Aluminum 1" Female NPSH to 1" Male NPT Threads_NH x NPT San Francisco and some other Model:3159 (6.0 TPI x 3.623 OD) 36R44N Swivel / Rigid_Rigid Female Compatible part number DMH6045F

San Francisco and some other locations use a different thread type or size

National Pipe Tapered is common in plumbing and some industrial uses

They are usually labeled FDC (Fire Department Connection) and/or AUTO SPKR (Automatic Sprinkler)

Handles have been incorporated into the ends of the four straps

A storz suction gasket will seal when two hose couplings or adapters are connected

Aluminum 1" Female NPSH to 1" Male NPT Threads_NH x NPT San Francisco and some other Model:3159 (6.0 TPI x 3.623 OD) 36R44N Swivel Rigid_Rigid Female Compatible part number DMH6045F San Francisco and some other locations use a different thread type or size National Pipe Tapered is common in plumbing and some industrial uses