Harris Model 425 Single Stage AR, HE, N2 Regulator 425-50-580 3000843

Harris Products Group
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Model 425 is a premium, single-stage, industrial regulator that is an ideal choice for most industrial applications. This regulator incorporates a number of Harris features designed to make it a rugged, long-lasting performer, including an exclusive tamper-proof, self-reseating internal HP safety valve and a neoprene diaphragm. The 425 is also available in a multitude of pressure ranges and for all standard industry gases.*Some models are available in clamshell packaging (CS).


  • Single-stage industrial regulator with premium features
  • Designed for rugged, long-lasting performance
  • Easy-to-operate brass "T" screw
  • Brass body and bonnet for longer service life
  • Neoprene diaphragm for better pressure control
  • 2.5" Brass dual scale easy-to-read gauges
  • One-piece encapsulated seat design with internal filter to protect the PTFE Teflon® seat from particulate contamination
  • UL® listed
  • Equipped with a tamper-proof, self-reseating internal safety valve

General Equipment

Adjusting Screw Brass "T" screw
Body Brass
Bonnet Brass
Certification CGA E-4
UL® listed
Cv 0.17
Delivery Pressure Gauge (PSIG) 50
Delivery Pressure Range (PSIG) 0 - 50
Diaphragm Neoprene
Duty Heavy
Equipped With Tamper proof, self-reseating, internal high-pressure safety valve
Gas / Gas Service Argon (Ar)
Helium (He)
Nitrogen (N2)
Gauges 2.5" Brass dual scale (psi/kPa)
Inlet Connection CGA 580
Maximum Inlet Pressure (PSIG) 3000
Recommended Items/Accessories Steel Gauge Guard - Red (Fuel) - PN 4300238
Steel Gauge Guard - Green (Oxygen) - PN 4300239
Adapter - 9/16” – 18 (F) x 5/8" – 18 (F) PN 90000002
Seat PTFE Teflon®
Supply Pressure Gauge (PSIG) 4000

Gas Regulation

Outlet Connection 9/16" - 18 RH
Pressure Regulation PSIG/100 PSIG 0.20


Warranty 7 Years

Custom Field

Series 425
Gas Argon
Gas Helium
Gas Nitrogen
Max Inlet PSIG 3000
Delivery Pressure 0 - 50
Inlet Connection CGA 580
Outlet Connection 9/16" - 18 RH

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