RF39.400N | Industrial Triplex Pump, 10.3 GPM 5800 PSI

RF39.400N Industrial Triplex Plunger Pump — 10.3 GPM @ 1450 RPM | 12.4 GPM @ 1750 RPM | 5800 PSI

The AR RF39.400N is the highest-flow model in Annovi Reverberi’s Series
538 RF industrial triplex plunger pump lineup — engineered for demanding washing systems,
heavy-duty process cleaning, fleet maintenance, and large-scale industrial applications
that require sustained high-flow, high-pressure output across continuous operational
shifts. The RF39.400N is dual-rated, delivering 10.3 GPM at
1450 RPM or 12.4 GPM at 1750 RPM, both at a maximum of
5800 PSI (400 Bar) — giving system designers and OEM builders the
flexibility to optimize pump output by selecting drive speed, without changing the pump.

Built on a 30 mm solid N-version shaft, a precision brass manifold,
full ceramic plungers, and bronze connecting rods, the RF39.400N
delivers the volumetric output, pressure consistency, and mechanical endurance that
industrial contractors, fleet operations, process facilities, and environmental service
providers depend on. At 48.5 lbs and a compact industrial footprint, it integrates
cleanly into skid systems, trailer-mounted rigs, belt-drive configurations, and
fixed-plant installations across a wide range of heavy-duty applications.

RF39.400N Dual-Speed Performance Specifications

• Max Flow @ 1450 RPM: 10.3 GPM (39 L/min) — standard operating
  speed for belt-drive diesel, electric motor, and gearbox-driven configurations
• Max Flow @ 1750 RPM: 12.4 GPM (47 L/min) — increased output
  when driven by higher-speed electric motors or upgraded drive systems; approximately
  20% more throughput from the same pump
• Max Pressure: 5800 PSI (400 Bar) — consistent at both 1450 and
  1750 RPM; pressure rating does not change with shaft speed
• Dual RPM Rating: 1450 RPM (standard) | 1750 RPM (re-rated) —
  manufacturer-approved operating range; dual rating will appear in official AR
  literature in 2027
• Power @ 1450 RPM: 41.0 EBHP at full rated output
• Pump Type: Triplex plunger — three-cylinder balanced design
  for smooth, low-pulsation output and consistent volumetric efficiency
• Shaft: 30 mm solid, N (Natural) version — direct coupling or
  belt-drive sheave ready
• Bore Diameter: 22 mm | Stroke: 25 mm
• Crankshaft ID Stamp: 4
• Inlet: 1″ F (FNPT) | Outlet: 1/2″ F (FNPT)
• Head Material: Brass — precision-machined for sustained
  pressure integrity and chemical compatibility
• Connecting Rods: Bronze — low-friction alloy for smooth,
  durable power transfer at both rated speeds
• O-Ring Material: Buna-N — suited for water and standard
  industrial cleaning fluid service
• Max Fluid Temperature: 140°F
• Oil Capacity: 50 oz
• Dimensions: 13.12 × 8.73 × 6.65 in |
  Weight: 48.5 lbs
• Series: 538 (RF) | Industrial | CSID Stamp: 4
• Orientation: Horizontal

RF39.400N Dual-RPM Rating — System Design Guidance

• One pump, two operating points: The RF39.400N is
  manufacturer-approved for operation at both 1450 RPM and 1750 RPM — allowing
  OEM builders and system designers to spec a single pump for two different drive
  configurations or upgrade output without hardware changes
• Flow increases proportionally with shaft speed; pressure is constant:
  At 1450 RPM the RF39.400N delivers 10.3 GPM. At 1750 RPM, output rises to
  approximately 12.4 GPM. The 5800 PSI maximum pressure rating applies at both speeds
• 1450 RPM operation: Optimized for belt-drive diesel engines,
  standard-speed electric motors, and systems where lower noise, longer seal life,
  and reduced heat generation are priorities alongside high flow
• 1750 RPM operation: Suited for higher-speed electric motor
  drives where maximum throughput is required — delivering approximately 20% more
  flow from the same RF39.400N pump investment
• Drive sizing at 1750 RPM: Ensure your drive motor, coupling,
  belt, and sheave components are rated for the increased torque and power demand
  at the higher speed — verify EBHP requirement against your drive selection before
  commissioning
• Plumbing and system components should be rated for 5800 PSI
  at the higher flow rate when operating at 1750 RPM — verify hose, valve,
  unloader, and fitting pressure and flow ratings before upgrading drive speed on
  an existing system
• Note: The 1750 RPM dual rating is manufacturer-approved by
  Annovi Reverberi and will appear in official AR product literature beginning 2027

