Auxiliary pressure-controlled valve device for use as controlled pressure reducer in system for guiding natural gas, has bypass valve with entrance and exit for fluid, where entrance and exit are connected with switched channel

摘要

The auxiliary pressure-controlled valve device (10) has a bypass valve (20) with an entrance (22) and an exit (24) for fluid. The entrance and the exit are connected with a switched channel (30). A pilot valve (60) is attached at a control entrance (42). A connection (64) is connected with the exit of the bypass valve and another connection (66) is connected with the entrance of the bypass valve by a measuring line (50). A flow channel (70) is provided in the pilot valve, which connects the control entrance of the bypass valve with a downstream side (44) of the bypass valve.