Zeta PP42 3/4" Shaft 10.5GPM 300/550PSI Softwash Pump

High-Volume Flow, Chemical Resistance, and Professional Soft Wash Performance

The Zeta PP42 3/4" Shaft 10.5 GPM Softwash Pump is purpose-built for the soft wash industry, offering the right combination of flow, psi, and chemical durability required for modern soft wash systems. With a high flow rate of 10.5 GPM, operating pressure of 300 PSI, and a maximum 550 PSI, this soft wash pump delivers the output needed to cover large areas quickly while remaining gentle enough for soft wash applications on roofs, siding, stucco, brick, and other delicate surfaces.

Engineered as a heavy-duty diaphragm pump, the PP42 is designed to handle sodium hypochlorite, surfactants, and other highly corrosive chemicals commonly used in exterior cleaning. Its rugged build ensures fewer breakdowns, smoother spraying, and long-term dependability that professionals can rely on during daily jobs.

High-Volume Output for Faster Soft Washing

The defining advantage of the PP42 is simple: more volume. Soft washing depends on delivering enough flow to fully saturate the surface, allowing the chemical blend to dwell long enough to break down stains and organic growth. This pump’s 10.5 GPM performance helps:

• Produce wide, even spray patterns

• Improve chemical dwell time

• Increase spray distance for multi-story work

• Reduce streaking and overspray

• Finish each job faster, with less pulling the hose

Professional contractors spend less time waiting for chemicals to travel through the tank, hose, and gun, and more time actually cleaning.

Built for Chemical Resistance and Long Service Life

Because soft wash pumps run bleach-heavy blends, choosing the correct materials is critical. The Zeta PP42 uses a chemically resistant wet-end designed specifically for soft wash use, including:

• Diaphragm pumps engineered for tough chemicals

• Corrosion-resistant internal materials

• High-strength diaphragms capable of handling chlorine, bleach, and surfactants

• Sealing systems that reduce the chance of a leak

This pump is a long term solution, built for professionals who spend long hours on the job and require reliability across every soft wash system.

Optimized Pressure for Professional Soft Wash Application

Operating at low pressure but high volume, the PP42 creates the ideal environment for gentle cleaning without surface damage. The 300 PSI operating range and 550 PSI max provide:

• Strong spray distance for roofs and upper floors

• Faster priming and more efficient system startup

• Compatibility with standard soft wash nozzles, gun assemblies, and wands

• Controlled delivery for delicate surfaces

This pressure profile is perfect for pros who need a pump that is capable of distance without relying on damaging pressure washer force.

3/4" Solid Shaft for Easy Integration

The standard 3/4" shaft makes the PP42 simple to connect to a wide range of motor types and drive configurations. Whether your setup uses:

• Gas engines

• Electric motor drives

• Trailer or truck system builds

• Skid-mounted rigs

…the PP42 adapts easily. Its design makes it simple to replace older softwash pumps or integrate into new rigs entering the market.

Heavy-Duty Diaphragm Pump Design

As a true diaphragm pump, the PP42 helps prevent overheating, maintains strong priming characteristics, and reduces the risk of chemical ingestion that damages standard pumps. Diaphragm technology also ensures clean, predictable spraying even during long cycles.

Because soft washing involves long trigger-on periods, this pump is engineered to extend pump life, reduce vibration, and prevent premature part break failures.

Ideal for Professional Soft Wash Installations

The PP42 is perfect for:

• Soft wash pump and softwash pump replacements

• Chemical applications requiring stable flow

• Multi-story roofs and siding

• Commercial building washing

• High-volume rinsing and chemical application

• Systems using pressure switch automation to ensure the pump shuts and shuts off cleanly

Its ability to produce large amounts of liquid quickly makes it an essential tool in the professional soft wash world.

Professional Performance, Built for the Field

The Zeta PP42 Softwash Pump offers unmatched performance, durability, and practical reliability. Whether you’re developing a new setup, upgrading a rig, or stocking (stock) replacement pumps, this model delivers the perfect combination of flow, psi, and chemical resistance.