Use either straight and angle type globe or gate type hose valves for flow control.
Fire sprinkler roof manifold.
Can i eliminate the roof manifold in the stair that accesses the roof by providing an additional fhv at the top of the standpipe on the intermediate landing.
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The purpose of the roof manifold is to test the standpipe demand and test fire pump at roof if applicable.
Outlet manifold fppi s outlet manifolds are typically used as a roof outlet connection for fire service professions.
Documents and resources technical data sheets.
I dont think you need to have a combination system on a 2 storie building.
One link of many in the chain of wildfire survival in the face of an advancing wildfire a structure with a properly implemented fire smart program in combination with a rooftop sprinkler system has a survival probability of above 90.
Cast brass construction with a female npt inlet and male npt or nst outlets.
I have a standpipe on the intermediate landing of each of the two stairs with a fire hose valve per the ahj.
Hose stations accessories.