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Model HP722C-250-000-D-1 Ultra High-Purity Electroless Nickel-Plated Brass Regulator


Model HP722C-250-000-D-1 ultra high-purity electroless nickel-plated brass two-stage cylinder regulator, 250 psi, 1/4 in. FNPT port without relief valve


Model HP722C is an electroless nickel two-stage cylinder regulator for constant delivery pressure from full to near empty cylinder conditions. The Model HP722C is suitable for high-purity gas applications, research sample systems gases, process analyzer gases, gas chromatography, EPA protocol gases, laser gas systems and emission monitoring systems.


  • 1-11/16 in.- 316L stainless steel diaphragm eliminates contamination from diffusion or outgassing
  • One-piece encapsulated seat design with 10 micron sintered internal filter to protect the PTFE Teflon® seat from particulate contamination
  • External relief valve is standard
  • Electroless nickel-plated brass body, bonnet and fittings for longer service life
  • 2 in. Electroless nickel-plated brass barstock dual scale easy-to-read gauges (psi/bar)
  • Designed to 1 x 10-9 ccsec. inboard helium leak rate to maintain gas purity levels
  • Maximum inlet pressure 3000 PSIG
  • Conforms to CGA E-4 standard for gas pressure regulators
  • Front or back panel mountable
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Warning -

Cancer and Reproductive Harm -

What's Included

  • Model HP722C-250-000-D-1 Ultra High-Purity Electroless Nickel Regulator

Warranty Information

  • 1 Year



Adjusting Knob ABS black plastic
Body Electroless nickel-plated brass barstock
Bonnet Electroless nickel-plated brass barstock
Certification CGA E-4
Cv 0.06
Delivery Pressure Gauge (PSIG) 400
Delivery Pressure Range (PSIG) 0 - 250
Diaphragm 316L Stainless steel
Equipped With 1/4 in. FNPT port without relief valve
Filter Nickel-plated sintered bronze - 10 Micron
Gauges 2 in. Brass dual scale (psi/bar)
Inlet Connection CGA 000
Inlet Fittings 540
Maximum Inlet Pressure (PSIG) 3000
Mounting Location Front and rear panel
Nozzle Brass
Outlet Gauge 400
Pressure Regulation PSIG/100 PSIG 0.05
Recommended Items/Accessories HP Front Panel Mounting Kit - PN 9100871
Seal PTFE Teflon®
Seat PTFE Teflon®
Seat Return Spring PH 17-7 Stainless steel
Typical Application High purity gas applications
Research sample systems gases
Process analyzer gases
Gas Chromatography
EPA protocol gases
Laser gas systems
Emission monitoring systems


Warranty 1 Year