Water trap
·? (stock, blowpipe: water trap [Term not mentioned in available sources]); Wasserfalle [?]; Salivero.
Identical types: 6Recepticle, at the bottom of the blowpipe stock, collecting excess saliva that can be poured out after playing; ➺ Salivero.
A (not too) narrow tube is set in a rubber or cork base and pushed into the mortise, thus creating a ditch; The tube should not hamper the valve.
MacLellan, John: The pipers’ handbook: a complete non musical guide for the piper to all aspects of the great Highland bagpipe, including: maintenance; the altering and setting of reeds; how to set up a bagpipe; information about pipers of past eras; etc., etc. London, 1964, p.8.