MENSI 12 ft Propane Torch Extension Hose — G3/8"-19 Left-Hand Thread, POL Inlet, CSA 350 PSI, 5 O-Rings

This MENSI 12-foot propane torch extension hose connects POL-style cylinder fittings to torches that accept a G3/8"-19 left-hand threaded male connection.

If you need extra reach from a large propane cylinder to a weed torch, heating torch, or other propane tool, this hose provides a long, CSA-rated flexible link built for pressure and outdoor use. It is designed specifically for setups that require a left-hand threaded G3/8"-19 torch connection and will not fit torches or cylinders that use other thread standards. The package also includes five replacement O-rings for the POL inlet to help maintain a good seal over time.

How does this hose attach to my propane cylinder and torch?

The hose has a POL-style inlet (for 50–100 lb soft-nose cylinder valves) and an exit with a G3/8"-19 left-hand external thread sized at approximately 0.656" outside diameter. Attach the POL male fitting to your cylinder and screw the left-hand threaded end onto your torch’s female fitting by turning left to tighten. Confirm both connection types match before installation to avoid leaks or incompatibility.

• POL male inlet for large cylinder attachment
• G3/8"-19 left-hand external thread for torch connection
• External thread OD ≈ 0.656" — measure to verify fit
• Turn left to tighten the torch-side thread (left-hand thread)

Is this hose safe for high-pressure propane use?

The MENSI hose is rated to 350 PSI and carries CSA certification for pressure applications, making it suitable for many low- and high-pressure torch jobs. Even with the rating, always inspect fittings and O-rings before use and tighten the movable nut securely with a wrench. Never operate if fittings remain loose after tightening.

• 350 PSI high-pressure rating supports heavy-duty tasks
• CSA certified material and construction
• Includes five replacement O-rings for the POL inlet seal
• Movable wrench nut lets you lock the connection in place

What should I check before buying to ensure compatibility?

Because this hose is not universal, confirm that your torch accepts a male G3/8"-19 left-hand thread and that your cylinder uses a POL soft-nose connection. Measure the torch-side thread’s outside diameter (about 0.656") and make sure the torch-side fitting is male-threaded with a flare/compression sealing edge. If your torch uses a right-hand thread or a different size, this hose will not fit.

• Verify torch-side thread is male G3/8"-19 left-hand
• Confirm torch thread OD ≈ 0.656" and has flare sealing edge
• Ensure your cylinder valve accepts a POL male fitting
• If unsure, measure or consult torch/cylinder documentation

Who this is for: This 12-foot MENSI extension hose is built for professionals and DIYers who use propane torches from large cylinders and require extra reach without sacrificing pressure performance. It’s ideal for weed control, asphalt/roof heating, metalwork preheating, and other outdoor torch tasks—provided your torch accepts the G3/8"-19 left-hand male thread. If your setup uses different thread types, select a hose matched to those specifications.