Quick Answer: 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.

How big is the nut on top of a fire hydrant?

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 type of threads are on a fire hydrant?

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.

What is the difference between NST and NH threads?

NST also goes by the initials NH or National Hose. It can even be referred to as NHT or National Hose Thread but NST or NH is more common these days. NH = NST. Fire hoses with National Pipe Straight Hose Thread (NPSH) has the same threads per inch as National Pipe Thread (NPT) but the threads do not taper.

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What is the height of a fire hydrant?

4 Set with the top of the posts not less than 3 feet (914 mm) above ground. 5 Located not less than 3 feet (914 mm) from the protected object. 2 Hydrant barrels shall be painted silver. 3 Hydrants shall be marked with a reflective collar, located below the bonnet, and above the connections.

How much does a fire hydrant cost?

Cost of Fire Hydrants:

Generally, the base cost of a fire hydrant including materials, installation and fees is about $6,000. Of course every situation is different and costs of a fire hydrant will vary depending upon line size, location, complexity of installation and other factors.

Is NPT the same as NH?

NST also goes by the initials NH or National Hose. It can even be referred to as NHT or National Hose Thread but NST or NH is more common these days. NH = NST. Fire hoses with National Pipe Straight Hose Thread (NPSH) has the same threads per inch as National Pipe Thread (NPT) but the threads do not taper.

Does NPT fit NPSH?

The male side with NPSH threads will only connect to fittings, nozzles or hoses with NPSH threads. It will NOT thread into a NPT female. For example, a male fire hose coupling with NPSH threads will require a nozzle with NPSH threads.

Is IPS and NPT the same?

National Pipe Tapered (NPT) and Iron Pipe Straight (IPS) are two commonly used thread standards in plumbing. … NPT and IPS nominal sizes are always the same.

Fire safety