3M Versaflo Valve Pad V-112 may be used with cooling tube V-150 or heating tube V-250 and belts TR-325 (standard), TR-326 (high durability) or TR-327 (easy clean), to create a complete air regulating assembly. Replacement pad for V-100 and V-200.3M Versaflo Valve Pad V-112 may be used with cooling tube V-150 or heating tube V-250, and belts TR-325 (standard), TR-326 (high durability) or TR-327 (easy clean), to create a complete air regulating assembly. The 3M Versaflo Premium Holder V-112 is a replacement part for 3M Versaflo Supplied Air Respirator Vortex Cooling Assembly V-100 and V-100SR, and the 3M Versaflo Supplied Air Respirator Vortemp Heating Assembly V-200. The V-112 can be used with 3M Versaflo TR-325 Standard Belt, TR-326 High Durability Belt, or TR-327 Easy Clean Belt and V-150 Cooling Tube or V-250 Heating Tube. The V-112 pad allows the assembly to be worn vertically or horizontally on the belt. The pad provides cushioning, and thermal insulation from the surfaces of the cooling or heating tubes.