| 摘要 |
<p>The valve system comprises a shut-off-, control-, non-return- or circulation valve in a stainless steel casing. The valve seat (151) is directly formed in the casing. The casing is made up of two sections (111, 121) produced by hydroforming and fastened together by gluing, crimping or especially welding. Independent claims are included for: (A) the valve casings; and (B) a method for making the valve system.</p> |
