beans_again?
Hydrant with bokeh 04
A normal US municipal, wet-barrel fire hydrant is shown. The hydrant offers two 2½-inch (6.35cm) National Hose Thread connections and a 4½-inch (~11.43cm) National Hose Thread connection.
The modern buzzword in public safety is interoperability. The 2½-inch National Hose Thread connections are a United States nationwide standard. There's probably a small number of community water systems that use hose and hydrants with pipe thread or some other non-standard thread. Generally, one could drive a fire engine from Texas to California — or from California to Texas — and your 2½-inch hose should connect to the fire hydrants.
What's the difference between a wet barrel and a dry barrel hydrant? It's just like the name implies: a wet barrel has water inside it at all times. A dry barrel has water only after you turn it on.
Wet barrel:
* Has a valve for each opening or connection.
* Will imitate a geyser if broken off by a collision.
* Has more parts to maintain, (three valves in this case).
* Does not require you to turn off the water to add more hose connections.
* Might freeze in severe cold weather.
Dry barrel:
* Has one valve at the top of the hydrant for all openings or connections.
* Will lay on the ground and get in the way if broken off by a collision.
* Has fewer parts to maintain, (one valve in the base).
* Requires you to turn off the water during a fire to add more hose connections.
* The water below ground would have to freeze to affect the hydrant.
Need to add hose connections during a fire? If you have a dry barrel hydrant, depending on conditions everybody my have to back out of the building until the water is back on.
The fire agency, water company, county, or city water department would make decisions about what kinds of hydrants are used in your neighborhood. In the US, hydrant standards are created by American Water Works Association (AWWA) and National Fire Protection Association (NFPA).
People shown are practicing laying a five-inch supply line (hose) from a hydrant to a simulated fire scene. In my opinion, when you've done this so many times that you don't have to think about the steps, training is complete.
"My girl don't go for smokin'
And liquor just make her flinch
Seem she'll go for nothin'
'Cept for my big five inch"
(Apologies to Fred Weismantel and Aerosmith)
Is your "girl" the fire chief?
Journalism Grade Image
Source: 2,100x2,900 pixel 16-bit TIF file.
Please do not copy this image for any purpose.
Hydrant with bokeh 04
A normal US municipal, wet-barrel fire hydrant is shown. The hydrant offers two 2½-inch (6.35cm) National Hose Thread connections and a 4½-inch (~11.43cm) National Hose Thread connection.
The modern buzzword in public safety is interoperability. The 2½-inch National Hose Thread connections are a United States nationwide standard. There's probably a small number of community water systems that use hose and hydrants with pipe thread or some other non-standard thread. Generally, one could drive a fire engine from Texas to California — or from California to Texas — and your 2½-inch hose should connect to the fire hydrants.
What's the difference between a wet barrel and a dry barrel hydrant? It's just like the name implies: a wet barrel has water inside it at all times. A dry barrel has water only after you turn it on.
Wet barrel:
* Has a valve for each opening or connection.
* Will imitate a geyser if broken off by a collision.
* Has more parts to maintain, (three valves in this case).
* Does not require you to turn off the water to add more hose connections.
* Might freeze in severe cold weather.
Dry barrel:
* Has one valve at the top of the hydrant for all openings or connections.
* Will lay on the ground and get in the way if broken off by a collision.
* Has fewer parts to maintain, (one valve in the base).
* Requires you to turn off the water during a fire to add more hose connections.
* The water below ground would have to freeze to affect the hydrant.
Need to add hose connections during a fire? If you have a dry barrel hydrant, depending on conditions everybody my have to back out of the building until the water is back on.
The fire agency, water company, county, or city water department would make decisions about what kinds of hydrants are used in your neighborhood. In the US, hydrant standards are created by American Water Works Association (AWWA) and National Fire Protection Association (NFPA).
People shown are practicing laying a five-inch supply line (hose) from a hydrant to a simulated fire scene. In my opinion, when you've done this so many times that you don't have to think about the steps, training is complete.
"My girl don't go for smokin'
And liquor just make her flinch
Seem she'll go for nothin'
'Cept for my big five inch"
(Apologies to Fred Weismantel and Aerosmith)
Is your "girl" the fire chief?
Journalism Grade Image
Source: 2,100x2,900 pixel 16-bit TIF file.
Please do not copy this image for any purpose.