AR ANNOVI REVERBERI RMV25G30D-EZ Plunger Pump 3,000 PSI 2.5 GPM — EZ Start, 3/4" Hollow Shaft, Aluminum

This compact, die-cast aluminum pump is designed for pressure-washer builds and replacement applications where a rugged, accessory-ready unit is needed. It runs at 3,400 RPM in direct-coupled systems, includes an integral pressure control valve and chemical injection capability, and fits common 3/4" shaft engines in the 4–7 HP range. The RMV25G30D-EZ swaps into many OEM models and aftermarket units, making it a practical choice whether you are repairing a machine or assembling a custom cleaning system.

How does this pump handle high-pressure cleaning tasks?

The RMV25G30D-EZ uses three alternating volumetric pistons driven by a swash-plate mechanism to produce consistent flow and pressure. Its brass pump head and hardened steel pistons resist wear under continuous loads, while a double-gasket seal reduces leakage risk.

• Maximum pressure: 3,000 PSI (200 bar)
• Flow rate: up to 2.5 GPM (9.5 L/min)
• Pump head: pressed forged brass for corrosion resistance
• Pistons: hardened and tempered steel for long life

What makes installation and pairing with an engine straightforward?

The unit features a hollow 3/4" shaft and a flange compatible with many 4–7 HP gasoline engines, allowing direct coupling without a gearbox. The EZ start valve helps reduce initial crank effort, and the pump's discharge and inlet threads follow common industry sizes for straightforward hose and fitting connections.

• Shaft size: 3/4" hollow for direct drive
• RPM rating: 3,400 RPM for typical gasoline engines
• Inlet thread: 3/4" GHA; outlet: 22mm x 1.4 M
• Fits many OEM models from Briggs & Stratton, Campbell Hausfeld, Honda and more

Which durability and maintenance features reduce downtime?

This pump combines two bearing systems to properly support the shaft and pistons, and a double gasket sealing system to minimize leaks. Intake valve placement above the pistons increases efficiency and lowers cavitation risk; oil capacity and temperature limits are clearly specified to keep service simple.

• Two bearing supports for shaft and piston stability
• Double gasket seals to reduce leakage and service frequency
• Oil capacity: 2.2 oz; max fluid temperature: 140°F
• Optional detergent suction system for chemical injection needs

What are the key specs I should confirm before buying?

Match the pump's rpm, shaft size, and inlet/outlet thread sizes to your engine and hose fittings to ensure compatibility. Confirm the desired maximum PSI and GPM align with your cleaning application so the pump delivers appropriate cleaning force without overloading the engine.

• Max GPM: 2.5 (9.5 L/min); Max PSI: 3,000
• Rated RPM: 3,400; bore/stroke: 12 mm / 9.7 mm
• Weight: 7.5 lb; shaft version: D (hollow)
• Power equivalence: ~5.1 EBHP

Who this is for: the RMV25G30D-EZ suits technicians and DIYers rebuilding or upgrading pressure washers, small engine mechanics replacing OEM pumps, and custom-builders needing a compact, reliable pump with EZ start and chemical injection. If you require a pump that pairs with common 3/4" shaft gasoline engines and delivers consistent mid-range pressure for general cleaning tasks, this model is a practical, serviceable choice.

• Features: Maximum psi: 3000
• Features: Maximum gallons per minute: 2.5 GPM
• Features: Rotations per minute (RPM): 3,400
• Features: Shaft direction: Standard
• Features: Start style: EZ Start