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Straight Storz Adapter (FDC) | 5" (127 mm) Storz x 4" (101.6 mm) FNPT

5" (127 mm) Storz x 4" (101.6 mm) FNPT Straight Storz Adapter is a durable, single-piece fire department connection for NPT-threaded fire sprinkler or standpipe systems. These anodized aluminum FDCs provide a corrosion-resistant, heavy-duty alternative to standard FDCs where large diameter hose is preferred.MADE IN THE USA!
SKUAdapter TypeInletOutlet
5STRZS4Straight5" (127 mm) Storz4" (101.6 mm) FNPT
T-6 Heat-Treated AluminumUsually Ships Within 48 Hours

Product Description

5" (127 mm) Storz x 4" (101.6 mm) FNPT Straight Storz Adapter makes an ideal fire department connection (FDC) for fire sprinkler or standpipe systems with pipes utilizing National Pipe Thread (NPT). This Storz fire department connection threads directly to 4" (101.6 mm) male NPT pipe, serving as a compact, all-in-one alternative to standard threaded FDCs.

When used as an FDC, each 5" (127 mm) Storz x 4" (101.6 mm) FNPT Straight Adapter can provide a supplemental supply of water to fire protection systems in an emergency. On an NFPA-compliant fire sprinkler or standpipe system, each FDC requires an identification plate and protective cap (sold separately).


This Straight Storz adapter has a black-dyed exterior and non-dyed interior that are hard-coat anodized in accordance with military standard MIL-A-8625 Type III for a smooth and durable finish. This Storz adapter is within the NFPA 1963 Standards and Tolerances for Fire Hose Connections, and may be installed in accordance with NFPA 14, which permits the use of FDCs with large diameter hose when approved by the authority having jurisdiction (AHJ).

More Information
FDC TypeStorz
FDC OrientationStraight
Number of FDC Inlets1
FDC Inlet Size5"
FDC Inlet ThreadsStorz
FDC Outlet Size4"
FDC Outlet TypeThreaded
FDC Outlet ThreadNPT
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