Fire Pumps for Fire Protection: UL and FM Listed Horizontal Split Case, Vertical Turbine, Vertical Inline and End Suction Fire Pump Supply
ValveAtlas supplies UL Listed and FM Approved fire pumps including horizontal split case, vertical turbine, vertical inline, end suction and diesel-driven fire pumps for sprinkler system supply, standpipe supply, deluge system supply and underground water main boost on projects in Toronto, Montreal, New York, Boston and London. Electric motor-driven and diesel engine-driven fire pumps sized from 250 to 5000 gpm at pressures from 40 to 500 psi.
This page is the technical reference for specifying engineers, EPC firms, mechanical subcontractors and utility contractors selecting fire pumps on fire protection systems governed by NFPA 20 (standard for stationary pumps for fire protection), NFPA 13, NFPA 14, BS EN 12845 Section 10 and Approved Document B.
Fire pump range at ValveAtlas
| Type | Orientation | Capacity range | Pressure range | Listings | Typical application |
|---|---|---|---|---|---|
| Horizontal split case fire pump | Horizontal, double-suction | 250 to 5000 gpm | 40 to 500 psi | UL, FM | Major fire pump room, high-rise buildings |
| Vertical turbine fire pump | Vertical shaft, multi-stage | 250 to 5000 gpm | 40 to 500 psi | UL, FM | Underground water tank, well source |
| Vertical inline fire pump | Vertical shaft, single-stage | 250 to 1500 gpm | 40 to 175 psi | UL, FM | Compact pump room, tight footprint |
| End suction fire pump | Horizontal, single-suction | 250 to 1500 gpm | 40 to 175 psi | UL, FM | Mid-rise, ordinary-hazard sprinkler supply |
| Diesel engine-driven fire pump | Any above + diesel engine | 250 to 5000 gpm | 40 to 500 psi | UL, FM | Backup where electric power reliability is inadequate |
| Jockey pump (pressure maintenance) | Vertical multistage or horizontal | 5 to 50 gpm | System pressure + 10 psi | UL | Maintains system pressure, cycles main pump off |
Where fire pumps are installed
Dedicated fire pump room. NFPA 20 Section 4.12 requires fire pumps to be installed in a dedicated, fire-rated pump room with 2-hour separation from other building uses. Pump room ventilation, drainage, and dedicated electrical service are required. Toronto Building Code, NYC BC Chapter 9, 780 CMR and BS EN 12845 Section 10 recognize NFPA 20 pump room requirements.
High-rise Zone 1/Zone 2/Zone 3 supply. High-rise buildings beyond 20 stories require zoned fire pump systems. Each zone has its own fire pump sized to deliver 100 psi residual at the highest standpipe outlet in that zone. Horizontal split case pumps are standard for Zone 1 (up to 20 stories); vertical inline and split case for Zone 2 and Zone 3 in roof-level pump rooms.
Underground water tank. Where municipal supply pressure or flow is inadequate, NFPA 20 Chapter 9 requires an onsite water tank sized for 30 to 120 minutes of fire pump flow. Vertical turbine fire pumps draw directly from underground tanks; horizontal split case pumps draw from day tanks or atmospheric reservoirs.
Fire pump discharge to multiple risers. Fire pump discharge connects to sprinkler risers, standpipe risers, and building water main via a discharge manifold. NFPA 20 requires a listed check valve and OS&Y gate valve on every discharge leg.
Jockey pump for pressure maintenance. Small (5 to 50 gpm) jockey pump maintains system pressure 10 psi above the main fire pump start setpoint. Small leaks and pressure decay trigger jockey pump cycles; only actual fire demand triggers main pump start.
Listings and code acceptance
UL 448. UL 448 covers fire pumps for fire protection service. Listed for rated flow/pressure/speed combinations with factory hydrostatic test records and performance curve certification.
FM Approvals Class 1311/1319. FM-insured property fire pumps. FM Global, RSA, Aviva, Zurich, Allianz, AXA Commercial, Chubb, AIG, Travelers and Intact surveyors accept FM certificate.
