Bernzomatic Hand Torch Cylinder Map-Pro. Map-Pro cylinders have a CGA 600 valve with 1.000 - 20 UNEF - RH - EXT thread. Cylinders are designed to meet Title 49 CFR DOT Specification 39 primarily for containing liquefied gas. Can be used to contain ether mixtures, medical gases, inert gases and a variety of calibration gases.