A dispenser comprising: (a) a housing with a feed end and an opposing dispensing end, the feed end having defined therein at least three feed channels (23, 24, 25) and the dispensing end having defined therein at least one dispensing channel; (b) a spool valve (28, 30) mounted in the housing between the feed end and dispensing end, the spool valve comprising a spool with at least three separate flow passages defined through the spool each flow passage having a feed end opening and a dispensing end opening and at least four gasket grooves (38a - 38d) defined circumferencially around the spool in which a gasket (100a - 100d) resides so that each gasket presses against the spool and housing to form a seal around the circumference of the spool with a gasket groove defined on each side of the three flow passage openings and a gasket in each of the four gasket grooves; (c) a deformable sealing plug in at least two feed channels (23, 24) positioned so as to be in a sealing orientation with the housing about the feed channel so as to prevent fluid communication through the feed channel around the sealing plug, the sealing plug having opposing spool and feed ends and a flow channel extending through the sealing plug and through the opposing ends, wherein the spool end of the sealing plug is pressing against and is in sealing contact with the spool, the entire sealing plug being elastomeric and deformable; (d) a nipple in each of at least the two feed channels of the housing containing sealing plugs and extending inside and out from the feed end of the feed channels, the nipples having opposing entrance and exit ends and a flow channel extending through each nipple, including through the exit and entrance ends, the nipples oriented such that the exit end of a nipple presses against the feed end of a sealing plug within the feed channel of the housing and such that the flow channels of sealing plug and nipple are in fluid communication, the nipples being free of screw threading that screws the nipple into the feed channel; wherein the spool can reversibly rotate between: (i) an open position where each of three passages through the spool aligns in fluid communication with a feed channel and the dispending channel of the housing with at least two of the passages in the spool achieving fluid communication with a flow channel of the housing through a flow channel of a sealing plug and nipple; and (ii) a closed position where the passages through the spool are not in fluid communication with a flow channel of the housing. (a) a housing with a feed end and an opposing dispensing end, the feed end having defined therein at least three feed channels (23, 24, 25) and the dispensing end having defined therein at least one dispensing channel; (b) a spool valve (28, 30) mounted in the housing between the feed end and dispensing end, the spool valve comprising a spool with at least three separate flow passages defined through the spool each flow passage having a feed end opening and a dispensing end opening and at least four gasket grooves (38a - 38d) defined circumferencially around the spool in which a gasket (100a - 100d) resides so that each gasket presses against the spool and housing to form a seal around the circumference of the spool with a gasket groove defined on each side of the three flow passage openings and a gasket in each of the four gasket grooves; (c) a deformable sealing plug in at least two feed channels (23, 24) positioned so as to be in a sealing orientation with the housing about the feed channel so as to prevent fluid communication through the feed channel around the sealing plug, the sealing plug having opposing spool and feed ends and a flow channel extending through the sealing plug and through the opposing ends, wherein the spool end of the sealing plug is pressing against and is in sealing contact with the spool, the entire sealing plug being elastomeric and deformable; (d) a nipple in each of at least the two feed channels of the housing containing sealing plugs and extending inside and out from the feed end of the feed channels, the nipples having opposing entrance and exit ends and a flow channel extending through each nipple, including through the exit and entrance ends, the nipples oriented such that the exit end of a nipple presses against the feed end of a sealing plug within the feed channel of the housing and such that the flow channels of sealing plug and nipple are in fluid communication, the nipples being free of screw threading that screws the nipple into the feed channel;