| 摘要 |
<p>A dosing gun (500) comprising a revolving valve element (518), arranged fixedly in a first casing (506) which is immovably connected with the gun housing (502). The first casing (506) has a second spring-loaded casing (544) linked to it in a mobile way, which contains a hollow cylinder (514) having on its frontal part valve seats (542, 554). The dosing gun (500) can operate with or without a supply of compressed air.</p> |
