Harris GP402 CGA 346 USP Air Regulator
The Harris GP402 is an economy two-stage regulator with a CGA 346 inlet for medical-grade (USP) air. It is Harris’s general purpose brass regulator, sold here in our Economy Application Regulators, and it is an economical way to get steady two-stage delivery for low purity gases.
Gas service: CGA 346
CGA 346 is used only for USP (medical grade) air and breathing air. For industrial or zero air, which uses CGA 590, choose the CGA 590 version instead. The Harris GP402 gives economical, steady delivery for USP air where low purity materials are acceptable.
Specifications
- Two-stage design, brass body with painted die-cast bonnet
- Neoprene diaphragm, which Harris notes gives greater sensitivity
- PTFE seat, protected by a 10 micron nickel-plated sintered bronze inlet filter
- Tamper-proof, self-reseating internal relief valve
- 2″ dual-scale gauges (psi/kPa)
- Outlet pressure: selectable 0-15, 0-50, 0-125 or 0-250 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 0.15; delivery pressure changes only about 0.04 psig for every 100 psig drop in cylinder pressure
- Purity: up to grade 4.0 (99.99%), for low purity applications
- 1/4″ MNPT pipe thread outlet
- Conforms to CGA E-4
Typical applications
- Purging and pressure testing
- Shielding and other industrial-grade, non-corrosive gas supply
- Low to medium pressure lab uses where neoprene is acceptable
What’s included
- Harris GP402 two-stage regulator with CGA 346 inlet
- 2″ dual-scale inlet and delivery gauges
- 1/4″ MNPT outlet
Other ranges and models
Choose your outlet pressure from the Outlet Pressure dropdown above: 0-15, 0-50, 0-125 or 0-250 psig. The 0-125 psig range covers most laboratory delivery pressures. Need a different range? Contact us for a quote.
Compare the same CGA 346 connection in other Harris series:
- Harris HP702 (high purity, up to grade 5.0), CGA 346
- Harris HP722C (ultra high purity, grade 5.0), CGA 346
- Harris HP742 (316L stainless, grade 6.0 and corrosives), CGA 346
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.
