Wet Barrel Fire Hydrant Assembly
Wet Barrel Fire Hydrant consisting of a visible barrel, NH thread adapter, and cap & chains, it connects to an underground water main and remains fully exposed to the elements, allowing rapid hookup of hoses without entering buildings or confined spaces.
Fujian Haijing Fire Fighting Equipment Co., Ltd. is one of the leading manufacturers and suppliers of wet barrel fire hydrant assembly in China, also supports customized service. Please feel free to wholesale cheap wet barrel fire hydrant assembly from our factory.
Products Description of Wet Barrel Fire Hydrant Assembly
Material:
Body: Ductile Cast Iron
Outlets: Brass+Ductile Cast Iron
Inlet: 100mm (4") Flange, BS Standard
Outlets: NH thread with cap and chains
Working Pressure: 1.6MPa/16Bar/232psi
Height: 800mm
Surface: Red painted
Weight: 32±1KG
How does the pressure in a Wet Barrel Fire Hydrant affect water flow?
1. Static Pressure (no flow)
This is the "standing" pressure measured when the hydrant is closed. Typical municipal static pressures range from 7 bar (100 psi) to 16 bar (230 psi). Higher static pressure means more potential energy is available.
2. Residual Pressure (during flow)
When hoses are opened, pressure drops to the residual level. The difference between static and residual pressures indicates how much flow the system can sustain before pressure becomes too low for effective firefighting.
3. Flow Rate vs. Pressure Relationship
Higher pressure → higher flow rate for a given hose/nozzle combination (per Bernoulli's principle).
Lower pressure → reduced range and volume, potentially requiring booster pumps or additional hydrants.
4. Practical Impact
Minimum 3.5 bar (50 psi) residual pressure is generally required for effective fog or jet streams.
Below 1.4 bar (20 psi) residual pressure can collapse hose lines and render streams ineffective.
Pressure too high (>20 bar) may damage lightweight hoses or require pressure-reducing valves.
Company Information
FAQ
Q: How is an Wet Barrel Fire Hydrant Assembly connected to the water main?
A: It is connected via an underground lateral pipe with a gate or check valve at the main, ensuring one-direction flow and isolation for maintenance.
Q: How far can an Wet Barrel Fire Hydrant Assembly supply water horizontally?
A: With standard 65 mm hoses and 350 gpm flow, effective reach is roughly 90–120 m; relay pumping extends this significantly.
Contact us
Send us your enquiry, we will reply In 24 Hours!
WhatsApp/WeChat: +86-18359194029
E-mail: sales03@sanjingfire.com
Add: Maosheng RD., Fumao Economic Zone, Nan'an City, Fujian, China, 362300
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