Valve shutdown issue on the main fire protection pipeline
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Can a check valve be installed on the main pipe of the fire protection pipeline? No relevant standards were found, but I personally think there could be problems with the check valve, such as jamming of the check mechanism, which might prevent it from functioning as an emergency backup in fire situations
I’ve never seen a check valve installed on fire protection pipes; could the original poster post a picture?
Fire protection pipelines are circular in design, which is equivalent to a dual-water-supply system; therefore, the check valves do not meet the requirements!
I don’t see any with a check valve; what is there to stop?
A check valve should be installed at the outlet of the fire pump.
Code for Construction and Acceptance of Automatic Sprinkler Systems_GB50261-2005 4.2.3 When not specified in the design, a check valve and a pressure gauge should be installed on the outlet pipe of the fire pump; it is also advisable to install a drain valve for inspection and testing purposes； A pressure gauge and a pressure relief valve should also be installed on the main outlet pipe of the fire pump set ； A buffer device should be installed when mounting the pressure gauge. A stopcock should be installed between the pressure gauge and the buffer device ； The range of the pressure gauge should be 2 to 2.5 times the operating pressure. It can thus be installed in fire protection pipelines.
In a fire protection piping system, check valves can be installed at the pump outlet; there is no need to install them along the pipes. Depending on the size of the pipeline network, stop valves can be installed in different areas within it.
The instructions on floor 7 are very clear; we installed the check valve at the outlet pipe of the fire pump