Shibaura FK500-A / FK450-A Water-Cooled Fire Pump
Shibaura FK500-A / FK450-A Water-Cooled Fire Pumps
Designed for durability in dirty water environments, the FK500-A and FK450-A feature Shibaura’s proprietary Fully Water-Cooled Radiator system for reliable thermal control. Both models offer high discharge performance, rapid priming, and a compact design ideal for demanding operational conditions where cooling integrity and service life are critical.
Model Line-Up:
FK500 / FK500-A / FK450-A
Dry Weight: 85 kg
Starting System: Electric & Manual Starter
Discharge Performance (FK500-A):
- 0.5 MPa @ 1 m suction: 1,595 L/min
- 0.5 MPa @ 3 m suction: 1,580 L/min
- 1.0 MPa @ 1 m suction: 1,020 L/min
- 1.0 MPa @ 3 m suction: 975 L/min
Priming Performance: Approx. 2.2 seconds @ 1 m suction height
Key Features
1. AUTOMATIC CHOKE SYSTEM FOR CARBURETOR
Temperature sensors adjust the choke valve automatically. A powerful bimetal coil ensures fast heating and immediate full-throttle readiness. Diaphragm rod design prevents contamination-related failures. Built-in heaters support long-term maintenance.
2. ADVANCED FUEL FEEDING SYSTEM
The separate oil injection system maintains optimal mixing ratios without manual blending. Low oil triggers a visual alert and automatic engine shutdown via the OK monitor system.
3. SHIBAURA’S UNIQUE WATER SHUT-OFF VALVE
The 5-valve integrated body provides smooth vacuum-assisted shutoff with one-button drainage. Enables rapid deployment and simplifies user handling.
4. AIR-COOLED ENGINE OPTION (Other Models)
While this pump is water-cooled, Shibaura offers the widest air-cooled pump selection in Japan for applications requiring alternate cooling systems.
5. WATER-COOLED ENGINE SYSTEM
Shibaura’s Fully Water-Cooled Radiator system supports engine idle warm-up without coolant discharge. It prevents clogging, thermal imbalance, and mechanical wear in dirty or debris-laden water environments.
6. VACUUM PUMP
4-vane rotary system enables fast suction activation with low wear components, ideal for high-urgency fire operations.
7. QUICK VALVE
45° lever mechanism allows fast and intuitive valve control in the field.

8. OILLESS VACUUM PUMP
No oily discharge. High-strength carbon vanes support clean, safe, and environmentally conscious operation.
9. AUTO COOLANT CIRCULATION SYSTEM (NICE VALVE)
Coolant is recirculated internally without ground discharge. Prevents muddy or icy buildup around the unit and protects operator footing in challenging terrain.
Specifications
| Item | FK500-A | FK450-A |
|---|---|---|
| Dimensions (L×W×H) | 701 × 652 × 709 mm | |
| Dry Weight | 85 kg | |
| Pump Model | Shibaura B716 | |
| Type | High-pressure, single-stage centrifugal | |
| Discharge @ 0.5 MPa / 1 m | 1,595 L/min | 1,560 L/min |
| Discharge @ 0.5 MPa / 3 m | ||