Norgren pneufit d d0039 series acetal push in stem tailpiece adaptors norgren d00390604 this stem tail piece adaptor is from the pneufit d range of push in fittings the simple to use device features releasable stainless steel grab rings that offer fast secure assembly and disassembly of nylon pe and pu hoses the connector is ready to use and require no tools for assembly the fitting is manufactured from fda approved acetal material and are widely used in food potable water and beverage