RKV35G40HF24VR3 | 3.5 GPM 4000 PSI Gas Engine Pump with VR3 Unloader, 1 in. Hollow Shaft
The RKV35G40HF24VR3 is an Annovi Reverberi RK triplex plunger pump rated 3.5 GPM at 4,000 PSI at 3400 RPM, with a nickel-plated head and an AR VR3 unloader already installed. It slides onto a 1 in. engine shaft, bolts to the engine face, and is ready to plumb: no belts and no separate unloader to buy.
The VR3 has an external bypass port that sends bypass water out of the pump instead of recirculating it inside, which keeps the pump cooler when the trigger is closed. The nickel-plated head adds corrosion resistance over plain brass, and the crankshaft-driven triplex with ceramic plungers rebuilds with a kit when the seals finally wear.
What’s in the Box
- RKV35G40HF24VR3 pump with F24 engine flange and nickel-plated head
- VR3 unloader, installed
- Crankcase oil, pre-filled at the factory
- Vented dipstick. The pump ships with a shipping plug in the oil port. Swap in the dipstick before the first start.
- Engine mounting bolts and lock washers
- Operation manual and parts schematic
- 5-year Annovi Reverberi warranty
The shaft key is not included. It comes with your engine, and its size is set by the engine maker.
Will It Fit My Machine?
- Shaft: your engine has a 1 in. keyed horizontal shaft.
- Mount: the engine face matches the F24 flange bolt pattern.
- Engine size: 389cc to 420cc (13 HP class and up).
- Bypass line: the VR3 has an external bypass port. Run a bypass line back to the tank or pump inlet.
- Hose and accessories: every hose, fitting and nozzle must be rated for 4,000 PSI.
Not sure? Text a pump specialist at (505) 226-6061 with a photo of your engine tag and we’ll confirm the fit.
What Else You’ll Need
- Thermal relief valves and inlet filters: the thermal valve protects the pump during long bypass periods, and the filter keeps debris out of the valves.
RKV35G40HF24VR3 Specifications
- Model: RKV35G40HF24VR3
- Flow: 3.5 GPM
- Max Pressure: 4,000 PSI
- Speed: 3400 RPM (engine speed)
- Gas Engine Size: 389cc to 420cc
- Shaft: 1 in. hollow
- Mount: F24 engine flange
- Head: Nickel-plated brass
- Unloader: AR VR3, installed, external bypass
- Plungers: Ceramic
- Max Water Temperature: 140°F
- Weight: 21 lbs
- Warranty: 5 years
- Brand: Annovi Reverberi
Shipping: Usually ships via UPS in 1 to 3 days.










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