| 摘要 |
PCT No. PCT/EP95/04633 Sec. 371 Date Jul. 2, 1997 Sec. 102(e) Date Jul. 2, 1997 PCT Filed Nov. 24, 1995 PCT Pub. No. WO96/21818 PCT Pub. Date Jul. 18, 1996In the case of cast housing bodies with highly stressed regions of the housing, and in particular in the case of housings for valves with control pistons, the regions of the housings subjected to high stresses are developed as independent parts from a material which withstands the stressing and forms a cast unit together with the housing body.
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