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Airgas® Model C444G320 Stainless Steel High Purity Single Stage Pressure Regulator With 1/4" FNPT Connection And Threadless Seat


Airgas Part #:Y11C444G320-AG

Manufacturer Part #:C444G320

$912.32 /Each

Item Details

  • These 316 stainless steel single-stage high-purity regulators are recommended for non-corrosive analytical, mildly corrosive and process applications where precise flow control is not critical. A specially designed, convoluted Hastelloy® C-22 diaphragm provides good regulating performance and maximum purity integrity without the need for a soft seal, which often can be a source of contamination. Each regulator is capable of withstanding an internal vacuum and is provided with a diffusion-resistant, diaphragm packless outlet valve to maintain system purity. The optional bonnet vent adapter enables venting hazardous gases in the event of diaphragm failure.


  • Convoluted Hastelloy® C-22 Diaphragms provide superior leak integrity without contamination from a non-metallic liner or seal.
  • Bonnet Vent Ports (with optional bonnet vent adapters) allow venting of hazardous gases in the event of diaphragm failure.
  • Standard Threaded Bonnet (with optional collar-mount nuts) for easy panel mounting.
  • High-Flow Capacity permits excellent pressure control for multi-instrument applications.
  • Threadless Seat Design provides longer regulator life.


  • Maximum Rated Inlet Pressure: 4,000 psig
  • Outlet Pressure Ranges: 0-500 psig
  • Flow Capacity: Cv=0.06
  • Ambient Operating Temperature: -40° F to +150° F
  • Designed Leak Rate: Bubble tight
  • Weight: 3 lbs
  • Ports: 1/4" FNPT
  • Delivery Gauge: 0 - 1,000
  • Capacity: 3,700 scfh @ Max Delivery Pressure
  • Decay Inlet Charectaristic: 0.23/100 psi

Product Attributes


» C444G320


» High Purity


» Stainless Steel

Regulator Type

» Single Stage Regulator

Inlet Connection

» 1/4" FNPT

Outlet Connection

» 1/4" FNPT

Max Outlet Pressure

» 500 psig

Gauge Diameter

» 2 1/2"