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Victor QDA-20 Fuel Gas Quick Disconnect and Arrestor Set

$338.05/EA $241.42/pack of 1 only $241.42/EASave 29%

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OVERVIEW

Victor QDA-20 Fuel Gas Quick Disconnect & Flashback Arrestor (0657-0003)

Upgrade your oxy-fuel setup with the Victor 0657-0003 (QDA-20), the ultimate combination of safety and convenience for fuel gas lines. This assembly is designed to streamline your workflow while providing essential protection against the hazards of oxy-fuel processes. Whether you are using Acetylene, Propane, or other fuel gases, the QDA-20 ensures that your equipment remains safe and your operations remain efficient.

Uncompromised Safety

Flashbacks are a serious risk in welding and cutting. The Victor QDA-20 comes equipped with a high-performance flashback arrestor that prevents flames from receding into the gas supply equipment. It also features a reverse flow check valve to prevent gas backflow. These safety mechanisms are critical for compliance with safety standards and for the protection of the operator. Furthermore, the "Fuel Gas" designation is strictly enforced through industry-standard Left-Hand (LH) threads, making it physically impossible to connect this device to an oxygen line, thereby eliminating the risk of catastrophic cross-connection.

Maximize Productivity

Time is money in the welding industry. The quick-disconnect feature of the QDA-20 allows welders to connect and disconnect torches from hoses instantly. The positive-lock mechanism ensures a secure, leak-proof seal when connected, and the automatic shut-off valve engages immediately upon disconnection. This is ideal for shops where equipment is frequently moved or where multiple torch types are used with a single gas supply line. No more fumbling with wrenches or stripping threads; simply snap it in and get to work.

Victor Durability

As part of the Victor Technologies family, this product is manufactured to the highest standards of quality. The solid brass construction resists corrosion and physical damage, ensuring a long service life even in tough environments like shipyards, construction sites, and fabrication plants. The 0657-0003 fits standard B-Size (9/16"-18) fittings, making it a universal upgrade for most standard oxy-fuel rigs.

Additional Information
Gas Service:Fuel Gas, Acetylene, Propane, Natural Gas, Propylene
Connection Type:9/16"-18 LH, B-Size, Quick Connect
Material:Brass
Model:QDA-20
Product Type:Flashback Arrestor, Quick Disconnect
Thread Direction:Left-Hand
Safety Features:Built-in Flashback Arrestor, Reverse Flow Check Valve, Automatic Gas Shut-off
Packaging Description:pack of 1

INCLUDED

  • 1 x Male Plug (Torch/Regulator side)
  • 1 x Female Socket (Hose side)
  • Integrated Flashback Arrestor
  • Integrated Reverse Flow Check Valve
  • Instruction Manual

APPLICATIONS

  • Oxy-Acetylene Cutting and Welding
  • Heavy-Duty Heating and Brazing
  • Field Construction and Demolition
  • Automotive Fabrication Shops
  • Shipbuilding and Repair
  • HVAC Installation (Brazing lines)

FAQ

This assembly is designed specifically for Fuel Gases such as Acetylene, Propane, Natural Gas, and Propylene. It uses Left-Hand threads to prevent connection to oxygen lines.

Yes, the QDA-20 (0657-0003) features a built-in flashback arrestor and a reverse flow check valve for maximum safety.

The connections are standard B-Size, which is 9/16"-18. Since it is for fuel gas, the threads are Left-Hand (LH).

No. You must use the Oxygen version (QDA-10 / 0657-0002) for oxygen lines. The threads on this fuel unit are reversed (Left-Hand) and will not fit oxygen fittings.

Yes, the assembly has an automatic shut-off valve that stops the flow of gas immediately when the male and female ends are separated.

No, once the assembly is installed on your hose and torch, connecting and disconnecting them is a tool-free, snap-action process.

Yes, the 0657-0003 SKU typically includes the complete assembly (both the male plug and the female socket) required for one line.

Pressure ratings vary by gas type (e.g., Acetylene is limited to 15 PSIG), but the device is rated for standard oxy-fuel operating pressures.
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