Underground Fire Hydrant
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Underground Fire Hydrant

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Product Introduction

The Municipal-Grade Underground Fire Hydrant is a premium water-supply terminal designed for integration into urban water distribution networks. Engineered to be installed entirely below ground level, it is accessed through a dedicated surface cover box. This design is optimized for modern urban planning where preserving sidewalk space and city aesthetics is essential. By utilizing advanced metallurgy and coating technologies, this hydrant offers unparalleled protection against the harsh conditions of subterranean environments, including soil acidity and moisture infiltration.

Product Parameter

Feature	Technical Specification
Nominal Diameter	DN100 / DN150 (4" or 6")
Nominal Pressure	PN16 / PN25 (1.6 MPa / 2.5 MPa)
Inlet Connection	Flanged (EN1092-2 / ANSI) or Mechanical Joint
Outlet Interface	65mm (Single/Double) or 100mm (Threaded/Storz/BS336)
Main Material	Ductile Iron GGG50 / ASTM A536 65-45-12
Coating	Fusion Bonded Epoxy (FBE) ≥ 250μm
Compliance	BS 750, EN 14339, AWWA C502, GB 4452

Product Feature and Application

Space Optimization:

Eliminates street-level obstructions, making it ideal for narrow pedestrian walkways and historic districts.

Freeze-Resistant:

The valve seat is located below the frost line, and an automatic drain system clears the barrel after use to prevent ice expansion.

Anti-Vandalism:

The hidden underground design prevents unauthorized water usage and minimizes the risk of accidental vehicle collision damage.

Applications:

Specifically designed for municipal infrastructure, high-density residential zones, airport tarmacs, and industrial park perimeters.

Product Details

Valve Body: High-strength Ductile Iron construction ensures high pressure ratings and impact resistance.
Sealing System: The wedge is fully encapsulated in EPDM rubber, providing a resilient, bubble-tight seal that is resistant to aging and chemicals.
Stem Assembly: High-grade Stainless Steel (2Cr13 or SS304) operating stem prevents rust-seizing and ensures low-torque operation.
Drainage Mechanism: A bronze automatic drain valve ensures the hydrant remains dry when not in use, extending the service life of internal components.

Product Display

Isometric View:

Highlighting the fusion-bonded epoxy finish.

Sectional View:

Showing the internal stem, wedge, and automatic drain valve arrangement.

Installation Layout:

Demonstrating the hydrant positioned within the cast iron protective surface box.

Transport Package

Protection: Each unit is wrapped in heavy-duty PE stretch film to safeguard the epoxy coating.
Crating: Shipped in export-standard reinforced wooden crates or heat-treated (ISPM 15) pallets.
Organization: Multiple units are secured with steel strapping and corner protectors to prevent movement and friction during maritime or overland transit.