Fire Hydrant Manufacturer

Fire hydrant is an outdoor water outlet connected to a water supply system. Firefighters use it to get water quickly when they need it. It’s a good source of water for fighting fires. You see them along the street, in industrial areas, and near buildings.

Judberd is fire hydrant manufacturer in china, We can offer above ground fire hydrant and underground fire hydrant.

Above Ground Dry Barrel Fire Hydrant

Feature

UL/FM approved

CE approved

According to AWWA C502 and EN 14384

With 3 outlets

Rate pressure is 250 PSI

Outlet connection is according to NFPA1963

Surface coating thickness is more than 250um and less than 500um ,color:RAL3020

Customized is available upon request

PRESSURE TEST

Play Video about fire hydrant pressure test

Play Video about fire hydrant pressure inspection

WORKING PRINCIPLE

Connected to Water Pipes Underground The fire hydrant is connected to the water pipes that run under the streets in the city or the factory. The water stays in the pipe underground until someone opens the hydrant.

Closed When Not in Use When the hydrant is not being used, it is closed. No water comes out of the hydrant unless you open it with a special tool.

Firefighters Open the Hydrant with a Wrench Firefighters use a special wrench to turn the top valve on the hydrant. This opens the water flow inside.

Water Flows Out Through Outlets The hydrant has 1 to 3 outlets (water openings). Hoses are connected to these outlets to spray water onto the fire.

Controlled Water Pressure Hydrants are built to handle high water pressure, so the water can go a long way through the hoses.

After Use – Close the Valve After the fire is out, you close the valve. Some hydrants also drain the extra water out of the hydrant so it won’t freeze.

FIRE HYDRANTS TYPES

Fire hydrants are classified by how they are installed and how they work. Knowing the different types helps you choose the right hydrant for your area.

By How They Are Installed

Above-Ground Fire Hydrant You can see it above the ground, Easy to find and use, Common in cities and warm places, Usually has 2–3 places to connect hoses

Underground Fire Hydrant It is below the ground, Covered by a lid or cap, so you can’t see it, Used where there is not much room or to look nice, Good for cold places or where you need to keep the water from freezing

By How They Work
Dry Barrel Fire Hydrant Used in cold places to keep the water from freezing, The water stays below the ground until you open the valve, The barrel stays dry when you are not using it, After you use it, the hydrant drains itself

Wet Barrel Fire Hydrant Used in warm or tropical places, There is always water inside the hydrant body, Each place where you connect a hose has its own valve, It is easier to keep up and you can use it faster in an emergency

Type	Installation	Climate	Water Inside	Main Advantage
Above-Ground Hydrant	Above ground	Any	Dry or wet	Easy access and maintenance
Underground Hydrant	Underground	Cold or urban	Usually dry	Anti-freeze, space-saving
Dry Barrel Hydrant	Both	Cold	No	Freeze protection
Wet Barrel Hydrant	Above ground	Warm	Yes	Immediate water access

HOW to CHOOSE FIRE HYDRANTS?

Dry or Wet Barrel
There are two types of fire hydrants: dry barrel and wet barrel. The main difference is whether water is stored in the barrel or not. The main valve is located below ground to prevent freezing in a dry barrel. In a wet barrel, water is always present in the barrel. There is no internal valve, and the hydrant is easy to operate.
In freezing areas, wet barrels can be damaged by ice—use dry barrels instead.
Above-ground or Underground
There are two types of fire hydrants based on installation location: above-ground and underground. Above-ground hydrants have the hydrant body visible and exposed above ground. They are typically found in urban streets, parks, and factory zones. Underground hydrants are hidden below ground with an access cover. They are typically found in plazas, sidewalks, airports, and cold areas.
Use underground hydrants where space is tight or aesthetics matter. Use above-ground hydrants for quick access and easier maintenance.
Pressure Rating (PN Rating)
There are two pressure ratings (PN ratings) for fire hydrants: PN10 and PN16. PN10 has a maximum operating pressure of 10 bar (145 psi). PN16 has a maximum operating pressure of 16 bar (232 psi).
Check your local water network pressure before selecting the hydrant’s PN rating.
Connection Size and Type
There are two things to consider when selecting a fire hydrant based on connection size and type.
Connection Size (Outlet Nozzle)
The outlet nozzle size is the size of the connection where the water comes out. Common sizes are DN80 or DN100. Make sure the outlet nozzle size matches your fire hose or pipe fitting.
Connection Type
There are two types of connections: flanged and quick coupling. Flanged connections are a secure and leak-proof connection with bolts. They are best for permanent installations. Quick coupling connections are easy to install or remove quickly. They are best for temporary or emergency setups.
Always confirm compatibility with your existing pipeline or fire equipment.

Example Selection Scenarios
Here are some example scenarios to help you choose the right fire hydrant for your environment.

