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Brass welding regulator with two gauges and CGA-580 inlet

Victor

Victor SR450D-580 Single-Stage Heavy-Duty Welding Regulator 5-125 psi 3.5 in

SKU CH-SQ4J-N0333

Single-stage heavy-duty regulator controls inert gas flow from CGA-580 cylinders at 5 to 125 psi with a 3.5-inch brass body and stainless-steel diaphragm

  • TypeSingle Stage, Heavy Duty
  • Single-stage design delivers consistent 5–125 psi outlet pressure
  • Heavy-duty brass body with 3.5 in diameter withstands 3,000 psi inlet
  • Stainless-steel diaphragm ensures reliable inert-gas regulation
  • 5 in dual gauges show supply up to 3,000 psi and working pressure
  • UL 252 listed by ETL for verified safety compliance

Victor SR450D-580 Single-Stage Regulator

The Victor SR450D-580 is a single-stage, heavy-duty welding regulator designed for inert gas supply from a cylinder. It features a brass body with a stainless steel diaphragm and a 3.5 in body diameter. The unit delivers a pressure range of 5 to 125 psi with a maximum inlet pressure of 3,000 psi. It is listed to UL252 by ETL for general purpose applications.

Suited for Inert Gas Cylinder Applications

This regulator suits welders and technicians who require a CGA-580 inlet connection for inert gas cylinders and a 5/8 in.-18 F RH outlet connection. The 2.5 in supply pressure gauge reads up to 3,000 psi. It is not for users needing a multi-stage regulator for more consistent delivery pressure as cylinder pressure drops, nor for applications requiring gas services other than inert gas.

Delivery Range 5 to 125 psi

The 5 to 125 psi delivery range comfortably handles general purpose welding and cutting tasks using inert shielding gases. The single-stage design means outlet pressure will rise as the cylinder empties, requiring periodic adjustment for long runs. It runs out of headroom for processes demanding pressures above 125 psi or for high-flow applications exceeding the regulator's flow capacity.

Highlights

  • Single-stage design delivers consistent 5–125 psi outlet pressure
  • Heavy-duty brass body with 3.5 in diameter withstands 3,000 psi inlet
  • Stainless-steel diaphragm ensures reliable inert-gas regulation
  • 5 in dual gauges show supply up to 3,000 psi and working pressure
  • UL 252 listed by ETL for verified safety compliance

Specifications

BrandVictor
TypeSingle Stage, Heavy Duty

Questions about this item

What cylinder valve does the CGA-580 inlet on this regulator connect to?

The CGA-580 inlet connects directly to standard inert-gas cylinders such as argon, nitrogen or helium.

Will the 5/8 in.-18 RH outlet thread fit my existing TIG torch hose?

Yes, the 5/8 in.-18 RH outlet is the common fitting for inert-gas welding hoses and torch connections.

How can I confirm the regulator is delivering the set pressure after installation?

Watch the 2-1/2 in. delivery-pressure gauge; it should read between 5 and 125 psi as you adjust the knob.

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