Models 332.30, 333.30

Bourdon Tube Pressure Gauges without or with Liquid Filling

Test Gauge Series, Safety Pattern Version, Class 0.6

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  • Calibration and testing laboratories
  • Suitable for gaseous or liquid media that will not obstruct the pressure system or corrode stainless steel wetted parts

Product Features

  • High accuracy (+ 0.25% of span)
  • Mirror band dial
  • Knife edge adjustable pointer
  • Pressure ranges up to 20,000 psi (1,600 bar)


ASME B40.100 & EN 837-1

6" (160 mm)

Accuracy Class
+ 0.25% of span (ASME B40.100 Grade 3A) - 332.30
+ 0.50% of span (ASME B40.100 Grade 2A) - 333.30

Ranges (All ranges not stocked)
Vacuum / Compound to 200 psi (16 bar)
Pressure from 10 psi (0.6 bar) to 20,000 psi (1,600 bar)
or other equivalent units of pressure or vacuum

Calibration Meduim
≤ 360 psi (25 bar): Gas
> 360 psi (25 bar): Liquid

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) - Dry
               -4°F to 140°F (-20°C to +60°C) - Glycerine Filled
Medium: -400°F (+200°C) maximum - Dry
               -212°F (+100°C) maximum - Glycerine Filled

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.

Pressure Connection
Lower mount (LM)
Material: 316 stainless steel
1/4" NPT or 1/2" NPT

Bourdon Tube
Material: 316 stainless steel
≤ 1,000 psi (70 bar): C-shape,
> 1,000 psi (70 bar): Helical
≥ 15,000 psi (1,000 bar): Helical; Ni-Fe alloy

Stainless steel

White aluminum with black lettering and mirrored band

Adjustable knife-edge, black aluminum

304 stainless steel with stainless steel bayonet ring.
Solid front blow-out back safety case design.
Buna-N blow-out plug

Weather Protection
Weather resistant (NEMA 4 / IP 66)

Laminated safety glass

Window Gasket

Standard Scale

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