Hydrants & Pump Connections
Overground Antifreeze Fire Hydrant (SS100/65)
Ductile Iron DN100 Overground Fire Hydrant. Engineered with highly effective automatic frost-drainage mechanism, providing reliable high-pressure water supply in cold-climate outdoor municipal and warehouse firefighting pipeline networks.
Key Features
- Automatic post-closing dry-barrel drainage avoids hydrant freezing and rupture
- Cast iron/ductile iron thick-wall construction resists outdoor physical impacts
- Double brass-seated outlets with highly durable weather-proof blank caps
- Standard underground flanged base for easy connection
Technical Specifications
- Nominal Diameter
- DN100 (4")
- Working Pressure
- 1.6 MPa
- Testing Pressure
- 2.4 MPa
- Outlets Config
- 2x 65mm Outlets + 1x 100mm Outlet
- Applicable Medium
- Water, Fire foam mixture
Parts & Materials List
- Hydrant Column
- Heavy Duty Ductile Iron QT450
- Lower Valve Head
- EPDM Rubber fully encapsulated
- Drainage Device
- Stainless Steel 304 / Brass
- Operating Stem
- Stainless Steel / Medium Carbon Steel
- Blank Caps
- Cast Iron / Aluminum with 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.
Frequently Asked Questions
How does the SS100 hydrant prevent freezing in cold climates?
The SS100 uses an automatic post-closing drainage mechanism: after the operating stem is closed, the barrel above the frost line drains by gravity, so the body does not trap water that could freeze and rupture the column. It is the standard choice for outdoor municipal and yard hydrants in cold regions.
What outlets does the SS100/65 provide?
Two DN65 (2.5 inch) outlets with weather-proof blank caps plus one DN100 (4 inch) outlet. Outlet coupling standards (KWS, BS336, Storz, etc.) are specified per destination market at order time.
What is the pressure rating of the SS100 hydrant?
Working pressure 1.6 MPa with a testing pressure of 2.4 MPa, in a heavy-duty ductile iron (QT450) column that resists outdoor physical impact.
What materials are used in the SS100 internals?
The lower valve head is EPDM rubber fully encapsulated for bubble-tight shut-off, the drainage device is stainless steel 304 or brass, and the operating stem is stainless or medium carbon steel.
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Hydrants & Pump Connections