| 摘要 |
<p>A spray coating apparatus especially for dispensing two part foaming compositions comprises two hydraulic diaphragm pumps (1) having regulators (2) for adjusting pressure of a working fluid (3), and a sprayer (5) having a spray nozzle connected, through delivery lines (4), to discharge pipes of the pumps (1). Each delivery line (4) comprises a restrictor (6) such as a spray nozzle or a pierced washer. The invention may be used in the construction industry for protecting structural members against corrosion, heat and sound insulation, etc. <IMAGE></p> |