NFPA 20 compliance. All fire pumps meet NFPA 20 performance requirements: shutoff head no more than 140% of rated head, churn point at rated head, 150% capacity at 65% rated head. Factory performance curves, hydrostatic test records and pump controller acceptance tests included in submittal package.
BS EN 12845 Section 10 UK acceptance. UK projects use BS EN 12845 Section 10 fire pump requirements; LPCB certification per LPS 1131 or LPS 1239. VdS recognition on European projects.
Horizontal split case vs vertical turbine vs vertical inline vs end suction
Horizontal split case. Double-suction impeller with horizontal shaft and flanged suction and discharge. Standard for major fire pump rooms 500 gpm and larger. Long service life (20-year design), excellent suction performance, minimal maintenance. Requires large pump room footprint due to horizontal motor-pump-baseplate configuration.
Vertical turbine. Multi-stage turbine impellers on vertical shaft, discharge head at top, bowl assembly submerged in water source. Standard for underground water tank or well source. Minimal pump room footprint because pump is in the water source itself. Surface motor drives shaft through discharge head.
Vertical inline. Single-stage impeller with inline suction and discharge on same centerline. Motor stacked on top. Compact vertical footprint, fits in small pump rooms. Limited to 1500 gpm and 175 psi; beyond this, horizontal split case or vertical turbine is used.
End suction. Single-suction impeller with horizontal shaft, end-suction inlet and top discharge. Economical choice for mid-rise ordinary-hazard sprinkler supply. Smaller footprint than split case but lower capacity and pressure range.
Electric vs diesel drive
Electric motor drive. NFPA 20 Section 9.5 requires fire pump electric supply from a dedicated feeder, independent of the building normal electrical service. Listed fire pump controllers (soft-start or across-the-line) with transfer switch capability.
Diesel engine drive. NFPA 20 Chapter 11 covers diesel-driven fire pumps. Required where electric power reliability is inadequate (rural, remote, or where utility service has a history of outages). Diesel day tank sized for 8 hours of continuous run; engine cooling via heat exchanger on the discharge loop. Annual engine exercise and diesel fuel polishing required per NFPA 25 Section 8.3.
Dual-driver pumps. Some installations specify dual-driver pumps: electric and diesel on one pump unit via clutch. Rare in new construction; grandfathered on older high-hazard facilities.
Substitution matrix from Aurora, Peerless, Patterson, Armstrong, Xylem, Fairbanks Morse
Aurora 481/482 horizontal split case. Substitute UL/FM listed horizontal split case fire pump 250 to 5000 gpm.
Peerless AEF/AEFP end suction. Substitute UL/FM listed end suction fire pump 250 to 1500 gpm.
Patterson BC vertical inline. Substitute UL/FM listed vertical inline fire pump 250 to 1500 gpm.
Armstrong 4300 vertical inline / 4600 split case. Substitute UL/FM listed vertical inline or horizontal split case.
Xylem A-C (Allis-Chalmers) 8100 split case / 8200 vertical turbine. Substitute UL/FM listed split case or vertical turbine.
Fairbanks Morse 5400 split case. Substitute UL/FM listed horizontal split case.
SPP Pumps (UK) FHF Series. Substitute LPCB-listed horizontal split case for UK BS EN 12845 projects.
Fire pump controller and accessories
Listed fire pump controller. UL 218 listed fire pump controller on every electric motor-driven fire pump. Soft-start (reduced voltage) or across-the-line (full voltage start) configurations. Transfer switch option for automatic transfer between normal and emergency power. Master Control Inc, Cutler-Hammer/Eaton, ASCO, Firetrol, Hubbell and Siemens controllers available.
Diesel engine controller. UL 218 listed diesel fire pump controller for diesel engine-driven pumps. Manages engine start, cooling, charging, and alarm annunciation per NFPA 20 Chapter 11.
Pump discharge trim. Listed check valve, OS&Y gate valve, pressure gauge, relief valve and flow test header on every fire pump discharge per NFPA 20 Section 4.15-4.20.
Suction trim. OS&Y gate valve on pump suction (on city-supplied pumps; omitted on tank-supplied pumps per NFPA 20 Section 4.14). Listed pressure gauge upstream.
