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Brass single-stage welding regulator with dual gauges and CGA-540 inlet

Miller-Smith Equipment

Miller-Smith Equipment 40-175-540S Welding Regulator, Single Stage, CGA-540, 175 psi

SKU CH-WYFJ-HSZJW

Single-stage oxygen regulator with CGA-540 inlet, 175 psi delivery range, 2-inch gauges and UL-listed brass body

  • Product typeWelding Supplies
  • Single-stage design simplifies setup for general welding tasks
  • CGA-540 inlet connects directly to standard oxygen cylinders
  • 175 psi delivery range covers typical cutting and heating needs
  • Brass body with stainless-steel diaphragm resists corrosion and wear
  • UL-listed construction meets recognised safety requirements

Application & Service

This Miller Electric regulator controls oxygen flow from a cylinder in general-purpose welding tasks. The single-stage design delivers a pressure range of 175 psi through a CGA-540 inlet and a 9/16 in.-18 RH B outlet. A 2 in. supply gauge reads up to 4,000 psi while the body handles a maximum inlet pressure of 3,500 psi. The brass body and stainless-steel diaphragm provide durability in workshop environments.

Who It Suits

Welders and fabricators who require a UL-listed, single-stage oxygen regulator with a CGA-540 cylinder connection will find this unit matches their setup. The integrated HB190 Hard Hat gauge guard and external relief valve add protection for the gauges during handling and operation. Buyers needing multi-stage pressure control or a regulator for fuel-gas service should select a different model.

Deciding Specification

The delivery pressure range of 175 psi is the key figure that determines whether this regulator matches the torch and tip requirements for the job. If the welding procedure calls for a different outlet pressure range, this unit will not provide the correct flow characteristics. Always verify the required delivery pressure against the 175 psi rating before installation.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $290.99
Pricier than about 86% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameMILLER ELECTRIC
Product typeWelding Supplies

Questions about this item

How much heat or noise does the 40-175-540S generate during all-day use?

The regulator has no moving parts or power source, so it produces no measurable heat or noise during continuous operation.

What inlet fitting must my gas cylinder already have for this CGA-540 regulator to connect?

The cylinder valve must carry a CGA-540 outlet; the regulator nuts directly onto that standard oxygen-thread connection.

Will the 9/16-18 RH outlet thread mate with the hoses on my older welding torch?

Yes, the 9/16-18 RH outlet is the industry-standard B-size fitting used on most legacy oxygen hoses and torches.

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