RF39.400N Triplex Plunger & Wet-End Construction

• Full ceramic plungers — 22 mm bore, 25 mm stroke — provide
  exceptional hardness, dimensional stability, and corrosion resistance for
  repetitive high-pressure cycling at both 1450 and 1750 RPM in continuous
  industrial service
• Precision brass manifold maintains sealing tolerances under
  sustained 5800 PSI pressure, thermal cycling, and continuous-duty operation —
  minimizing risk of distortion or internal leakage at full rated output
• Inlet and discharge valves with optimized porting support
  efficient filling and discharge across the full dual-speed operating range,
  maintaining volumetric efficiency at both 1450 and 1750 RPM
• Double gasket sealing system provides redundant pressure
  containment at the plunger-manifold interface — a critical reliability feature
  at sustained 5800 PSI operating pressures
• Valve caps on suction and delivery sides allow direct
  access to valve assemblies for inspection and replacement without removing
  the RF39.400N from the system — significantly reducing service time and downtime
• Bronze connecting rods deliver smooth, durable power
  transfer from the 30 mm crankshaft to the ceramic plungers at both rated
  speeds, minimizing parasitic wear at the rod-bearing interface

RF39.400N Crankcase, Shaft & Lubrication System

• 30 mm solid N-version crankshaft — high-strength pressed
  steel construction providing the torsional rigidity and dynamic balance required
  for sustained operation at up to 1750 RPM under full 5800 PSI working load
• Die-cast aluminum-alloy crankcase and side covers deliver
  structural stiffness, efficient heat dissipation, and vibration damping —
  essential when the RF39.400N is mounted on steel skids, plant frames, trailer
  rigs, or mobile industrial platforms
• Oversized main bearings support radial and axial loads
  generated by belt tension and high working pressure — maintaining shaft alignment
  and bearing life across long service intervals at both rated operating speeds
• Oil-bath crankcase lubrication with 50 oz capacity keeps
  journals and bearings continuously supplied through extended high-load
  operation at 1450 and 1750 RPM
• Side cover oil level indicator option and rear cover oil
  drain simplify routine checks and scheduled changes without removing the
  RF39.400N from service
• Initial oil change at 50 operating hours, then per
  duty-cycle schedule using SAE 30 non-detergent or AR-approved pump oil

RF39.400N System Integration & Drive Compatibility

• Belt-drive compatible: 30 mm solid shaft supports robust
  sheave and belt hardware rated for the torque demands at both 1450 and 1750 RPM
  — the most common drive configuration for diesel engine and multi-speed
  industrial installations
• Electric motor direct-drive and gearbox compatible: Couples
  to standard electric motors via flexible elastic couplings or gearboxes for
  fixed industrial plant installations at either rated speed
• Hydraulic motor drive: Supports hydraulic motor integration
  for mobile equipment and remote-mounted systems where electric power
  is unavailable
• Compact 13.12 × 8.73 × 6.65 in footprint at 48.5 lbs
  simplifies mounting on skids, carts, mezzanine platforms, and enclosed system
  cabinets — plan service access clearance and adequate ventilation at
  the mounting location
• Multi-pump configurations: The RF39.400N can operate as
  a single high-capacity unit or within a parallel pump arrangement for system
  redundancy, staged operation, or flow multiplication across large
  industrial facilities
• Full AR accessory compatibility: Pairs with AR unloaders,
  pressure regulators, safety relief valves, and bypass systems for complete,
  code-compliant high-pressure system integration

