cloggable

These are used for applying wet sprays, and should be supplied with one of the several forms of mist-making nozzles, the non - cloggable automatic type being the best.

Home Vegetable Gardening — a Complete and Practical Guide to the Planting and Care of All Vegetables, Fruits and Berries Worth Growing for Home Use 1930

Drippers have been around for awhile, and they can be made to produce fairly round balls, but dimpling can be a problem, and to produce # 7 1 / 2 shot (0.095 "diameter) requires an orfice of about 0.025" (very cloggable) and a fairly critical temperature and cooling liquid.

unknown title 2009