Environment	Recommended Hydrant Configuration
Cold residential area	Dry barrel + Above-ground + PN10 + DN100 + Flanged
Tropical city plaza	Wet barrel + Underground + PN16 + DN100 + Quick coupling
Industrial port	Dry barrel + Above-ground + PN16 + DN100 + Flanged
Modern commercial zone	Wet barrel + Above-ground + PN16 + DN100 + Flanged

Final Checklist Before You Order:

Confirm the climate conditions
Determine above-ground or underground installation
Match the pressure rating to your local system
Choose the correct outlet size and connection method
Ensure certifications (UL, FM, EN14384, etc.) if required

INSTALLATION

Fire hydrants are critical for emergency water supply. Proper installation and regular maintenance ensure they work when needed.

Select a Suitable Location Place near the main water supply pipeline, Avoid areas too close to buildings, cables, or drainage systems, Make sure the ground is flat and easy to access

Prepare the Installation Pit Dig a hole deep enough to accommodate the hydrant base, For underground hydrants, add drainage material (e.g. gravel) at the bottom, A concrete foundation is recommended for stability
Connect to the Water Line Attach the hydrant to the pipeline using flanges, bolts, or quick couplings, Clean inside the pipe to remove debris before connecting, Use proper gaskets and tighten all bolts
Check Drainage (For Dry Barrel or Underground Types) Ensure drainage ports or gravel drainage beds are functional, Drainage prevents water from staying inside the hydrant and freezing
Level and Align the Hydrant Use a level tool to keep the hydrant vertical, Position the operating nut facing the street for easy firefighter access
Perform Pressure Testing Turn on the water and check for leaks, Confirm stable pressure and secure installation
Backfill and Compact Refill the hole layer by layer using soil or gravel, Compact each layer and restore the surface neatly

MAINTENANCE

Routine Maintenance Tasks

Frequency	Task	Details
Monthly	Check visibility	Remove weeds, garbage, or blockages around the hydrant
Quarterly	Operate the valve	Open and close to ensure it moves smoothly
Bi-annually	Check for leaks	Inspect base and outlets for water drips or seepage
Yearly	Full inspection	Test drainage, check tightness, repaint if needed
Every 3-5 yrs	Repaint or replace parts	Prevent corrosion, extend hydrant life

Important Tips

Use proper tools—never hit the hydrant with a hammer
For dry hydrants, always check the drain during winter
Ensure that hydrant markings and numbers are clearly visible
Common FAQs
Q: Do all hydrants need drainage?
A: Yes, especially dry barrel and underground types. Without drainage, water may freeze inside and damage the hydrant.
Q: What should I do if the hydrant leaks?
A: Check gaskets, bolts, or internal valve parts. Replace any worn components.
Q: Can I install a fire hydrant myself?
A: It’s strongly recommended to have it installed by a licensed contractor or plumbing team to meet safety and legal standards.

DESIGN STANDARDS and CERTIFICATIONS

To ensure safety, compatibility, and performance, fire hydrants must follow specific international or national standards and obtain relevant certifications. These requirements may vary by region and application (municipal, industrial, etc.).

Common Design Standards

Standard	Description	Region
AWWA C502 / C503	Design standard for dry-barrel (C502) and wet-barrel (C503) hydrants	USA, North America
EN 14384	Specification for underground hydrants	Europe
EN 14339	Specification for pillar (above-ground) hydrants	Europe
BS 750	British Standard for pillar fire hydrants	UK, former Commonwealth countries
NFPA 291	Guidelines for hydrant flow testing and marking	USA (fire departments)
ISO 6182-12	International standard for wet fire hydrant systems	International

Hydrant design typically includes requirements for pressure class (e.g. PN10, PN16), corrosion resistance, flow rate, and maintenance access.

Key Certifications Required

Certification	Description	Purpose
UL (Underwriters Laboratories)	U.S.-based safety certification	Ensures hydrant meets performance and safety criteria
FM (Factory Mutual)	Global risk management certification	Recognized by insurers for fire protection products
WRAS (Water Regulations Advisory Scheme)	UK standard	Confirms materials are safe for drinking water (potable use)
CE Mark (per EU Directive)	Required for hydrants sold in the EU	Declares conformity with European safety and performance standards
ISO 9001 / 14001	Quality and environmental management system	Required by many large buyers for consistent quality and sustainability

Additional Considerations

Corrosion protection: Internal and external coatings (e.g. fusion bonded epoxy, hot-dip galvanizing) must meet specific standards (such as ISO 12944 or AWWA C550).

Thread compatibility: Outlet nozzles must match local fire hose thread standards (e.g. NST/NH in the U.S., BSP in Europe).

Tamper resistance: Some regions require vandal-proof designs or locking mechanisms.

Color coding: In places like the U.S., hydrants must be painted according to NFPA 291 to indicate flow capacity.

FIRE HYDRANT COLOR

NFPA 291 Color Coding for Fire Hydrant Flow Capacity

Color (Top/Bonnet)	Flow Rate (GPM)	Meaning
Light Blue	1500 GPM or more	Excellent – Very high flow, best for major fires
Green	1000 – 1499 GPM	Good – Adequate for most residential areas
Orange	500 – 999 GPM	Fair – Limited flow, may not be sufficient for large fires
Red	Below 500 GPM	Poor – Minimal flow, may only be suitable for flushing or small-scale use