| 摘要 |
<p>A spraying head (1) has a water inlet end for connection to a source of water under pressure, a bore (6) for forming the water into a jet, and an orifice (23) across which the water is directed by the bore (6) to cause a reduction in pressure in the orifice (23). A clamp (18, 22) connects the head (1) to a spout (19) on a container for the flowable material. A flexible tube (24) connected to the orifice (23) is insertable through the clamp (18, 22) and the spout (19).</p> |
