Annovi Reverberi RCA Hollow-Shaft Pumps (F8 Flange)

Annovi Reverberi's RC Series triplex plunger pumps are the compact brass-head workhorses of residential electric pressure washers — ceramic plungers, aluminum connecting rods, and a brass head in a small footprint. CheapPartz stocks the two F8 hollow-shaft versions: the RCA35G16E-F8 (3.5 GPM, 1600 max PSI) and the RCA3G25E-F8 (3 GPM, 2500 max PSI), both at $732.77 and both spinning at 1750 RPM (prices at the time these pages were consolidated; live prices are on the variant cards below).

The two models are twins except for the flow/pressure trade. The RCA35G16E-F8 (also listed as RCA3.5G16E-F8) moves more water — 3.5 GPM — at a lower peak pressure of 1600 PSI, the pick for volume work like rinsing and flushing. The RCA3G25E-F8 trades flow for pressure: 3 GPM at 2500 max PSI, better at blasting stubborn grime. Both carry the ‘E’ suffix: a 5/8-inch hollow shaft with an F8 (NEMA 56C) flange that mounts directly onto an electric motor shaft, and both are rated for direct or pulley driving.

Fitment is strict. Match the full model number on your pump's data plate and verify the 5/8-inch hollow shaft and F8 flange pattern against the old pump — the RCA35G16E-F8 is a common replacement on residential electric pressure washers from brands such as Hydrotek, Delco, and Northern Tool. Note the sibling RCA3G25N is a different animal: a 24mm solid shaft for belt, coupling, or gear drive rather than hollow-shaft direct mounting (linked below).

Available Variants

Side-by-Side Comparison

SpecRCA35G16E-F8RCA3G25E-F8
Max flow3.5 GPM3 GPM
Max pressure1,600 PSI2,500 PSI
Speed1,750 RPM1,750 RPM
Shaft5/8" hollow5/8" hollow
FlangeF8 (NEMA 56C)F8 (NEMA 56C)
Pump headBrassBrass
PlungersCeramicCeramic
DriveDirect or pulleyDirect or pulley

Which Variant Should You Choose?

RCA35G16E-F8

Choose the RCA35G16E-F8 when you want higher flow at lower pressure — 3.5 GPM at 1600 max PSI suits volume work like rinsing and flushing.

RCA3G25E-F8

Choose the RCA3G25E-F8 when you want higher pressure at lower flow — 3 GPM at 2500 max PSI suits blasting stubborn grime.

Fitment

Match the full model number on your pump's data plate — RCA35G16E-F8 and RCA3G25E-F8 differ in flow and pressure, and neither interchanges with the solid-shaft RCA3G25N. Verify the 5/8-inch hollow shaft and F8 (NEMA 56C) flange pattern against the old pump. Both are residential-duty replacements for electric pressure washers.

Related but Separate

Annovi Reverberi RCA3G25N

Same 3 GPM / 2500 PSI / 1750 RPM rating as the RCA3G25E-F8, but with a 24mm solid shaft for belt, coupling, or gear drive instead of hollow-shaft direct mounting — about 10 lbs, 1/2" F inlet, 3/8" F discharge, 140°F max water temperature.

Frequently Asked Questions

What's the difference between the E and N versions?

‘E’ means a 5/8-inch hollow shaft with an F8 flange for direct mounting on an electric motor shaft. ‘N’ (the RCA3G25N) means a 24mm solid shaft for belt, coupling, or gear drive — a completely different mounting arrangement.

Do both pumps cost the same?

At the time these pages were consolidated, both were $732.77. Live prices are on the variant cards below.

How do I confirm one of these fits my pressure washer?

Match the full model number on the pump data plate and check the 5/8-inch hollow shaft size and F8 flange against the old pump before ordering.