Fire Hydrant Threads

The larger out lets sometimes called the steamer nozzles or connections are 4 inch or 4 5 inch nst.

Fire hydrant threads.

Assured flow s hydra eze compound is a premium synthetic food grade non drying thread sealant and anti seize compound formulated with a balanced blend of ptfe and other lubricating solids homogenized into a non melting grease carrier. 3 you may also use this same method to determine the outside diameter od of a hose. The impressions on the paper give the number of threads per inch tpi. Dia thds inch ns national standard follows nst also nh 2 5 7 5 4 5 4 austin tx ns 4 6 charlotte nc ns 4 6 chicago il 4 5.

Seat ring removeable without removing lower barrel. If only a worn thread is available send the male fitting to national fire equipment ltd for an accurate. Anti seize lubricant for fire hydrant hose nozzles. The smaller outlets sometimes called the hose nozzles or connections are 2 5 inch nst.

Forged 316ss pipe fittings socket weld ansi b16 11 2000 3000. Both the odm and tpi are needed. Hydrants have 5 1 4 bonnets upper barrels safety flanges and lower barrels and are marked 5 1 4 even though the main valve opening is 4 1 2. Fire hydrant connections carry hose pumper hose city nom.

4 1 2 m v o. Most fire hydrants have two 2 5 inch hose connection outlets with 7 5 threads per inch tpi and one 4 5 inch pumper connection outlet with 4 threads per inch. The permit will generally require a hydrant meter a gate valve and sometimes a back flow preventer. X 4 tpi threads per inch.

Qrfs carries a wide range of fire hose adapters designed to join fire hose fire hydrants and fire department connections with incompatible thread standards. The hydrant outlets usually have male national standard threads nst to mate with fire hose couplings.