Miller-Smith Equipment
Miller-Smith Equipment Oxygen Regulator CGA-540 0-275 psi
Single-stage oxygen regulator with CGA-540 inlet delivers 0–275 psi for cutting, heating and welding
- TypeWelding Supplies
- Precise oxygen flow control for cutting and welding with 0 to 275 psi delivery range
- Safe high-pressure cylinder handling via CGA-540 inlet rated to 3,500 psi max inlet
- Durable brass body with stainless steel diaphragm resists corrosion in demanding shop environments
- Built-in external relief valve and filtered seat protect downstream equipment from pressure spikes
- Clear 2 in gauges show supply pressure up to 4,000 psi for easy monitoring
Oxygen regulator for cutting and welding
The Miller-Smith Equipment oxygen regulator connects to a CGA-540 cylinder valve and delivers a controlled stream for cutting, heating and welding tasks. It is built for professionals who need a reliable single-stage unit with a 0 to 275 psi delivery range. The brass body and stainless-steel diaphragm are designed to withstand a maximum inlet pressure of 3,500 psi.
Replaces worn or missing single-stage regulators
Upgrading is worthwhile when an existing regulator no longer holds a steady outlet pressure or when the inlet seat leaks. The Sure Seat filtered seat and external relief valve help maintain consistent flow and protect downstream equipment. Buyers who need a two-stage design for ultra-stable pressure as the cylinder empties will not find that capability here.
Limited by single-stage pressure droop
As cylinder pressure falls the outlet pressure will rise unless readjusted, which is inherent to the single-stage design. The 2-inch gauges show supply pressure up to 4,000 psi and delivery pressure up to 275 psi. The 9/16 in. -18 RH B outlet fits standard oxygen hoses for the listed applications.
Highlights
- Precise oxygen flow control for cutting and welding with 0 to 275 psi delivery range
- Safe high-pressure cylinder handling via CGA-540 inlet rated to 3,500 psi max inlet
- Durable brass body with stainless steel diaphragm resists corrosion in demanding shop environments
- Built-in external relief valve and filtered seat protect downstream equipment from pressure spikes
- Clear 2 in gauges show supply pressure up to 4,000 psi for easy monitoring
Specifications
| Brand | MILLER ELECTRIC |
|---|---|
| Type | Welding Supplies |
Questions about this item
What cylinder inlet connection does the Miller-Smith oxygen regulator require?
The regulator uses a CGA-540 inlet connection that threads directly onto an oxygen cylinder valve.
How do I install the regulator and what step is often missed?
Thread the CGA-540 nut onto the cylinder valve, tighten with a wrench, then slowly open the cylinder valve to seat the Sure Seat filtered seat before adjusting the delivery pressure.
When should the stainless-steel diaphragm or relief valve be replaced?
Replace the diaphragm if the delivery-pressure gauge creeps above the set point or if the external relief valve vents during normal operation.
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