Home Shop 3/16″ x 25′ Twin Welding Hose, Grade R, B-Fitting to A-Fitting
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25316BA25 - 3/16" x 25' Twin Welding Hose, Grade R, B-Fitting to A-Fitting

Packaging: 1 of each
$110.00/ea

Usually ships within 3-5 business days

SKU: DIX25316BA25 Categories: ,

OVERVIEW

Specialized Connection for Precision Welding Setups

The Dixon Twin Hose 3/16 B TO A-1 Fitted 25ft is a specialized gas delivery solution designed to bridge the gap between different standards of welding equipment. In the world of oxy-fuel welding and cutting, equipment connection sizes can vary based on the duty cycle and manufacturer of the torch and regulators. Standard industrial regulators typically utilize "B-size" (9/16"-18) outlets, while lighter-duty, precision torches—often used for jewelry making, HVAC repair, or light fabrication—may utilize smaller "A-size" (3/8"-24) inlets. This hose is pre-configured to connect these two distinct sizes directly, eliminating the need for bulky brass adapters that can add weight to the torch end and introduce potential leak points.

Durable Grade R Construction

Constructed to meet the demands of industrial environments, this twin hose is built with a Grade R rating. This designation indicates that the hose is specifically engineered for use with acetylene gas. The inner tube and outer cover are made from a durable rubber compound that resists abrasion, weathering, and ozone deterioration. The red line is designated for the fuel gas (acetylene), while the green line carries the oxygen, adhering to industry-standard color coding for safety and easy identification. The 3/16-inch inner diameter is perfectly sized for light-to-medium duty applications, ensuring adequate flow rates without the bulk and stiffness of larger hoses.

Convenience and Safety

Safety in welding operations is paramount, and the integrity of your gas delivery system is the first line of defense. This hose features factory-crimped ferrules that provide a superior seal compared to field-repair kits or worm-gear clamps. The 25-foot length offers a practical balance between reach and manageability, allowing the operator to move freely around the workpiece without excessive slack creating a tripping hazard. By integrating the size adaptation directly into the hose assembly, users enjoy a streamlined setup that is lighter, safer, and more efficient to deploy in the field or workshop.

Additional Information
Packaging Description:1 of each, 1 per each
Item:Twin Hose
Used for:Acetylene Only, Acetylene and Propane
Length :25 ft
Diameter (in):1/4", 3/16"
Connection Type:B-Size to A-Size
Hose Grade:Grade R
Color:Green (Oxygen) / Red (Acetylene)
Material:Rubber

INCLUDED

  • 1 x 25ft Twin Welding Hose (3/16" ID)
  • Factory-crimped B-Size Fittings (One End)
  • Factory-crimped A-Size Fittings (One End)

APPLICATIONS

  • Oxy-Acetylene Welding and Brazing
  • Light-duty Metal Cutting
  • HVAC Pipe Repair and Installation
  • Jewelry Making and Metal Sculpture
  • Automotive Body Fabrication
  • General Maintenance and Repair (MRO)

FAQ

B-size fittings are the standard for most industrial welding equipment, featuring a 9/16"-18 thread. A-size fittings are smaller, with a 3/8"-24 thread, typically found on light-duty torches and some small regulators.

No, this is likely a Grade R hose designed for Acetylene. Propane requires Grade T hose, as propane can deteriorate the rubber lining of Grade R hoses over time, leading to leaks.

Typically, regulators have B-size outlets. Therefore, the end of the hose with the larger B-size fittings (9/16"-18) should connect to your regulators.

Green indicates the Oxygen line, which has right-hand threads. Red indicates the Fuel (Acetylene) line, which has left-hand threads (often marked with a notch on the nut).

Yes, for light-to-medium duty cutting torches that utilize A-size fittings, 3/16" ID provides sufficient gas flow. Heavy-duty cutting usually requires 1/4" or larger hoses.

This hose is designed to eliminate the need for adapters if you are connecting a B-size regulator to an A-size torch. If your equipment matches these specs, no adapters are needed.

A-size fittings are visibly smaller than standard B-fittings. If a standard 9/16" wrench is too loose or the thread diameter measures approximately 3/8", it is likely an A-size fitting.

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