Hydrants & Pump Connections

Underground Fire Hydrant (SA Series)

Wanlian SA series underground fire hydrant is installed flush with the ground, keeping the valve body protected in the soil to resist winter freezing and vehicle impact. It provides two KWS65 outlets (65mm or a 65/80mm combination) for fire engines and hose lines, making it the standard choice for cold-climate municipal roads, industrial parks and warehouse fire protection networks.

Key Features

Flush underground installation keeps the body frost-protected and collision-resistant
Two KWS65 outlets (65/80mm options) with chain-retained caps for fast engine connection
Heavy-duty ductile iron body with full red anti-corrosive powder coating
Brass-seated lower valve for reliable shutoff and low maintenance
Anti-freeze drainage variant available for very cold regions

Technical Specifications

Nominal Inlet: DN100 / DN150
Outlet Config: 2 x 65mm (KWS65), 65 + 80mm option
Nominal Pressure: 1.6 MPa (PN16)
Installed Height: 0.71 - 0.92 m (model dependent, incl. elbow)
Body Material: Ductile Iron QT450
Application: Municipal roads, cold-climate outdoor fire networks

Parts & Materials List

Hydrant Body: Ductile Iron (QT450)
Outlets & Bonnet: Ductile Iron, red powder coated
Lower Valve: Brass Seat / EPDM Seal
Caps: Cast Iron / Zinc Alloy with safety chain

Applications

Municipal fire protection networks
Industrial and warehouse yards
Indoor standpipe systems
Cold-climate outdoor installations

Quality & Testing

Hydrostatic pressure testing (2.4 MPa typical) and flow testing per GB 4452 or applicable export standards.

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Frequently Asked Questions

How is the SA underground hydrant different from an overground (SS) hydrant?

The SA hydrant is installed mostly below grade — only the bonnet and outlet caps break through the ground surface — so the body stays protected from winter freezing and vehicle impact. The overground SS hydrant stands fully on top of grade. Choose SA for cold climates and high-traffic roads.

What outlet sizes does the SA underground hydrant offer?

Standard is two 65mm KWS outlets, with a 65 + 80mm combination available on the DN150 models, matching most international fire engine coupling threads (KWS / BS336 / NIST on request).

What is the installed height of the SA hydrant?

Installed height including the elbow ranges from about 0.71m on the SA100/65 small body up to 0.92m on the SA150 models, so it can be matched to local road camber and frost-depth requirements.

Will the SA hydrant freeze in winter?

Because the valve body sits in the ground, the SA hydrant is far more frost-resistant than overground types, and an anti-freeze drainage variant is available for very cold regions to ensure the barrel drains completely after each use.