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6271726 - ESAB A-Size Fuel Gas Reverse Flow Check Valve

Packaging: pack of 1
$82.27/EA $49.29/pack of 1 only $49.29/EASave 40%

Usually ships within 3-5 business days

OVERVIEW

ESAB 6271726 A-Size Fuel Gas Check Valve

Upgrade the safety of your oxy-fuel setup with the ESAB Check Valve A FG. Designed by one of the world's leading manufacturers of welding and cutting equipment, this check valve is an indispensable accessory for anyone operating light-duty gas torches. Safety in welding cannot be overstated, and the prevention of reverse gas flow is one of the primary measures against system failures. This valve acts as a one-way street for your fuel gas, ensuring it travels from the tank to the torch tip without the risk of backing up into the hose line.

Key Features and Benefits

  • Reverse Flow Prevention: Automatically closes if gas pressure reverses, preventing the mixing of fuel and oxygen in the hose.
  • A-Size Fittings: Specifically designed with 3/8"-24 Left-Hand threads to fit light-duty "A" size equipment commonly used in HVAC, jewelry making, and light fabrication.
  • Fuel Gas Specific: Engineered for use with Acetylene, Propane, Propylene, and Natural Gas.
  • Durable Construction: Machined from solid brass for longevity and leak-free performance.

Why You Need Check Valves

Reverse flow can happen for several reasons: a clogged tip, an empty cylinder, or improper pressure settings. Without a check valve, gas from the higher-pressure line can feed into the lower-pressure line. If this mixture reaches a source of ignition, it can cause damage to equipment or injury to the operator. The ESAB 6271726 provides a reliable mechanical barrier against this occurrence. Its low cracking pressure ensures that it does not significantly impede gas flow during normal operation, maintaining a stable flame for your work.

Application and Usage

This unit is sold individually and is intended for the fuel gas side of your equipment (indicated by the notched nut and Left-Hand threads). It is compatible with any standard A-size torch handle or hose coupler. Whether you are repairing delicate parts or running a portable oxy-fuel rig, trusting ESAB's safety equipment gives you peace of mind to focus on the weld. Ensure your kit is up to date and fully protected with high-quality check valves.

Additional Information
Brand:ESAB
Gas Type:Fuel Gas
Connection Type:A-Size (3/8"-24)
Thread Direction:Left Hand (LH)
Packaging Description:1 Per Ea
Material:Brass
Product Type:Reverse Flow Check Valve
Application:Oxy-Fuel Welding & Cutting

INCLUDED

  • 1 x ESAB A-Size Fuel Gas Check Valve
  • Installation Instructions

APPLICATIONS

  • Light-duty Oxy-Fuel Welding
  • HVAC Brazing and Soldering
  • Jewelry Repair and Fabrication
  • Automotive Torch Applications
  • General Maintenance and Repair

FAQ

A-Size fittings use 3/8"-24 threads and are typically found on light-duty torches and hoses. B-Size fittings use 9/16"-18 threads and are standard for most medium to heavy-duty equipment. This product is A-Size.

No, this is a reverse flow check valve only. It stops gas from flowing backward but does not extinguish a flame front. For flashback protection, a separate flash arrestor is required.

No. This valve is designed for Fuel Gas and has Left-Hand (LH) threads. Oxygen equipment uses Right-Hand (RH) threads to prevent cross-connection.

Check valves can be installed at the torch inlet or the regulator outlet. Always follow the flow direction arrow marked on the valve body.

Check your torch's inlet threads. If they are small (approx 3/8 inch diameter) and the fuel side has left-hand threads, it is likely an A-Size connection compatible with this valve.

All valves create a minor pressure drop, but this ESAB valve is designed with low cracking pressure to minimize flow restriction for standard welding and heating applications.

It is constructed from brass, which is the industry standard for gas equipment due to its durability and spark resistance.

This item (SKU 6271726) is sold individually. You would typically need a separate Oxygen check valve for a complete set.