Instrumentation & Measurement

Maintain utmost precision across your operation with high-quality measurement and instrumentation devices from the leading manufacturers, including gauges, meters, fittings and more. DNOW carries a complete line of instruments and assemblies for measuring pressure, temperature and flow across all liquid and gas applications, including custody transfer, check stations, control loops, batching and more.



  • Mechanical pressure gauges
  • Mechanical temperature gauges and thermowells
  • Diaphragm seal instruments
  • Electronic pressure sensors
  • Electronic pressure transmitters and transducers
  • Electronic temperature sensors 
  • Level sensors and gauges
  • Ultra high-purity pressure gauges
  • Differential pressure gauges
  • OEM/Customized pressure and temperature instruments
  • SF6 gas analyzer and filling units
  • Gauge accessories

Instrumentation Fittings

  • NPT thread
  • Socket weld
  • Butt weld 
  • Single- and two-ferrule design
  • Connection adapters
  • Dielectric Unions 

Instrumentation Valves and Other Products

  • Bleed valves
  • Ball valves
  • Check valves
  • Inline filters
  • Needle valves
  • Lower packing valves
  • Metering valves
  • Relief Valves 
  • Toggle valves
  • Plug valves
  • Purge valves
  • Quick connects
  • Full flow quick connects
  • Tee filters
  • Manifolds
  • Steam Traps 

Instrumentation Hose Assemblies

  • Medium pressure smooth bore PTFE
  • High pressure flexible metal 

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