RF27.400N | Industrial Triplex Pump, 7.1 GPM 5800 PSI

RF27.400N Industrial Triplex Plunger Pump — 7.1 GPM @ 1450 RPM | 8.6 GPM @ 1750 RPM | 5800 PSI

The AR RF27.400N is an industrial-duty triplex plunger pump from
Annovi Reverberi’s Series 538 RF platform, engineered for applications that demand
high pressure, consistent hydraulic output, and long-term reliability across continuous
operational shifts. The RF27.400N is dual-rated — delivering
7.1 GPM at 1450 RPM or 8.6 GPM at 1750 RPM, both
at a maximum of 5800 PSI (400 Bar) — giving system designers and OEM
builders the flexibility to optimize throughput 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 RF27.400N
delivers the pressure consistency, volumetric output, and mechanical endurance that
industrial contractors, fleet wash operations, process facilities, and plant maintenance
teams depend on. At 48.5 lbs with a compact industrial footprint, the RF27.400N
integrates cleanly into belt-drive, gearbox, and hydraulic motor configurations across
skid, trailer, and fixed-plant installations in demanding industrial environments.

RF27.400N Dual-Speed Performance Specifications

• Max Flow @ 1450 RPM: 7.1 GPM (27 L/min) — standard operating
  speed for belt-drive diesel, electric motor, and gearbox-driven configurations
• Max Flow @ 1750 RPM: 8.6 GPM (~32.5 L/min) — increased output
  when driven by higher-speed electric motors or upgraded drive systems; approximately
  21% 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: 28.3 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: 17.5 mm
• Crankshaft ID Stamp: 2
• 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
• Weight: 48.5 lbs
• Series: 538 (RF) | Industrial | CSID Stamp: 2
• Orientation: Horizontal

RF27.400N Dual-RPM Rating — System Design Guidance

• One pump, two operating points: The RF27.400N 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 drive
  configurations or increase output without replacing hardware
• Flow scales with shaft speed; pressure is constant: At
  1450 RPM the RF27.400N delivers 7.1 GPM. Increasing shaft speed to 1750 RPM
  raises output to approximately 8.6 GPM. The 5800 PSI maximum pressure rating
  applies unchanged 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 thermal load are priorities alongside reliable high-pressure output
• 1750 RPM operation: Suited for higher-speed electric motor
  drives where maximum throughput is the priority — delivering approximately
  21% more flow from the same RF27.400N pump
• Drive sizing at 1750 RPM: Ensure your 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
• System components at 1750 RPM: Hose, valves, unloader,
  and fittings must all be rated for 5800 PSI at the higher flow rate — verify
  all downstream component ratings before upgrading drive speed on an
  existing installation
• Note: The 1750 RPM dual rating is manufacturer-approved
  by Annovi Reverberi and will appear in official AR product literature
  beginning 2027

RF27.400N Triplex Plunger & Wet-End Construction

• Full ceramic plungers — 22 mm bore, 17.5 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 long-duration operation —
  resisting distortion and internal leakage even under prolonged high-load output
• Inlet and discharge valves with optimized timing and 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
  RF27.400N from the system — reducing service time and minimizing downtime costs
• Bronze connecting rods driven by a precision-ground crankshaft
  deliver smooth, durable power transfer to the ceramic plungers at both rated
  speeds, maintaining accurate stroke and alignment for consistent volumetric output

RF27.400N Crankcase, Shaft & Lubrication System

• 30 mm solid N-version crankshaft — high-strength pressed
  steel 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 RF27.400N is mounted on steel skids, plant frames, trailer
  rigs, or mobile industrial platforms
• Oversized main bearings absorb both 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 — supporting stable oil temperatures and long component life
• Side cover oil level indicator option and rear cover oil
  drain simplify routine checks and scheduled changes without removing the
  RF27.400N from service
• Initial oil change at 50 operating hours, then per
  duty-cycle schedule — use SAE 30 non-detergent or AR-approved pump oil
  for optimal crankshaft and bearing protection

