Harris HP722C Regulator, Built for Your Gas (CGA Specified at Quote)
The Harris HP722C is Harris’s two-stage ultra high purity regulator for high purity applications. Tell us what gas or CGA you require so we can make it happen. Dual stage, plated brass barstock construction for lab use with gas chromatography, laser gas systems and other tasks.
How to get a quote
Call 888-641-2267 or use the Chat with us button for a quote. Tell us your gas and anything else we should know, such as the CGA number stamped on your cylinder valve or a different delivery range. You can also contact us by email. Harris offers the HP722C with CGA 296, 300, 320, 326, 346, 350, 510, 540, 580 and 590 inlets. Not sure which CGA you have? See our CGA Charts.
We also list the most common connections as individual products:
- CGA 320 for carbon dioxide
- CGA 346 for USP medical air
- CGA 350 for hydrogen and flammable gases
- CGA 540 for oxygen
- CGA 580 for nitrogen, argon, helium
- CGA 590 for industrial air
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
- Maximum inlet pressure 3000 psig, except CGA 300 and 510 versions, which have a 400 psig inlet gauge
- 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
Harris delivery ranges for this model: 0-15, 0-50, 0-125, 0-250 and 0-500 psig. Tell us your working pressure and we will help you pick a range with your setpoint near the middle.
Typical applications
- Gas chromatography (GC) and process analyzers
- EPA protocol gases and emissions monitoring
- Laser gas systems and research samples
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.
