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QC-RHF-M - Protog Fuel Gas Regulator-to-Hose Quick Connect Male Plug B-Size

Packaging: 1 per each
$50.00/ea $35.71/1 per each only $35.71/eaSave 29%

In stock

OVERVIEW

Speed Up Your Setup with Protog Quick Connects

Stop wrestling with wrenches every time you need to move your rig or pack up for the day. The Protog QC-RHF-M Quick Connect is the ultimate upgrade for your oxy-fuel setup, designed to connect your fuel regulator to your hose with a simple snap. If you are tired of stripping threads or wasting time screwing hoses on and off, this fitting is the solution you have been looking for. It is built tough from solid brass, so it can take the abuse of a busy shop or a job site truck without failing.

This specific fitting is the "Male" side designed for the regulator-to-hose connection on your fuel gas line (Acetylene, Propane, etc.). It features the standard B-Size threads (5/8"-18 Left-Hand) that you find on almost all standard regulators and hoses. Because it is made for fuel, it has the reverse threads and safety notches to make sure you never accidentally plug it into an oxygen line. Safety is built right in, so you can focus on laying beads or cutting steel rather than worrying about your connections.

Using quick connects like the QC-RHF-M also saves your gear. Constant tightening and loosening of hose nuts can wear down the brass threads on your expensive regulators. By installing this quick connect once, you protect those threads permanently. Just snap it in to work, and pop it off when you're done. It’s perfect for welders who switch between different torch lengths, move equipment frequently, or just want a cleaner, more professional looking rig. Upgrade your gas gear today and experience the convenience of instant connections.

Additional Information
Gas Service:Fuel Gas, Acetylene, Propane, Propylene
Connection Type:Quick Connect, Regulator to Hose
Thread Size:B-Size, 5/8"-18
Material:Brass
Gender:Male Plug
Pressure Rating:200 PSIG
Thread Direction:Left-Hand
Packaging Description:1 per each

INCLUDED

  • 1 x QC-RHF-M Fuel Gas Quick Connect Male Fitting
  • 1 x Protective Cap (if applicable)
  • Installation Instructions

APPLICATIONS

  • Oxy-Acetylene Welding and Cutting
  • Oxy-Propane Heating and Cutting
  • Mobile Welding Rigs
  • Structural Steel Fabrication
  • HVAC Brazing Setups
  • Scrap and Demolition Torches
  • Automotive Repair Shops

FAQ

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

B-Size refers to the standard CGA connection size for most welding regulators and hoses, which is 5/8"-18 thread. This is the most common size for industrial equipment.

No. This fitting has Left-Hand threads and is keyed specifically for fuel gas. You need the oxygen version (usually green/Right-Hand thread) for oxygen lines.

You will need a wrench to install the fitting onto the regulator or hose initially. Once installed, connecting and disconnecting the hose from the regulator is done by hand without tools.

The 'M' in the SKU indicates this is the Male fitting (plug). It typically pairs with a female coupler.

High-quality quick connects like the Protog QC-RHF-M are designed to provide sufficient flow for standard welding, cutting, and heating applications without significant pressure drop.

The male plug itself is usually a pass-through device. The check valve or flashback arrestor function is typically housed in the mating coupler or a separate device, though some sets integrate them. Always check your full assembly for safety features.

Fuel gas fittings use Left-Hand threads (counter-clockwise to tighten) as a safety standard to distinguish them from oxygen and inert gas fittings, preventing dangerous cross-connections.
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