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Stewarts 400 Series Pressure Gauges

Stewarts 400 series gauges are high quality pressure gauges suitable for general purpose applications where reliability is key.  The 400 series of gauges are suitable for gas and liquid media which do not corrode brass or have an environment which is not harsh to Mild Steel o Aluminium case. This model is commonly used on equipment like pumps, compressors, boilers, pneumatic and hydraulic machines.

This gauge has a blow-out protection and weatherproof construction to IP54. All units are manufactured to comply with EN-837, S1 or S3 specification and other regulatory standards including PED 2014/68/EU. Fluidic hold an exclusive partnership with Stewart Buchanan gauges for representation in the UK nuclear industry.


Stewarts 400 Series Pressure Gauges, specifications:

  • Dial sizes available in 63mm, 100mm to 300 mm
  • Case in Mild Steel or Aluminium option.
  • Brass (low pressure) and Stainless Steel (high pressure) pressure element.
  • IP54 construction with ambient conditions of -20…+60°C as standard (contact Fluidic for higher/lower conditions)
  • Complete with top of gauge blow out protection plug
    • All units are manufactured to comply with EN 837-1, S1 Blowout device
      specification and other regulatory standards including PED 2014/68/EU
  • Ranges available up to 2,500barg
  • NACE and exotic material options for wetted parts
  • Vibragauge option (Stewarts’ unique liquid fill technology)
  • Optional electronic contacts can be fitted


Stewarts 400 Series mounting options:

  • Model 411 – Surface mounted
  • Model 412 – Direct mounted (standard option)
  • Model 413 – Flush mount with screw fixing
  • Model 414 – Clamp fixing


Fluidic also offer swivel adaptors for any angle installation of the gauge along with block and bleed isolation manifolds.  We also have in house calibration facilities for lower pressure ranges (currently 20barg max pressure).


Stewarts 400 Series certificate options:

  • Certificate of conformity
  • Group calibration certificate (no readings on cert)
  • Individual calibration certificate (including readings on cert)
  • BS EN 10204 3.1 material certification (including NACE where appropriate)


For low pressure or air (“Pascal” type measurement, commonly used in clean room and air filter monitoring) we recommend the Dwyer Magnehelic Differential Pressure Gauge


Fluidic are recognised partners of Stewarts Group within the UK, particularly within the UK nuclear sector.  Our instrumentation engineers are product trained and are able to help with instrument selection .  Fluidic have been supplying pressure gauges for more than twenty years. Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).


  • Download Stewart Buchanan 400 Series Pressure Gauges Datasheet
  • Download Stewart Buchanan Vibraguage
  • Download Stewart Buchanan Swivel Adapter Datasheet
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