SCF125-80-200  UL/FM Horizontal Split Case Fire Pump  300–750 GPM, 500 GPM @ 75 PSI  50Hz (2980 RPM) / 60Hz (3550 RPM)  Electric or Diesel Drive

NMFIRE fire pump packages are manufactured through advanced hydraulic design, precision machining, and strict quality control processes to ensure reliable operation in critical fire protection applications.

Advanced Computational Fluid Dynamics (CFD) analysis and 3D hydraulic design are applied to optimize internal flow performance:

• Improved hydraulic efficiency
• Reduced hydraulic losses
• Lower required motor power
• Stable flow and pressure performance

Pump casing manufacturing adopts Lost Foam Casting Technology to improve surface quality and hydraulic performance. Manufacturing capabilities include:

• CNC processed metal patterns
• Automatic molding line
• Automatic sand processing production line
• Intermediate frequency melting furnace
• VOD refining furnace
• Precision wax casting technology

Critical components are processed through precision CNC machining. Quality control includes:

• Impeller machining and dimensional inspection
• Shaft machining and runout verification
• Assembly alignment verification
• Dynamic balancing test for all rotating components

Each NMFIRE fire pump package undergoes factory performance verification before delivery per NFPA 20 requirements. Testing includes:

• Shut-off (churn) pressure testing — must not exceed 140% of rated pressure
• Rated flow and rated pressure verification
• 150% rated flow verification — pressure must be ≥65% of rated pressure
• Pressure-flow curve recording (minimum 5 test points)
• Operating parameter monitoring (vibration, temperature, noise)

Our dedicated fire pump test bench enables:

• Accurate flow measurement via calibrated flow meter
• Pressure monitoring at suction and discharge
• Complete performance curve generation
• Third-party witness testing arrangement per project requirements

For seawater service, corrosion-resistant, or other special material requirements, please contact us to discuss.

The SCF125-80-200 electric drive is available with motor size matched to each duty point from 30 to 75 HP:

• ODP (Open Drip Proof) — economical enclosure for clean, dry, well-ventilated indoor pump rooms
• TEFC (Totally Enclosed Fan Cooled) — sealed enclosure for dusty, humid, hot, or outdoor-adjacent environments; the common choice for African project sites

The SCF125-80-200 offers the widest diesel engine selection in the compact SCF range — five NM4 series models rated 39–86 HP at 2950 RPM (50Hz), giving maximum flexibility to match the exact duty point and site conditions:

• NM4-90C — 39 HP, for low-pressure 50Hz duties
• NM4-90 — 51 HP, the standard 50Hz diesel selection
• NM4-90B — 61 HP, for mid-range pressure 50Hz duties
• NM4-102C — 75 HP, for higher-pressure FM-rated 50Hz duties
• NM4-105 — 86 HP, for the highest-pressure UL-rated 50Hz duties

Diesel packages include engine-driven cooling, starting batteries, and engine controller matched per NFPA 20. Note: diesel drive is available at 50Hz (2980 RPM) duty points only; 60Hz (3550 RPM) duty points are served by electric motor drive.

Fire protection projects often require technical documents for consultant approval and installation. NMFIRE provides project-specific engineering support.

Standard Documents:

• Factory Test Report — including the pump performance curve
• Pump Drawings — outline and dimensional drawings

For skid-mounted or containerized packages, or any other document requirements, please contact us to discuss.

A horizontal split case fire pump has a casing split along the shaft centerline. Lifting the upper casing half exposes the impeller, wear rings, and shaft for inspection or parts replacement — without disconnecting the suction or discharge piping. The impeller is supported between two bearings, giving smooth, stable operation across a wide flow range. The NMFIRE SCF125-80-200 applies this design to the 300–750 GPM range with UL Listing and FM Approval per NFPA 20.

UL (Underwriters Laboratories) Listing and FM (FM Approvals) certification are two independent third-party certifications verifying that a fire pump meets the applicable standards (such as UL 448 and FM 1311). Both are widely accepted by fire protection consultants, insurers, and authorities having jurisdiction in export markets. Many projects specify either one; some require both. The SCF125-80-200 carries both UL Listing and FM Approval, giving maximum flexibility for consultant approval and insurance acceptance on international projects.

