YAMATIC Horizontal Triplex Pump — 3/4 Inch Shaft, 2800-3700 PSI, 2.5 GPM Replacement

Overview

The YAMATIC Horizontal Triplex Pressure Washer Pump is a purpose-built replacement designed to fit compatible horizontal 3/4 inch shaft cleaners. It supports a pressure range of 2800 to 3700 PSI and a flow rate of 2.5 GPM, ideal for a wide variety of home cleaning tasks. Engine compatibility generally includes 5 to 8 horsepower units, making it a versatile upgrade for many popular models.

With a focus on durability and steady performance, this pump blends upgraded materials with practical design choices. It’s tailored to slot into existing setups that use Simpson MorFlex models 40224, 40225, 40226, Santoprene model 41182, as well as common brands like Honda, Dewalt, AR, Powerstroke, Blackmax, Husky, and Excell. Note: it only fits horizontal 3/4" shaft engines, so verifying shaft type is advised before purchase.

Key Benefits at a Glance

• Longer running hours — the Triplex plunger design delivers smoother operation and continuous power output, contributing to more consistent cleaning sessions.
• Extended life — expected service life reaches up to about 500 hours, representing a substantial improvement over basic replacement pumps in typical usage scenarios.
• Upgraded durability — the pump head uses stronger materials, and the connecting rod benefits from forging technology, with a seal spring to help prevent loosening under vibration.
• Easy setup — the package includes essential accessories and a quick-install design, enabling installation in roughly 10 minutes: flange bolts, soap hose, five color spray tips, and shaft keys.
• Ready to go out of the box — comes pre-filled with SAE 15W-40 oil and requires an oil change every 50 hours of use to maintain performance.

Specs, Compatibility & Setup

• Works with 2800–3700 PSI and 2.5 GPM systems; compatible with engines in the 5–8 HP range.
• Horizontal 3/4" shaft configuration with defined mounting spacing for straightforward replacement.
• Fits select Simpson (40224/40225/40226), Santoprene 41182, and other major brands such as Honda, Dewalt, AR, Powerstroke, Blackmax, Husky, and Excell.
• Note: pre-filled SAE 15W-40 oil is included; remember to change the oil every 50 hours of use for best results.

Usage Scenarios

Ideal for routine home exterior cleaning, including driveways, patios, siding, fences, and vehicles. The design emphasizes steady pressure and reduced vibration, which can translate to smoother operation during longer cleaning sessions. While individual results vary, the pump aims to provide reliable power delivery within its stated specs.