Kidde Airsense Stratos 3-4to 10mm Compression Adaptor The compression adaptor is used to connect 10mm capillary tube on to 3/4 pipework. The compression adaptor fits into all standard 3/4 pipework fittings. Aspirating smoke detection system is the network of sampling pipes that actively transport air from a protected area to the detector. ABS (Acrylonitrile Butadiene Styrene) is a homogenous material with good chemical resistance and high impact strength. Other beneficial features are its suitability for use at low temperatures (-40C) and its ease of jointing.