Operating and outlet nozzle cap nuts shall be of solid pentagonal shape. The pentagon shall measure fifteen-sixteenths to thirty-one thirty-seconds inch on side, 1 1/2 inch from point to flat. All barrels above ground shall have a prime coat and painted with two coats of fire hydrant yellow paint.
What size fittings are on a fire hydrant?
A standard fire hydrant has two 2.5 inch- hose connection nozzles with 7.5 threads per inch, and one 4.5 inch-pumper connection nozzle with 4 threads per inch. The hose connection nozzle, compared to the pumper connection nozzle, has a lower discharge pressure and can be used directly to fight fires.
Why are fire hydrant bolts pentagons?
The faces that define this polyhedron are pentagons. The 5 sided characteristic of the nut was chosen to offer a measure of tamper resistance. Hydrants can be dangerous, and only firefighters and other authorized persons should open a fire hydrant.
What size wrench do you need to open a fire hydrant?
Heavy-duty adjustable fire hydrant wrench with an overall length of 18 inches. Spanner for pin lug and sensible (rocker) lug couplings, 1 1/2″ thru 6″. Notched to fit 1 1/4″ square hydrant nut for pentagon hydrant nuts up to 1 1/2″ from point to flat plated iron head, 7/8″ plated steel handle.
Can a pipe wrench open a fire hydrant?
Anyone with a simple pipe wrench can open a hydrant and gain access to the water supply.
Is fire hydrant water drinkable?
Hydrant flushing is necessary to test the hydrants to make sure adequate flow and pressure is available. Flushing is also done to remove sediment from the pipes in order to maintain water clarity and quality in the distribution pipes. Your water is safe to drink.