suurte valandite, sepiste või stantsiste pinna jugapuhastus surve all vedelikujoaga, millesse ei ole lisatud abrasiivmaterjali (vt jugapuhastus; vrd pneumopuhastus; tsentrifugaalpuhastus), a high-pressure technique for cleaning surfaces which relies entirely on the energy of water striking a surface to achieve cleaning effect (see: blast cleaning; compare: airblasting; centrifugal wheel blasting)