RF27.400N 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
• FNPT threaded ports on inlet and discharge connect directly
  to existing manifolds, header systems, and wash bay plumbing without proprietary
  fittings or adapters
• Compact footprint at 48.5 lbs enables mounting on enclosed
  cabinets, mobile platforms, and fixed industrial frames while maintaining adequate
  clearance for safety guards and service access
• Multi-pump configurations: The RF27.400N operates effectively
  as a standalone industrial pump or within a parallel pump arrangement for system
  redundancy, staged operation, or flow multiplication across large 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

RF27.400N 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, particularly at 1750 RPM where volumetric demand
  increases to 8.6 GPM
• Inlet filtration required: Install a minimum 20-mesh
  strainer upstream to protect ceramic plungers and brass valves from abrasive
  particle damage and accelerated wear 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 RF27.400N during low-flow or bypass conditions at
  either operating speed
• Bypass cooling strategy: For systems with frequent or extended
  bypass operation, size bypass lines, tank volume, and cooling capacity adequately
  to prevent thermal buildup in recirculating fluid — especially important at
  1750 RPM operation

RF27.400N Maintenance & Serviceability

• Valve cap access points on both suction and delivery sides
  provide direct valve inspection, cleaning, and replacement access without removing
  the RF27.400N from the system or requiring 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 RF27.400N 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 — 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 — operations running multiple RF Series units
  should standardize on common kits to streamline fleet service and eliminate
  sourcing delays during unscheduled events

Ideal Applications for the RF27.400N

• Fleet wash systems — trucking, bus, municipal, and transit
  fleet operations requiring sustained high pressure and stable hydraulic output
  across long daily wash cycles
• Industrial surface and floor cleaning — concrete bays,
  loading docks, ramps, and facility pads where thick buildup and heavy staining
  must be removed rapidly with high-impact pressure
• Rotary head and multi-jet bar systems — the RF27.400N
  provides the hydraulic power required for rotary tools and multi-jet bars used
  in surface restoration, preparation, and deep cleaning
• Manufacturing and process facility washdown — equipment
  washdown, pit and trench cleaning, and production floor sanitation in
  high-throughput industrial environments
• Refineries, mills, and utility facilities — washdown and
  maintenance cleaning within rated temperature and material compatibility limits
• Environmental and waste management services — recycling
  center cleanup, waste handling facility maintenance, and containment area
  cleaning where heavy residues require sustained high-pressure removal
• Building exterior maintenance — graffiti removal, mildew
  treatment, and surface restoration on commercial and industrial structures
  when paired with appropriate high-pressure tooling

Why Choose the AR RF27.400N?

• Dual-speed flexibility from one pump: Manufacturer-approved
  7.1 GPM at 1450 RPM and 8.6 GPM at 1750 RPM — the RF27.400N gives OEM
  builders and contractors a versatile platform that delivers more output
  simply by upgrading drive speed
• 5800 PSI at industrial flow rates: The RF27.400N delivers
  the combination of pressure and volume needed for rotary tools, multi-jet
  manifolds, and heavy industrial cleaning that lower-pressure pumps cannot match
• Proven Series 538 RF architecture: Ceramic plungers, brass
  manifold, bronze connecting rods, oversized bearings, and oil-bath lubrication —
  all engineered and factory-tested for continuous-duty industrial operation
• Compact and skid-ready: At 48.5 lbs with a 30 mm solid shaft,
  the RF27.400N fits a wide range of drive and mounting configurations without
  special hardware or adapters
• Fast, low-tool serviceability: Valve cap access on both sides,
  oil-level indicator, and standardized AR service kits keep maintenance efficient
  and turnaround times short across single-unit and multi-pump installations
• 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 RF27.400N is built for serious industrial work — delivering
7.1 GPM at 1450 RPM or 8.6 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.