AR RKW1514N Solid Shaft Specialty Pump

The RKW1514N sits in Annovi Reverberi’s specialty series for demanding industrial and commercial duty—where low RPM, stable pressure, and long service life matter more than raw peak output. Turning at just 950 RPM, the RKW1514N is engineered to run cool and smooth in continuous-duty installations. At 15 L/min (4.0 GPM) and 140 bar (2000 PSI), it provides the dependable hydraulic backbone for specialty wash, CIP/rinse, reclaim water systems, and light chemical transfer where uptime is everything.
Built for longevity in harsh conditions.

What separates the RKW1514N from commodity pumps is its materials and mechanical design. A nickel-plated brass head delivers superior resistance to corrosion and hard-water scaling compared to bare brass—critical if you operate with reclaimed water or detergents. Bronze connecting rods outperform aluminum under heat and load, and oversized bearings support the crankshaft to minimize vibration at low RPM. The heavy-duty crankcase and 13.35 oz oil capacity provide the film strength and cooling needed for long duty cycles.

For sites handling chemicals or hot-water rinse, Viton water seal options add compatibility headroom. Combined with conservative running speed, the seal package helps extend maintenance intervals—one of the biggest drivers of total cost of ownership on multi-shift operations.
Low-RPM philosophy: why 950 RPM pays off
Running at 950 RPM reduces friction and heat at every wear interface—plunger seals, crank pins, bearings, and valves. Lower speed also softens pulsation, improving gauge stability and unloader behavior. The net effect: longer seal life, quieter operation, and fewer surprises in bypass or under fluctuating flow. If your application values predictable pressure and high MTBF over headline PSI, the RKW1514N is a smart fit.
Core specifications (N version)

• Performance: 4.0 GPM @ 2000 PSI (15 L/min @ 140 bar)
• Speed: 950 RPM (low-speed specialty duty)
• Shaft: 20 mm solid shaft, N version
• Head material: Nickel-plated brass
• Internals: Bronze connecting rods, oversized bearings
• Oil capacity: 13.35 oz
• Ports: 1/2″ F inlet / 3/8″ F discharge
• Seals: Available with Viton water seals for chemical environments

Power planning: Estimated brake horsepower (EBHP) ≈ (GPM × PSI) / 1460 → (4.0 × 2000) / 1460 ≈ 5.5 HP.
Torque reference: HP = (Torque × RPM) / 5252 → Torque ≈ 30 ft-lb at 950 RPM (≈ 41 N·m). Size your motor/engine with headroom for temperature, elevation, and line losses.

AR RKW1514N Solid Shaft Specialty Pump

Integration made simple
The compact footprint and 20 mm solid shaft make the RKW1514N easy to integrate on a baseplate with an electric motor or engine via belt-drive or flex coupling. Many specialty rigs prefer belt-drive for gear reduction, vibration isolation, and guardable power transmission.
Pulley math (example): If your motor turns 1750 RPM and the pump needs 950 RPM, your reduction ratio is 0.543 (950/1750). Choose pulley diameters in that ratio (e.g., 3.0″ motor to 5.53″ pump). Verify guard clearance, belt section (A/B), and center distance for easy tensioning.
Unloader/regulator: Mount close to the pump for fast response, route bypass smoothly (no tight elbows), and return to tank on hot-water systems to prevent recirculating heat into the inlet.
Filtration: Oversize the in-line inlet filter to protect valves and seals, especially with reclaim water. A clean inlet is the cheapest insurance against cavitation.
Where the RKW1514N excels

• Specialty car wash and vehicle wash systems: Low-RPM stability improves finish quality and component life.
• Industrial washdown (food plants, workshops, factories): Consistent 2000 PSI for rinse and sanitation; nickel-plated head resists chemicals.
• Agricultural irrigation and spraying: Steady flow for booms and sprayers; low heat rise benefits long runs.
• Municipal services: Portable wash rigs, facilities maintenance, and public works where reliability beats peak pressure.
• Custom equipment builds: Low RPM, 20 mm solid shaft, and compact form simplify layout and guarding.
• Detergents, reclaim water, mild chemicals: Add Viton seals for compatibility and service life.

AR RKW1514N System design checklist (get it right the first time)

1. Confirm duty cycle: If you run long bypass periods, incorporate a thermal relief valve to protect seals.
2. Match power: Allow ≥15–20% HP margin over the ~5.5 HP requirement for heat, altitude, and hose length.
3. Plumbing size: Keep suction plumbing short and straight; use full-flow valves and 1/2″-equivalent or larger where possible to minimize inlet restriction.
4. Nozzle selection: Orifice governs pressure. If pressure drifts low under load, verify that the nozzle hasn’t worn larger—replace as needed.
5. Unloader setting: Set with trigger open, verify in bypass, and lock the jam nut or cap.
6. Bypass routing: For hot water or high ambient, return bypass to tank; avoid heating the inlet.
7. Instrumentation: A glycerin-filled gauge near the head plus a thermistor or relief on the bypass keeps you ahead of problems.

AR RKW1514N Maintenance made practical

• Oil service: First change at ~50 hours, then follow AR guidance. Watch for milky oil (water intrusion).
• Seal care: Inspect for weepage and replace water seals before pressure fade accelerates wear.
• Valve service: If startup pressure is slow to rise or pulsation increases, a valve kit restores crisp sealing.
• Inlet housekeeping: Keep strainers clean; grit scores seats and shortens seal life.
• Storage: If freezing is possible, winterize with pump saver to protect seals and plunger surfaces.

A proactive parts drawer—Viton seal kit, valve kit, O-rings, and oil—turns potential downtime into a quick pit stop.
Why choose nickel-plated, low-RPM for specialty work?

• Corrosion resistance: Nickel plating resists aggressive water and many detergents.
• Lower heat and wear: 950 RPM operation reduces thermal load and extends seal/bearing life.
• Pressure stability: Smoother pulsation improves unloader behavior and gun response.
• Predictable cost of ownership: Longer intervals between seal and valve service mean fewer interruptions and labor hours.

AR RKW1514N Key Features & Applications (recap)
Performance: 4.0 GPM @ 2000 PSI (15 L/min @ 140 bar)
RPM: 950 RPM low-speed specialty duty
Shaft: 20 mm solid shaft, N version
Construction:

• Nickel-plated brass head for corrosion resistance
• Bronze connecting rods for continuous duty strength
• Oversized bearings with high-capacity crankcase oiling
•  Seals: Optional Viton water seals for chemical compatibility
•  Oil Capacity: 13.35 oz crankcase
•  Inlet/Discharge: 1/2″ F inlet / 3/8″ F discharge

AR RKW1514N Applications:

• Specialty car wash and vehicle wash systems
• Industrial washdown (food plants, shops, factories)
• Agricultural irrigation and spraying
• Municipal portable wash rigs and public works
• Custom low-RPM equipment builds
• Systems handling detergents, reclaim water, or mild chemicals with Viton seals

The takeaway the AR RKW1514N
If your spec calls for steady 2000 PSI, 4.0 GPM flow, and low-RPM durability, the AR RKW1514N delivers. Its nickel-plated brass head, bronze rods, oversized bearings, and 20 mm solid shaft are purpose-built for long life, while the Viton-ready seal options and compact footprint make integration straightforward. Pair it with the right motor, pulley ratio, filtration, and unloader setup, and you’ll have a specialty pump that runs cool, holds pressure, and keeps maintenance predictable—shift after shift.

For additional industry standards and technical resources, visit: https://www.pumps.org/