Overview
The OGF 250x350 firewater pump by Jason Engineering AS is designed for firefighting and firewater duties. It features an ultra-compact and lightweight design, capable of both clockwise (CW) and counterclockwise (CCW) rotation. The pump allows for easy dismounting of the impeller from the suction side and can accommodate suction bends in any configuration.

Design Specifications
- Type: Single stage, single suction centrifugal pump
- Mounting: Horizontal with end suction or side bottom suction bends
- Shaft Seal: Soft gland packing or mechanical seal
- Bearings: Grease lubricated ball bearings
- Materials: Casing in Ni-Al-Bronze or Nodular Cast Iron, Impeller in Ni-Al-Bronze, Shaft in stainless steel
- Coating: Carboline epoxy
- Weight: 450 kg

Performance Data
- Capacity: 600 – 1700 m³/h
- Fluid: Sea water
- Total Head: 100 – 150 mlc
- Density: 1025 kg/m³
- Speed: 1500-1900 rpm
- Viscosity: 1 cSt
- Power Consumption: Up to 850 kW
- Temperature: 35°C
- Driver Rating: Up to 910 kW
- NPSH Required: 2-8 meters
- NPSH Available: 3-9 meters

Approvals and Testing
The OGF 250x350 is designed to meet FiFi I class requirements for offshore vessels and requires class approval. It undergoes performance testing in accordance with ISO 2548 engineering grade 2 and is hydrostatically pressure tested to a maximum of 27 bar, which is 1.5 times the pump delivery pressure against a closed discharge valve.