RF39.400N Plumbing, Filtration & System Protection

• 1″ F inlet must be fed from a generously sized,
  low-restriction supply line — adequate inlet flow and pressure are essential
  to prevent cavitation, especially at 1750 RPM where volumetric demand
  increases to 12.4 GPM
• Inlet filtration required: Install a minimum 20-mesh
  strainer upstream to protect ceramic plungers and brass valves from
  abrasive particle damage at both rated speeds
• 1/2″ F discharge must connect to hose, tubing, and
  fittings rated for 5800 PSI working pressure with appropriate safety factors
  for the system design and applicable codes
• Unloader or pressure regulator required: System design
  must include a properly matched unloader, safety relief device, and bypass-to-tank
  arrangement to protect the RF39.400N during low-flow or bypass conditions
  at either operating speed
• Bypass cooling strategy: For systems with frequent or
  extended bypass operation at 1750 RPM, size bypass lines, tank volume, and
  cooling capacity for the higher flow rate to prevent thermal buildup
  in recirculating fluid

RF39.400N Maintenance & Serviceability

• Valve cap access points on both suction and delivery
  sides provide direct valve inspection, cleaning, and replacement access without
  removing the RF39.400N from the system or full pump disassembly
• Routine service checklist: Verify oil level via side-cover
  indicator, inspect inlet filter condition, monitor discharge pressure trends,
  and check drive belt condition and alignment at regular intervals
• Pressure trend monitoring: Declining discharge pressure at
  consistent RPM is an early indicator of valve wear, seal degradation, or inlet
  restriction — address promptly to prevent pump damage and unplanned downtime
• Drive component inspection at 1750 RPM: Belt tension,
  sheave alignment, coupling fasteners, and mounting hardware experience higher
  dynamic loads at 1750 RPM than at 1450 RPM — inspect at shortened intervals
  when operating at the higher rated speed
• OEM AR seal and valve kits should be stocked as part of
  your facility’s spare parts inventory to support planned rebuild cycles and
  eliminate sourcing delays during unscheduled service events

Ideal Applications for the RF39.400N

• Heavy equipment and fleet washing — trucking fleets,
  bus operations, municipal vehicles, and construction equipment where thick
  deposits and road contamination must be removed quickly at scale
• Industrial surface and floor cleaning — large concrete
  bays, loading docks, ramps, parking structures, and production floors where
  high flow reduces cleaning cycle times
• Manufacturing and process facility washdown — equipment
  washdown, pit and trench cleaning, and production floor sanitation
  requiring maximum throughput
• Rotary head and multi-jet bar systems — at 12.4 GPM
  and 5800 PSI at 1750 RPM, the RF39.400N delivers the hydraulic power
  required to drive large rotary tools and multi-jet manifolds that lower-flow
  pumps cannot sustain
• Oil and gas service yards and tank farms — equipment
  cleaning and yard maintenance in systems designed to meet applicable
  safety and material compatibility requirements
• Environmental and remediation services — spill response,
  containment area cleanup, recycling and transfer station maintenance where
  heavy residues require sustained high-pressure removal
• Building exterior restoration — large-scale mildew
  treatment, graffiti removal, and surface cleaning on commercial and
  industrial structures

Why Choose the AR RF39.400N?

• Dual-speed flexibility from one pump: Manufacturer-approved
  10.3 GPM at 1450 RPM and 12.4 GPM at 1750 RPM — the RF39.400N gives OEM
  builders and contractors a versatile, future-ready platform that grows
  with your drive configuration
• Highest flow in the RF Series at 5800 PSI: No other
  RF Series model delivers more GPM at this pressure — the RF39.400N is
  the top-tier choice for large-scale industrial cleaning and
  surface treatment
• Proven Series 538 RF architecture: Ceramic plungers,
  brass manifold, bronze connecting rods, oversized bearings, and oil-bath
  lubrication — all engineered for continuous-duty industrial operation
• Compact and skid-ready: At 48.5 lbs with a 30 mm solid
  shaft, the RF39.400N fits a wide range of industrial drive and mounting
  configurations without special hardware
• Fast, low-tool serviceability: Valve cap access,
  oil-level indicator, and standardized AR service kits keep maintenance
  efficient and turnaround times short
• Backed by AR North America: Factory support, nationwide
  service dealer network, and full parts and kit availability across
  the U.S. and Canada

The AR RF39.400N is built for the demands of serious industrial
work — delivering 10.3 GPM at 1450 RPM or 12.4 GPM at 1750 RPM, all at 5800 PSI,
from a compact, service-friendly platform trusted by industrial professionals worldwide.
Contact WSHPWR for current pricing, availability, and expert system integration support.