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Miller® Low Pressure Nitrogen Three Stage Regulator, CGA 580

Airgas Part #:MIL16391

Miller Electric Manufacturing

Manufacturer #:16391

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$1,130.98 /Each
Package Size: 1 Each
$1,130.98 Each
$1,130.98 Each

Typically in Stock

Item Details

  • Miller® Three-Stage Nitrogen Blanketing Regulator, .5 PSIG - This preset three-stage regulator is specially designed to deliver a highly accurate and consistent low-pressure supply of nitrogen to oil-filled power transformers. The regulator will deliver and maintain 0.50 PSIG in the head space of oil-filled transformers. A built-in self-relieving valve set at 8 PSIG protects the system from over-pressurization due to temperature variation. Both models come with rapid-fill bypass pressure valve allowing rapid filling of the transformer with 6 PSIG of pressure.


  • The highly reliable design provides constant outlet pressure and flow
  • Brass, aluminum and plated zinc construction provides corrosion resistance resulting in longer field life
  • Adjusting screws are concealed to prevent tampering
  • Tubes are made of shatter-resistant polycarbonate resin and feature multiple scales
  • Miller-Smith’s exclusive ball-centering flow tube provides accurate flow readings even if the tube is tipped
  • This ensures good weld quality and gas savings
  • Non self-centering flow tube ball tends to float off center
  • Actual gas flow can be up to 2-1/2 times greater than is indicated
  • Note: Self-centering ball guide available on 16530 and 16531 models only
  • Low pressure nitrogen gas blanketing of oil filled sub-station power transformers

Product Attributes

Regulator Type

» Three Stage Regulator

Gas Service

» Nitrogen » N

Delivery Rate

» .5 psig

Inlet Connection

» CGA 580


» Low Pressure

Outlet Connection

» 5/8"" - 18 (RH Female)

Gauge Diameter

» 2"