Description
The RK1528HN is a high-performance triplex plunger pump from the Annovi Reverberi (AR) RK Series. Built for heavy-duty industrial and commercial use, this pump is a favorite for belt-drive systems and custom-built pressure washing skids due to its “low-speed” 1450 RPM design.
RK1528HN Industrial Triplex Pump
Premium Durability | 4.0 GPM | 4000 PSI
The RK1528HN is engineered for reliability under pressure. By operating at 1450 RPM, the pump runs significantly cooler and with less vibration than high-speed direct-drive models. This translates to a much longer lifespan for the valves, plungers, and seal packings, making it ideal for daily professional use.
Core Specifications
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Flow Rate: 4.0 GPM (15.1 L/min)
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Maximum Pressure: 4000 PSI (275 bar)
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Rotation Speed: 1450 RPM
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Shaft Dimensions: 24mm Diameter x 30mm Length (Solid Shaft)
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Power Requirement: Requires approximately 11.0 to 13.0 HP for full performance.
Key Features
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Forged Brass Manifold: Designed to handle high-pressure cycles without fatigue or cracking.
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Solid Ceramic Plungers: Precision-ground ceramic provides a diamond-hard, smooth surface that resists heat and chemical abrasion.
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High-Strength Connecting Rods: One-piece aluminum alloy or bronze rods provide excellent load distribution and durability.
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Dual-Sided Oil Sight Glass: Allows the operator to check oil level and quality (clarity) regardless of how the pump is mounted.
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Oversized Bearings: Premium tapered roller bearings support the crankshaft for smooth operation and minimal internal friction.
Ideal Applications
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Industrial Pressure Washers: Perfect for truck washes, construction site cleanup, and masonry restoration.
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Belt-Drive Systems: The solid 24mm shaft is designed for pulley-and-belt setups, allowing for easy engine/motor pairing.
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Hydrostatic Pipe Testing: Reliable enough for steady-state pressure holding in pipeline maintenance.
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Commercial Car Wash: Durable enough for the rigors of continuous-duty cycles.
Technical Summary
| Feature | Specification |
| Model | RK1528HN |
| GPM | 4.0 |
| PSI | 4000 |
| RPM | 1450 |
| Shaft Type | 24mm x 30mm Solid |
| Inlet Port | 1/2″ FPT |
| Outlet Port | 3/8″ FPT |


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