Fire Hydrant Types & Installation Standards: Differences Between Indoor and Outdoor Selection

I. First, Clarify: Core Functional Differences Between Indoor and Outdoor Fire Hydrants

• Indoor Fire Hydrants：Focusing on the initial fire suppression within the building, it needs to be used in conjunction with fire hoses and water guns to quickly respond to fire situations in enclosed spaces such as floors, machine rooms, and warehouses, emphasizing convenience and adaptability.
• Outdoor Fire Hydrants：It is designed to handle large-scale fires on the exterior of buildings, providing water supply for fire engines or directly connecting hose lines for firefighting. It must be able to withstand harsh weather conditions, emphasizing high pressure, large flow rate and easy identification.

II. Mainstream Types and Selection Key Points of Indoor and Outdoor Fire Hydrants

(I) Indoor Fire Hydrants: Classification by Installation Form and Selection Suggestions

(II) Outdoor Fire Hydrants: Classification by Installation Position and Selection Suggestions

III. Core Points of Indoor and Outdoor Fire Hydrant Installation Standards (Must Read!)

(I) Indoor Fire Hydrant Installation Standards

• Position Requirement: Install near evacuation routes and stairwells for quick access; 1.1m above the ground, with the water outlet facing the wall or at a 45° angle to the wall, without obstruction.
• Pressure and Flow: High-rise buildings must install pressure-reducing and stabilizing types to ensure the water pressure at the most unfavorable point is ≥0.07MPa and the flow rate is ≥5L/s.
• Supporting Requirements: Must be installed as a complete set with fire cabinets, hoses (length ≤25m), and water guns; the fire cabinet door must have a "Fire Hydrant" label, and the opening angle ≥120°.

(II) Outdoor Fire Hydrant Installation Standards

• Spacing Requirement: Spacing ≤120m on urban roads, ≤150m in industrial areas and parks to ensure full coverage without dead ends during fires.
• Burial Depth and Protection: Underground type burial depth ≥0.6m (below the frost layer), above-ground type must be equipped with anti-collision guardrails; the interface must be equipped with a dust cap to prevent debris from entering.
• Water Pressure Requirement: Working pressure ≥0.6MPa to meet the water absorption pressure requirements of fire trucks; the water outlet must be compatible with standard fire interfaces (DN100/DN150).

IV. Common Mistakes in Selection and Installation, Avoid These Pitfalls!

Mistake 1: Mixing indoor and outdoor fire hydrants—outdoor fire hydrants are not corrosion-resistant and prone to rust when used indoors; indoor fire hydrants have insufficient pressure to meet the needs of large-area outdoor fire extinguishing.

Mistake 2: Concealed installation position—indoor fire hydrants blocked by debris, outdoor fire hydrants covered by greenery, delaying fire extinguishing.

Mistake 3: Ignoring anti-freezing measures—outdoor fire hydrants in northern regions not insulated, prone to freezing and cracking in winter, resulting in unusability.

V. Why Choose Our Fire Hydrants?

As a fire hydrant manufacturer with 20 years of experience, our products combine quality and adaptability:

The entire series has passed 3C certification and ISO9001 quality system certification, with complete indoor and outdoor models, supporting customized production (such as special pressure, interface, and material requirements).

Core components are made of brass and ductile iron, corrosion-resistant and anti-aging; outdoor models are added with anti-freezing and anti-collision designs, adapting to different climates and environments.

Provide one-stop service: from selection consultation, technical scheme design to installation guidance and after-sales maintenance, the professional team follows up the whole process to ensure the equipment meets fire safety standards.

VI. Consult Now to Get Exclusive Fire Hydrant Solutions!