Regional stock and delivery for fire pumps
Toronto. Horizontal split case and vertical inline pumps 500 to 2500 gpm in stock at Toronto HQ for Ontario high-rise condo and commercial projects. Pump controllers pre-configured for Ontario Hydro 600V and 347/600V service. Toronto Fire Services and Ontario Building Code submittal packages with UL approvals.
Montreal. Next-day truck freight from Toronto. RBQ-compliant submittals with BNQ equivalent to NFPA 20. French-language pump controller documentation and Hydro-Quebec 600V service pre-configuration.
New York. 2-day truck freight from Toronto. NYC DOB and FDNY acceptance; pump room submittal per NYC BC Chapter 9 and FDNY technical memos. Con Edison 480V and 4160V pump controller configurations.
Boston. 2-day truck freight from Toronto. BWSC and 780 CMR compliance; Eversource 480V service pre-configuration. Cambridge, Somerville and Brookline project submittals.
London UK. UK partner stocks LPCB-listed fire pumps. 5 to 7 day air freight via Heathrow on UL/FM dual-listed pumps; UK National Grid 400V/415V pump controller configurations. BS EN 12845 submittal packages.
Related products for complete fire pump package
Gate valves. UV0199 OS&Y on suction and discharge of every fire pump. See Gate Valves.
Check valves. UL-listed swing check immediately downstream of fire pump. See Check Valves.
Pressure reducing valves. Automatic PRVs downstream of high-rise Zone 2/Zone 3 fire pumps. See Pressure Reducing Valves.
Steel pipe. Schedule 40 flanged pipe on fire pump suction and discharge headers. See Steel Pipes.
Grooved couplings. UV11 rigid couplings on grooved-end pump room piping. See Coupling Fittings.
Frequently asked questions
How is fire pump capacity determined? Fire pump capacity is determined by hydraulic calculation of the most-demanding fire protection system. For sprinkler systems, NFPA 13 hydraulic calculation establishes design density and area of application, producing gpm and pressure demand. For standpipe systems, NFPA 14 Section 7 establishes minimum 500 gpm at 100 psi residual pressure at the highest outlet. Combined systems add both demands. Fire pump is sized to 100% of the larger demand (or sum of simultaneous demands) at 100 psi residual.
What is the NFPA 20 churn test? Churn test is an annual no-flow test per NFPA 25 Section 8.3 where the fire pump runs against closed discharge for 10 minutes. Verifies pump starts, runs, and churn pressure matches the rated shutoff head (within 140% per NFPA 20). Does not test flow capacity; use annual flow test via the test header for full-flow verification.
Is a jockey pump required? NFPA 20 Section 4.27 recommends a jockey pump on every fire pump installation to avoid short-cycling the main pump on small system leaks. Most jurisdictions require jockey pumps. Typical jockey pump is 5 to 20 gpm at system pressure plus 10 psi.
What is the NFPA 20 annual fire pump test? NFPA 25 Section 8.3 annual flow test: run pump at 100% of rated capacity and 150% of rated capacity, verifying discharge pressure at each point matches the certified performance curve within 5%. Flow test uses the discharge test header with calibrated flow meter or pitot gauge; tested water discharges to drainage or reservoir.
Can an existing building be retrofitted with a fire pump? Yes. Fire pump retrofit is common on buildings that were previously adequate on municipal supply but now require boosted flow or pressure due to sprinkler system expansion or code changes. Retrofits require dedicated fire pump room, dedicated electrical feeder, and underground main tap modifications. ValveAtlas supports retrofit submittals with custom pump sizing and pump room layout for Toronto, Montreal, NYC, Boston and London retrofit projects.
Contact ValveAtlas for fire pump quotation
For fire pump quotations, NFPA 20 pump sizing, pump room submittal packages, substitution submittals for UL/FM listed split case, vertical turbine, vertical inline, end suction or diesel-driven fire pumps, or retrofits on Toronto, Montreal, New York, Boston or London projects, email the project specification, hydraulic calculation and drawings to burakpadr@gmail.com or use the contact form. Standard turnaround is 48 hours.