Victor SR 450D-540 Single Stage Regulator

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Victor® SR 450D-540 Heavy Duty Oxygen Regulator

 

The Victor SR 450D-540 (Part Number 0781-0527) is the premier choice for high-capacity, heavy-duty industrial gas control. Designed for professionals who require maximum flow and durability, this single-stage regulator is built to handle the most demanding cutting, welding, and heating applications.

Featuring a 3-1/4" diaphragm and a die-forged brass body, the SR 450 series is engineered to deliver stable pressure even under high-volume demand, making it the standard for structural steelwork and heavy fabrication.

Key Features

  • Maximum Flow Capacity: Specifically engineered for heavy-duty applications requiring high gas volumes.
  • Superior Durability: Constructed with a die-forged brass body and a high-strength housing cap.
  • Extra-Large Diaphragm: A 3-1/4" (82.6 mm) stainless steel diaphragm provides exceptional sensitivity and pressure consistency.
  • Precision Control: Equipped with a Delrin cap bushing and a stainless steel ball in the adjustment key for smooth, effortless pressure settings.
  • Enhanced Safety: Includes a stem-type seat mechanism and an external self-reseating relief valve for over-pressure protection.
  • High-Visibility Monitoring: Large 2-1/2" (63.5 mm) brass gauges for clear pressure readings.

Specifications

Model Number SR 450D-540
Part Number 0781-0527
Gas Service Oxygen
Duty Classification
Heavy Duty / High Capacity
Inlet Connection CGA 540
Delivery Range 5–125 PSIG
Inlet Gauge Range 0–4000 PSIG
Delivery Gauge Range 0–200 PSIG
Diaphragm Size
3-1/4" (82.6 mm)
Outlet Connection
9/16" - 18 RH (M)