XMASS42G20E-F33-SX | 4 GPM 2000 PSI Pump LH Shaft 56C Flange

Overview

The Annovi Reverberi XMASS42G20E-F33-SX is an industrial-duty
triplex plunger pump engineered for electric-motor driven wash systems that
need reliable, medium-pressure cleaning power in a compact footprint. Rated
up to 4.0 GPM at 2,000 PSI and designed for
1,750 RPM operation, this left-hand shaft stainless-series
pump delivers strong impact force for commercial and light industrial cleaning
while keeping water usage and overspray under control. The “E-F33-SX”
configuration combines a 5/8″ hollow shaft with an F33 electric motor
flange and left-hand orientation, making it ideal for tight OEM layouts,
mirrored pump sets, and wall- or skid-mounted packages.

• Triplex plunger pump rated to 4.0 GPM, 2,000 PSI at 1,750 RPM.
• 5/8″ hollow electric shaft with F33 flange for direct-drive motors.
• SX left-hand shaft for mirrored or space-constrained builds.
• Brass head, ceramic plungers, and aluminum connecting rods for long service life.
• Approximate weight around 17 lb for easy integration into skids and cabinets.

Performance and Pump Design

The XMASS42G20E-F33-SX is designed around AR’s proven triplex plunger
architecture, delivering smooth, consistent pressure that protects hoses,
guns, and accessories from excess pulsation. The 4 GPM / 2,000 PSI duty point
is a sweet spot for single-gun wash bays, wall-mount electric pressure
washers, and process-cleaning systems where dependable pressure and moderate
flow are more important than extreme PSI.

• Balanced duty point: 4.0 GPM at 2,000 PSI for effective cleaning and rinsing.
• Stable output: three synchronized plungers reduce pressure ripple and “hose kick.”
• 1,750 RPM speed: slow enough to run cooler and extend seal and bearing life.
• Ideal for cold- and warm-water systems up to typical 140°F ranges.

Triplex plunger advantages

Triplex pumps use three plungers phased 120 degrees apart to create a more
continuous flow curve than single- or twin-piston alternatives. This improves
cleaning consistency and reduces stress on system components.

• Improved operator control with smoother spray patterns.
• Better accessory life for guns, lances, swivels, and turbo nozzles.
• More stable performance across a range of nozzle sizes and hose lengths.

Construction and Materials

Built for industrial environments, the XMASS42G20E-F33-SX combines a forged
brass pump head with a robust crankcase and premium internal components. The
brass head offers excellent strength and corrosion resistance, while ceramic
plungers and stainless steel valves handle continuous pressure cycling and
frequent start–stop duty.

• Manifold head: forged brass for strength and corrosion resistance.
• Plungers: solid ceramic plungers to minimize scoring and wear.
• Valves: stainless steel valve assemblies for reliable sealing at 2,000 PSI.
• Connecting rods: low-friction aluminum rods designed for continuous service.
• Crankcase: die-cast aluminum with cooling fins and oil-bath lubrication.

Wet-end durability of XMASS42G20E-F33-SX

The wet end is engineered to hold up in demanding daily use. High-pressure
packings, low-pressure seals, and quality O-rings keep water where it belongs
and protect the crankcase from contamination.

• High-pressure packings designed for long life under continuous duty.
• Low-pressure seals and oil seals to keep the crankcase clean and dry.
• Typical inlet of 1/2″ F and outlet of 3/8″ F for robust plumbing connections.
• Serviceable design with head bolts and valve plugs accessible using standard tools.

SX Left-Hand Shaft and F33 Electric Flange

The XMASS42G20E-F33-SX uses a 5/8″ hollow “E” shaft
combined with an F33 electric motor flange, but in a
left-hand (SX) orientation. This makes it especially useful in applications
where two pumps must mirror each other, or where the drive side needs to be
oriented away from walls, tanks, or other equipment.

• Left-hand shaft (SX): simplifies mirrored twin-pump layouts and tight skid geometry.
• Direct-drive friendly: mounts directly to compatible 56C-style electric motors.
• Can also be used with flexible couplings or pulley arrangements where needed.
• Compact design keeps overall system footprint small for wall-mount or cabinet builds.

Serviceability

Like other XM/XMASS family pumps, this model is designed with maintenance in
mind. Common wear parts are available in standardized kits, and clear access
to valves and seals helps minimize downtime during overhauls.

• Standard valve, water seal, and oil seal kits available through AR distributors.
• Side sight glass and fill/dipstick make oil checks simple.
• Head and valve design allows quick inspection and rebuilds with basic tools.

Typical Applications

With its 4 GPM, 2,000 PSI performance and compact, electric-drive layout, the
XMASS42G20E-F33-SX is ideal for a wide range of commercial and light
industrial systems where reliability, efficiency, and space-saving design are
priorities.

• Wall-mount electric pressure washer systems in shops and garages.
• Wash bays for vans, light trucks, forklifts, and rental fleets.
• Equipment wash stations in manufacturing, recycling, and warehouse facilities.
• Agricultural equipment rinsing and general farm maintenance.
• OEM skid or cabinet-style pressure washer packages for contractors and facilities.

Key Specifications – XMASS42G20E-F33-SX

• Model: XMASS42G20E-F33-SX.
• Max flow: 4.0 GPM.
• Max pressure: 2,000 PSI.
• Rated speed: 1,750 RPM.
• Shaft type: 5/8″ hollow “E” shaft, left-hand (SX) orientation.
• Flange: F33 electric motor flange (56C-style compatibility).
• Head material: brass manifold.
• Plungers: solid ceramic.
• Connecting rods: aluminum alloy.
• Lubrication: oil-bath crankcase with sight glass.
• Max fluid temperature: typically 140°F (60°C) in cold/warm water systems.
• Approximate weight: about 17 lb.