2018年6月12日 · How do I figure out the size and threads of a fire department connection that I need? Each fire department connection swivel connects only to hoses with couplings of the right size, threading, and gender.

The most common hose connection standard on FDC inlets is 2.5″ National Standard Thread (NST), which is sometimes also called “fire hose thread” or National Hose Thread (NH or NHT). Nevertheless, certain local jurisdictions use other sizes and connection types, including National Pipe Straight Thread (NPS) or unique regional standards.

NFPA 13R, 13 and NFPA 14 differ slightly in how they each address requirements of the fire department connection. Below is a summary of requirements from the 2002-2019 editions of …

2023年2月6日 · The FDC is sized by one 2 ½ in. inlet for every 250gpm of system demand to a maximum system demand. The maximum number of inlets required on a building is based on whether the building is equipped throughout with automatic fire sprinklers.

2019年8月28日 · Sizing of fire department connection: The size of the pipe for the fire department connection shall be in accordance with one of the following: Pipe size shall be a minimum of 4 in. (100 mm) for fire engine connections. Pipe size shall be a …

2021年4月5日 · NFPA 13 states that for hydraulically calculated sprinkler systems the fire department connection (FDC) pipe can be less than 4-inch diameter, but not less than the system riser. What size should the fire department connection feed pipe be for a 6-inch riser, or an 8-inch riser? Can the FDC pipe still be 4-inch for these larger risers?

2023年4月3日 · The numbers and/or sizes of the connection are determined by the type of systems they serve. For sprinkler only systems, which are usually found in one- to three-story buildings, NFPA 13 (2019) §16.12.3 requires the FDC serving that system to have two 2.5-inch connections unless the following requirements are met:

A fire department connection (FDC) is required as part of a water-based suppression system as the auxiliary water supply. These connections give the fire department the capability of supplying the necessary water to the automatic sprinkler or standpipe system at a sufficient pressure without pressurizing the underground supply.

akable caps are designed to protect female FDC inlets with p. n lugs. They allow quick access when a hose connection is necessary. The caps are made with scored tabs that allow the fire departmen. Color: Red Size: 2-1/2” Type: Pin lug 2-

2017年5月22日 · For most fire sprinkler systems, NFPA 13 requires a 4-inch pipe for the FDC and the FDC is required to have two inlets. There is no other criterion in NFPA 13 requiring more than two...