| 摘要 |
The assembly (10) has a fixed valve disc (38) and a corresponding valve seat which moves upon load caused by outlet pressure impinging on the follower in the shutting direction. The follower comprises a ring forming cylindrical barrel (14) which forms, on the one hand, a valve seat body with a valve passage (28) and a valve seat (30) on the side facing the valve disc (38), and on the other hand, a follower which is impinged by the outlet pressure. For balancing pressure a second ring forming cylindrical barrel (16) is connected with the first barrel (14), where the space (18) between the barrels is impinged by the inlet pressure. A central fixed stem (34) carries the valve disc (38) in the inter-barrel space (18). |
