In Glass blowing we commonly use a National 3A blow pipe. It's a hand torch. Although they are rated for use with Oxy, they were originally a gas / air torch. They still offer gas / air tips for them. The link below should take you to the torch itself. The second link should take you to the gas /air tips.
If you should get such a set up and have any grief from you local fire marshal because you're not using welding hose, or have the crimp fitting rated for 300 psi, or the tip & torch are not UL listed as a welding torch. Please tell em to KISS YOUR ASS. NFPA 51 does not apply to Gas/ air torches. Only when oxygen is used does it apply as a hazardous material.