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Harris Specialty Gas Regulator

Discover our premium collection of specialty gas regulators for general-purpose use at WeldingMart. These high-performance regulators are essential for ensuring accurate and consistent gas flow in a variety of applications, from industrial processes to laboratory settings. Designed for durability and precision, our regulators are suitable for a wide range of specialty gases, offering exceptional control and safety.
  • Harris 402C-050-346-A air regulator for welding, brass body, dual gauges, black knob, brass/silver connectors, on white background.

    Harris 402C-050-346-A - 402C050346A - General Purpose Air Regulator

    $439.45 $488.28
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  • WeldingMart logo with bold black and red W, “WELDINGMART,” and “LETS WELD.” Quality welding gear like Harris 402-125-580-E Regulator.

    Harris 402-125-580-E - 402125580E - Argon/Helium/Nitrogen Regulator

    $511.97
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  • WeldingMart logo with bold black/red WM above "WELDINGMART LETS WELD"—official brand for welding tools, gear, and regulators.

    Harris 402-050-580-E - 402050580E - Argon/Helium/Nitrogen Regulator

    $511.97
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  • WeldingMart logo with stylized black and red W, "WELDINGMART" text, "LETS WELD" tagline—ideal for welding tools and regulators.

    Harris 402-050-320-E - 402050320E - Carbon Dioxide Regulator

    $511.97
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  • WeldingMart logo with bold red and black WM, "WELDINGMART", "LETS WELD" slogan, for welding equipment, tools, Harris regulator.

    Harris 402C-125-590-D - 402C125590D - Oxygen/ Nitrous Oxide/ Moisture Regulator

    $523.90
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  • WeldingMart logo: black and red W, inspired by Harris regulator, with WELDINGMART and "LETS WELD" tagline for welding equipment.

    Harris 402-250-320-B - 402250320B - Carbon Dioxide Regulator

    $463.93 $515.48
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  • WeldingMart logo: black and red stylized W, WELDINGMART text, “LETS WELD” tagline; ideal for welding tools and regulators.

    Harris 402-125-350-B - 402125350B - Hydrogen/ Methane/ Propane Regulator

    $646.74
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  • WeldingMart logo with stylized WM, WELDINGMART text, LETS WELD tagline—ideal for Harris 402-015-000-BG welding regulator.

    Harris 402-015-000-BG - 402015000BG - General Purpose Regulator

    $466.77 $518.63
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  • WeldingMart logo with red WM and "MART," gray "WELDING LETS WELD"; highlights Harris gas regulator quality.

    Harris 402-125-350-A - 402125350A - Hydrogen/ Methane/ Propane Regulator

    $563.14
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  • WELDINGMART logo with bold black and red W, tagline LETS WELD, featuring Harris 402-050-580-A welding gas regulator.

    Harris 402-050-580-A - 402050580A - Argon/Helium/Nitrogen Regulator

    $563.14
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  • WeldingMart logo with black and red W, bold WELDING MART text, gray LETS WELD slogan; Harris 402-250-540-BF Regulator experts.

    Harris 402-250-540-BF - 402250540BF - Oxygen Regulator

    $478.38 $531.53
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  • WELDINGMART logo with large black and red W, symbolizing reliable welding equipment—like Harris 402-015-320-BE regulator.

    Harris 402-015-320-BE - 402015320BE - Carbon Dioxide Regulator

    $671.57
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  • Harris 402C-125-540-A Oxygen Regulator for welding features dual gauges, black knob, brass nozzle & hose connector.

    Harris 402C-125-540-A - 402C125540A - Oxygen Regulator

    $599.85
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  • Harris 402C-050-320-A CO2 welding regulator with dual gauges, durable brass connectors, black control knob on white background.

    Harris 402C-050-320-A - 402C050320A - Carbon Dioxide Regulator

    $599.85
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  • Harris 402C-015-580-A welding gas regulator, dual gauges, central knob, brass hose connector for argon, helium, nitrogen control.

    Harris 402C-015-580-A - 402C015580A - Argon/Helium/Nitrogen Regulator

    $599.85
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  • WeldingMart logo: bold black/red “W,” brand name, and “LET’S WELD” tagline—trusted source for welding regulators and equipment.

    Harris 402C-050-540-A - 402C050540A - Oxygen Regulator

    $599.85
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  • WeldingMart logo with stylized W, gray and orange text, LETS WELD tagline; ideal for welding tools and regulators like Harris 402-250-580-B.

    Harris 402-250-580-B - 402250580B - Argon/Helium/Nitrogen Regulator

    $646.74
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  • WeldingMart logo with stylized WM, bold WELDING in black, MART in red, LETS WELD in gray—trusted welding tools supplier.

    Harris 402-015-590-B - 402015590B - Oxygen/ Nitrous Oxide/ Moisture Regulator

    $646.74
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  • WeldingMart logo with stylized W, "WELDINGMART LETS WELD," and Harris 402-015-580-B Argon/Helium/Nitrogen Regulator.

