Medicate Valved Inhaler Spacer Specifications: Universal plug (compatible with all market firecrackers). It is available in three shade options small, medium and large â?? soft and non-toxic. Silicone valves, one-way on the nozzle. Capacity 250 ml . Description A spacer is a tube that attaches to the inhaler and holds the medication until you can breathe it in. This makes the device easier to use and helps get the medication into your lungs.