| 摘要 |
A multiple purpose flow control arrangement for control of agent flows from up�]stream agent supply system to down�]stream agent consuming fire protection system pipes, which consists of a pipe housing having a pipe cavity with one or multiple openings in the pipe cavity wall and an open and a closed end and a seat surface with an opening having reduced pipe cavity diameter in which a spool body is located, which is characterized with that the closed end of the pipe cavity is closed with an End body, which design determines the agent flow control performance of the device and which, when removed allows the assembled spool body to be removed from the pipe cavity to be serviced. |
