Harris HP723C High Purity Line Regulator
The Harris HP723C is a single-stage ultra high purity line regulator in nickel-plated brass barstock, rated for up to 3000 psig inlet pressure. It sets a steady delivery pressure at the point of use when the supply-line pressure does not vary, which makes it a good fit for chromatography carrier gas lines and lab gas distribution. Its low internal volume barstock design avoids the large cavities of forged-body regulators. Harris rates it for non-corrosive gases up to grade 5.0 (99.999%). See all models in our Line Regulators.
Specifications
- Single-stage pipeline (line) regulator
- Body, bonnet and fittings: nickel-plated brass barstock (the “C” in HP723C means plated: chrome plated in Harris’s 2021 catalog, nickel plated in current production)
- 1-11/16″ 316L stainless steel diaphragm
- PTFE seat and seals; one-piece encapsulated seat protected by a 10 micron sintered filter
- External relief valve, standard on the HP723C
- Inboard helium leak rate 1×10-9 cc/sec
- 2″ dual-scale delivery gauge (psi/bar)
- Maximum inlet pressure 3000 psig
- Delivery ranges: 0-15, 0-50, 0-125, 0-250 or 0-500 psig
- Inlet and outlet: 1/4″ FNPT ports
- Flow coefficient Cv 0.08; pressure regulation 1.8 psig per 100 psig change in inlet pressure
- Weight 2.68 lb
- Front or back panel mountable
Typical applications
- Gas chromatography carrier and detector gas lines
- Research sample systems and process analyzers
- EPA protocol gases and emissions monitoring
- Laser gas systems
Options
Harris also builds the HP723C with a 1/4″ MNPT nipple outlet, 1/4″ MNPT needle valve, 1/4″ FNPT diaphragm valve, 1/4″ or 1/8″ tube fittings, hose barbs, a 1/4″ MNPT or tube fitting inlet, no gauge, no relief valve, or a helium leak certificate. A front panel mount kit (Harris P/N 9100871) is available. Contact us for a quote on any configuration.
Not sure this is the right regulator? Read our Regulator Buying Guide or call 1-888-641-2267 and our team will match the regulator to your application.



