Self-Closing Anti-Collision Fire Hydrant (SSFT100/65) — Bolt-Shear Shutdown, Pressurized Repair
Hydrants & Pump Connections

Self-Closing Anti-Collision Fire Hydrant (SSFT100/65) — Bolt-Shear Shutdown, Pressurized Repair

When a truck hits a standard fire hydrant, the street floods for days and the whole main has to go down for repairs. The SSFT100/65 is built for that exact moment.

In a collision, two calibrated safety bolts shear cleanly and the internal valve shuts the water off immediately. The hydrant stands, the outlet stays dry, and your network keeps its pressure. When it is time to repair, the crew pulls the two sheared bolts and fits two new ones. No draining the line, no digging up a flanged valve.

A built-in pressure regulating device gives progressive, smooth discharge at the outlets, and the automatic self-draining system keeps it frost-safe in winter. Ductile iron QT450 body, DN100/DN150, PN16, 2×KWS65 plus one DN100 outlet, hydrostatically tested to 2.4 MPa per GB 4452.

Key Features

  • Automatic sealing upon collision prevents severe water loss and flooding
  • Built-in pressure regulating device allows progressive and smooth water discharge
  • Equipped with automatic self-draining system to prevent freezing in winter
  • Very low maintenance cost: simply replace safety bolts and restart

Technical Specifications

Nominal Diameter
DN100 / DN150
Nominal Pressure
1.6 MPa
Inlet Connection
Flanged
Outlets
2x 65mm (KWS65) + 1x 100mm (DN100)
Body Material
Ductile Iron QT450

Parts & Materials List

Hydrant Body
Ductile Iron QT450
Lower Valve Seat
Solid Brass Alloy / EPDM covered
Shear Bolts
Medium Carbon Steel Zinc Plated (Specialized Calibrated)
Springs
Stainless Steel 304
Caps & Interfaces
Anodized Aluminum Alloy / Brass

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.

Self-Closing Anti-Collision Fire Hydrant (SSFT100/65) — Bolt-Shear Shutdown, Pressurized Repair — how it works

Frequently Asked Questions

How does the SSFT100 shut off water after a vehicle collision?
The specialized shear bolts are calibrated to break under impact. Once sheared, the internal valve closes automatically and seals the hydrant, stopping the water gush so repairs can be made with the pipeline still pressurized.
What does the built-in pressure-regulating device do?
It provides progressive, smooth water discharge when the outlets are opened, reducing flow surges and water hammer while fire engines fill from the hydrant.
What outlet standards does the SSFT100 use?
Two DN65 outlets with KWS65 interfaces plus one DN100 outlet (DN100/65 configuration, DN100 and DN150 body sizes at 1.6 MPa); other outlet coupling standards can be specified for your market.
How much maintenance does an anti-collision hydrant need after an impact?
Very little — the shear bolts are simply replaced and the hydrant is restarted. The lower valve and the pipeline stay in service, keeping the repair cost and outage time minimal.

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