Harris HP722C CGA 580 Nitrogen, Argon and Helium Regulator
The Harris HP722C is a two-stage ultra high purity (UHP) regulator with a CGA 580 inlet for inert gases: nitrogen, argon and helium. A 316L stainless diaphragm, PTFE seats and a 1×10-9 cc/sec helium leak rate make it the standard choice for grade 5.0 gas chromatography work. See all models in our High Purity Regulators.
Gas service: CGA 580
CGA 580 is the most common laboratory cylinder connection. It fits nitrogen, argon and helium cylinders, as well as the rare gases krypton, neon and xenon, at cylinder pressures up to 3000 psig. Higher-pressure cylinders use different connections (for example CGA 680 or 677), so check the valve before you order.
The Harris HP722C is the standard choice for UHP nitrogen, argon and helium carrier gas. Harris builds the regulator in plain brass (HP722) and in plated brass (HP722C, this listing).
Specifications
- Two-stage design, plated brass barstock body (the “C” in HP722C means plated: chrome plated in Harris’s 2021 catalog, nickel plated in current production)
- 1-11/16″ 316L stainless steel diaphragm
- High purity PTFE seals and valve seats; seat protected by a 10 micron inlet filter
- External relief valve, standard on the HP722C
- Inboard helium leak rate 1×10-9 cc/sec
- 2″ dual-scale gauges
- Outlet pressure: selectable 0-15, 0-50, 0-125, 0-250 or 0-500 psig (choose above); the 0-125 psig range has a 30″Hg vacuum to 200 psi outlet gauge
- Maximum inlet pressure 3000 psig
- Flow coefficient Cv 0.06; delivery changes only about 0.05 psig per 100 psig drop in cylinder pressure
- Purity: grade 5.0 (99.999%) ultra high purity (UHP) gases
- Front or rear panel mountable
- Outlet valve included: 1/4″ MNPT needle valve
Typical applications
- Gas chromatography (GC) and process analyzers
- EPA protocol gases and emissions monitoring
- Laser gas systems and research samples
Dual stage and suitable for lab use with high purity gas applications.
What’s included
- Harris HP722C two-stage regulator with CGA 580 inlet
- 2″ dual-scale inlet and delivery gauges
- Outlet valve included: 1/4″ MNPT needle valve
Other ranges and models
Choose your outlet pressure from the Outlet Pressure dropdown above: 0-15, 0-50, 0-125, 0-250 or 0-500 psig. The 0-125 psig range covers most laboratory delivery pressures. Need a different range? Contact us for a quote.
Compare the same CGA 580 connection in other Harris series:
- Harris GP402 (economy, up to grade 4.0), CGA 580
- Harris HP702 (high purity, up to grade 5.0), CGA 580
- Harris HP742 (316L stainless, grade 6.0 and corrosives), CGA 580
Not sure this is the right regulator? Read our Regulator Buying Guide, check the CGA Charts, or call 1-888-641-2267 and our team will match the regulator to your application.
