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The Victor 0781-3867 (Model HSR 2535-580) is a medium-duty, single-stage flow meter regulator engineered for the precise delivery of inert shielding gases, specifically Argon and Helium. Designed as part of the HSR series, this unit integrates a regulator and flow metering mechanism into a compact assembly, streamlining gas control for industrial and laboratory applications. The regulator operates with a preset delivery pressure of 25 PSIG, a specification chosen to minimize surge rates at the start of the weld cycle, thereby reducing gas waste and turbulence.
Constructed from a forged brass body and housing cap, the HSR 2535-580 is built to withstand the rigors of industrial environments while maintaining high dimensional stability. The internal mechanism features a stem-type seat and a fabric-reinforced neoprene diaphragm. This diaphragm material is selected for its flexibility and resistance to fatigue, ensuring consistent pressure regulation over the service life of the unit. The regulator is rated for a maximum inlet pressure of 3000 PSIG, making it compatible with standard high-pressure cylinders utilizing a CGA 580 connection.
Filtration and safety are critical components of the HSR design. A bronze sintered inlet filter is incorporated to trap particulate matter before it enters the high-pressure seat assembly, preventing seat contamination and potential failure. Additionally, the unit is equipped with an external self-reseating relief valve. This safety device protects the downstream components and the user by venting excess pressure in the event of a regulator malfunction, then automatically reseating once pressure returns to safe levels. The flow calibration provides a delivery range of 4-18 SCFH for Argon and 10-50 SCFH for Helium, covering the requisite flow rates for most standard MIG and TIG welding procedures.
This regulator is an essential component for systems requiring accurate flow control versus delivery pressure. By maintaining a constant low pressure (25 PSIG) upstream of the metering orifice, the HSR 2535-580 ensures that flow rates remain linear and predictable, which is vital for maintaining weld quality in gas-shielded arc welding processes.
| Additional Information |
|---|
| Brand:Victor |
| Cga Fitting:CGA 580 |
| Item:Flow Regulator |
| Max Inlet:3000 PSI |
| Used On Which Gas:Argon/Weldmix |
| Series:HSR |
| Gas Service:Argon, Helium |
| Delivery Range (Argon):4-18 SCFH |
| Delivery Range (Helium):10-50 SCFH |
| Preset Pressure:25 PSIG |
| Design:Single Stage, Medium Duty |
| Body Material:Forged Brass |
| Diaphragm Material:Fabric Reinforced Neoprene |
| Packaging Description:pack of 1 |
| Max Outlet:38 SCFH |
| Used On Which Gas?:Argon or Nitrogen |
