Patent ID: 6543468
Filing Date: 2003-04-08
Classification: F16K,G01M,Y10T

Abstract:
A measuring instrument installation on a circuit that can be subjected to a medium under high pressure comprising a measuring instrument with a locking element between the measuring instrument, and said locking element comprising a ball valve (18) which further comprises:a) a valve body comprising ball housing (1) having a process circuit connection (2) and a measuring instrument connection (3); b) a ball (7) positioned in said housing so that said ball can be rotated back and forth in the ball housing (1) between a pass position (6) and a lock position, said ball (7) being provided with a passage bore (8) that can be placed in the pass position (6); c) two ball seats (12, 13), said housing disposed with each laying respectively in the direction of the process circuit connection (2) and in the direction of the measuring instrument connection (3), each of said ball seats being provided with a displaceable sliding sleeve (14, 15) spring-loaded and sealed on the ball (7); d) sealing packings (19, 20) pressed in a ring-shaped manner against the ball (7), thereby constituting a ball space (25) between the sealing packings (19, 20) that is not directly sealed off from the process circuit connection (2) and the measuring instrument connection (3); and, e) the ball housing (1) being provided with a relief/bleed connection (26) with a connected relief/bleed valve (27) capable of being actuated in close proximately to the ball housing (1).