The SCF125-80-200 covers rated flows of 300, 400, 450, 500, and 750 GPM, with pressure ratings from 50 to 103 PSI (head 38–70 m). At the 500 GPM duty point, 50Hz operation (2980 RPM) delivers 50–77 PSI while 60Hz operation (3550 RPM) reaches up to 90 PSI. The 750 GPM extension is available at 60Hz only. Driver options span ODP/TEFC electric motors from 30 to 75 HP and five NM4 series diesel engines from 39 to 86 HP. The full selection table and performance curves for each flow/pressure/speed combination are available on request.

Sizing starts from the hydraulic calculations of the sprinkler or standpipe system: the required flow (GPM) at the most demanding point plus hose stream allowance, and the pressure needed to overcome elevation, friction losses, and required residual pressure, minus available municipal supply pressure. The selected pump must then meet the NFPA 20 performance criteria: at 150% of rated flow, discharge pressure must be ≥65% of rated pressure; at shut-off, pressure must not exceed 140% of rated. NMFIRE engineering can verify your duty point against the SCF125-80-200 selection table and issue a project-specific performance curve for consultant approval.

Horizontal split case pumps are the most common fire pump type: easy to service in place, and suitable for medium to high flow duties (the SCF125-80-200 covers 300–750 GPM with pressure up to 103 PSI). End suction pumps offer a simple, economical layout for lower duties. Vertical inline pumps have the most compact footprint for space-limited plant rooms and retrofits. All three types are available from NMFIRE with UL Listed and FM Approved certification per NFPA 20. Selection depends on project flow, available space, and maintenance strategy.

The SCF125-80-200 has the widest diesel engine selection in the compact SCF range because its duty points span a broad pressure band (50–103 PSI) at five flow rates, each requiring a different shaft power. Rather than oversizing a single engine for all duties — which wastes fuel and cost — NMFIRE matches the engine to the exact duty point: NM4-90C (39 HP) for low-pressure duties, NM4-90 (51 HP) for standard duties, NM4-90B (61 HP) for mid-range, NM4-102C (75 HP) for higher-pressure FM-rated points, and NM4-105 (86 HP) for the highest-pressure UL-rated points. This also gives margin to absorb altitude and temperature derating — if the standard engine derates below the required power at site conditions, the next model up is available without changing the pump.

Yes. The SCF125-80-200 extends to 750 GPM at 60Hz (3550 RPM), with pressure from 66 to 103 PSI and shaft power up to 70 HP. This makes it suitable for large-area warehouse and logistics sprinkler systems that exceed the 500 GPM rating without needing a larger pump model. At 50Hz (2980 RPM), the maximum rated flow is 500 GPM. For projects requiring 750 GPM at 50Hz, NMFIRE offers larger SCF series models. The 750 GPM duty point is electric-drive only (no diesel option at 60Hz).

A 500 GPM fire pump at 50–90 PSI is a standard duty for ordinary-hazard occupancies: warehouses and logistics centers (a frequent requirement in Tanzania and across Africa), shopping complexes, apartment blocks, schools, and light manufacturing plants. The low-head characteristic of the SCF125-80-200 matches projects where the sprinkler demand is moderate rather than high-pressure standpipe. For higher flow duties, the 750 GPM extension at 60Hz covers larger floor areas from the same pump model.

The SCF125-80-200 pump unit itself comprises the horizontal split case pump and its electric motor or diesel engine. For projects requiring a complete fire pump system, NMFIRE can configure packages that add a UL/FM listed fire pump controller, a jockey pump for pressure maintenance, and a pressure relief valve where required. Delivery options include conventional plant room installation, a skid-mounted fire pump system with pre-piped pump and jockey pump on a common base, and a fully containerized fire pump station pre-assembled for plug-and-play site connection. Package scope is configured per NFPA 20 and project requirements.

Yes. NMFIRE fire pump packages are designed according to NFPA 20 requirements. The SCF125-80-200 horizontal split case model is UL Listed and FM Approved. Each pump is factory performance tested per NFPA 20 including shut-off pressure verification (max 140% of rated), rated flow testing, and 150% rated flow verification at no less than 65% of rated pressure.

Yes. Factory test reports including pump performance curves, together with pump outline and dimensional drawings, are provided as standard technical documents. For skid-mounted or containerized packages, or any other document requirements, please contact us to discuss. Third-party witness testing at our fire pump test facility can also be arranged per project requirements.