)
    Pressure from 6” H2O (16 mbar) to 100" H2O (250 mbar), 6" (160 mm) flange diameter
    Pressure from 6 psi (400 mbar) to 360 psi (25 bar),
    4” (100 mm) flange diameter
    or other equivalent units of pressure or vacuum

    Working pressure
    Steady: full scale value
    Fluctuating: 0.9 x full scale value

    Overpressure safety
    5 x full scale value, max. 600 psi (400 bar)

    Operating temperature
    Ambient: -4°F to +140°F(-20°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) ±0.8% of span for every 18°F (10°K) rising or falling.

    Weather protection
    Weather resistant (NEMA 3 / IP54)-dry case
    Weather tight (NEMA 4X / IP66) -liquid-filled case

    Pressure connection and lower diaphragm housing
    Material: 316L stainless steel
    Lower mount (LM)
    1/2” NPT female

    Case and upper diaphragm housing
    Material: stainless steel
    Case with solid-baffle wall and blowout back and stainless steel bayonet ring

    Diaphragm element
    ≤100” H2O (250 mbar): 316 stainless steel
    >100” H2O (250 mbar): Inconel® (NiCr-alloy)
    All ranges with FPM (Viton) sealing gasket

    Stainless steel

    White aluminum with black lettering

    Black aluminum, adjustable -Type 432.30
    Black aluminum, non-adjustable-Type 433.3z0

    Laminated safety glass with Buna-N gasket

    Case fill
    Glycerine 86.5%

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