The Coast to Coast SAE Reducing Flare Nut 3/8" x 5/16" is the bit you reach for when one gas line size meets another in the van. The nut steps a 3/8" SAE flare down to a 5/16" SAE flare so you can run smaller copper where space tightens up. The fit suits standard caravan gas layouts where regulators and main feeds sit larger than appliance tails.

The nut matches SAE flare gear already used across most caravan copper gas pipe at up to typical appliance pressures under 7 kPa. The 3/8" end mates to standard feed lines while the 5/16" end ties into lighter branches to cookers and heaters. The simple flare interface keeps joints serviceable with normal spanners and visual seat checks. The size combo makes it a smart buy for spares kits on longer touring setups.

• Coast to Coast SAE reducing flare nut

• Connects 3/8" SAE flare to 5/16" SAE flare

• Suits caravan and RV gas copper pipe systems

• Intended for gas fittings and accessories use

• Compact nut for tight lockers and cavities

• Compatible with standard SAE flare tools and fittings

• Ideal spare part for touring gas repair kits

• Helps transition between different line sizes cleanly

• Part of Coast to Coast copper pipe component range

• Model reference 9999055 within flare nut category

Q: Can this nut be used with soft copper gas pipe in caravans?

Yes, it is intended for use with compatible SAE-flared copper gas pipe in caravan and RV systems. The pipe must be flared with the correct SAE tool before the nut is fitted. A proper flare seat is critical to seal the joint. Always follow local gas installation standards and have the system checked by a licensed gas fitter.

Q: Do I need sealant or tape on the flare joint faces?

No, SAE flare joints seal on the metal-to-metal flare seat, not on the threads. The nut simply pulls the flare tight against the matching seat. Thread tape or paste on the flare contact surfaces can compromise the seal. Only use sealant if required on separate tapered thread sections specified by your gas fitter.

Q: Is this nut suitable as a general spare for touring?

Yes, the 3/8" to 5/16" combination covers many caravan gas layouts that mix line sizes. Carrying one or two spare reducers can help if you need to reroute or repair pipe on the road. Keep them clean and capped in a small container. Store them in your gas spares kit away from dust and grit.

Q: Can I install this nut myself on a fixed gas system?

In most Australian states, fixed LPG gas work on caravans must be done or certified by a licensed gas fitter. While the nut itself is straightforward to tighten, system safety depends on correct flare quality, support, and leak testing. Always check your local regulations. When in doubt, have a qualified tradesperson handle the installation and pressure test.

• Suits SAE flare connections in gas copper pipe systems

• Reduces from 3/8" flare to 5/16" flare connection

• Intended for caravan and RV gas fitting setups using compatible SAE components

• Installation requires suitable flaring tool and matching SAE flare fittings

• Use only with components rated and approved for gas in your specific system