    Harris 402-015-580-B - 402015580B - Argon/Helium/Nitrogen Regulator

    $646.74
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  • WeldingMart logo with stylized black and red W, “WELDINGMART,” and “LETS WELD”—for welding tools, equipment, accessories.

    Harris 402-015-540-B - 402015540B - Oxygen Regulator

    $646.74
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  • Harris 401-125-510P-EK Acetylene/Methyl Chloride Regulator with WeldingMart logo, top welding equipment accessory.

    Harris 401-125-510P-EK - 401125510PEK - Acetylene/ Methyl Chloride Regulator

    $805.28 $894.76
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  • WeldingMart logo with black and red W, "WELDINGMART" text, "LETS WELD" tagline—trusted for welding tools and Harris regulators.

    Harris 401-015-300-AJ - 401015300AJ - Acetylene Regulator

    $1,389.52 $1,543.91
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Reliable Specialty Gas Regulators for General Purpose Use

Discover our premium collection of specialty gas regulators for general-purpose use at WeldingMart. These high-performance regulators are essential for ensuring accurate and consistent gas flow in a variety of applications, from industrial processes to laboratory settings. Designed for durability and precision, our regulators are suitable for a wide range of specialty gases, offering exceptional control and safety. Whether you’re managing oxygen, nitrogen, or other specialty gases, our regulators deliver reliable performance to meet your exact needs. Manufactured by trusted brands like Harris Products, these regulators are built to withstand demanding environments while providing easy adjustments and consistent output. Enhance your gas control systems with our top-rated specialty gas regulators, ensuring both efficiency and safety in your operations. Shop now at WeldingMart for the best specialty gas regulators and experience superior performance in all your general-purpose applications.

Frequently Asked Questions

What makes a 'specialty gas' regulator different from a standard welding gas regulator?
Specialty gas regulators are engineered for high-purity, inert, corrosive, or toxic gases used in laboratories, semiconductor fabrication, and analytical applications. Key differences include: stainless steel or inert-coated internal components to prevent contamination or corrosion, ultra-low internal volume to minimize dead-leg contamination, and tighter pressure-control tolerances. Standard welding gas regulators (argon, CO2) aren't built to these purity standards and can introduce trace contaminants or corrode in aggressive gas streams.
How do I choose the right Harris specialty gas regulator for my application?
The selection depends on four main factors: (1) the specific gas and its chemical properties (corrosive, inert, toxic, flammable); (2) the required inlet and outlet pressure range; (3) the CGA cylinder connection required for that gas; and (4) the desired flow range (in SCFH or L/min). Harris produces a wide range — with 272 products in this collection — organized by gas service. Always match the regulator's listed gas compatibility to your cylinder gas.
What CGA connections are commonly used with specialty gas cylinders?
CGA connections are gas-type specific: CGA 580 is used for non-flammable non-reactive gases like nitrogen, argon, and helium. CGA 320 is the acetylene standard; CGA 326 is for nitrous oxide; CGA 677 is used for some high-purity gas services. The Compressed Gas Association assigns unique connector numbers so each gas can only be connected to the proper regulator. Harris specialty gas regulators are available in these and many other CGA configurations — check the connection specification in the product listing before ordering.
Can I use a Harris specialty gas regulator for both high-pressure cylinder gas and lower-pressure gas lines?
Harris offers both cylinder (high-pressure) and line (low-pressure) regulators in their specialty gas line. Cylinder regulators reduce the full cylinder pressure (often 2,000–3,000 psig) to a working pressure. Line regulators assume the inlet is already at reduced pressure (50–200 psig) from a manifold or central gas system and provide final pressure adjustment at the point of use. Using the wrong type for the application — a line regulator on a full cylinder — creates a serious overpressure hazard.
How do I maintain a specialty gas regulator to ensure it stays contamination-free?
Cap or plug the inlet and outlet when not in use to prevent moisture or particulate ingress. Purge the regulator with the process gas before use after any period of storage. For corrosive gas regulators, follow the manufacturer's specific service interval — some require annual rebuild. Never allow a corrosive gas regulator to sit with process gas trapped inside for extended periods. Always store specialty gas regulators separately from welding gas regulators to prevent cross-contamination.
Are Harris specialty gas regulators approved for use with oxygen or oxidizer gases?
Harris produces oxygen-service specialty gas regulators that are built and cleaned for oxygen compatibility — these are clearly marked as oxygen service. Standard brass welding regulators should not be used with pure oxygen at high purity levels. Oxidizer-service regulators use cleaned stainless steel or oxygen-compatible seat materials, and are often labeled 'cleaned for oxygen service' or 'O2-rated.' Always confirm the oxygen compatibility rating before using any regulator on an oxidizing gas.