3PG4440P — Bertolini Ready-to-Run Pump Package | 4400 PSI | 4.2 GPM | Pressure Pro Compatible | Plug QC Outlet

The 3PG4440P is the highest-flow model in WSHPWR’s bench-tested Bertolini ready-to-run pump package lineup. Built on the same forged brass head, bronze connecting rods, Super-U packing seals, and 4400 PSI-rated internals as the standard 3PG4440W, the 3PG4440P arrives pre-fitted with a professional accessory package — installed, tested, and ready for work the moment it leaves the box. At 4.2 GPM at 3450 RPM, the 3PG4440P is the highest-output configuration in the 3PG series and the preferred choice for contractors running larger surface cleaners, high-volume fleet washing, or any application where maximum flow is the priority. If you are replacing a pump on a Pressure Pro machine, the 3PG4440P plugs directly into your existing hose and gun without adapters.

What’s in the Box

Every 3PG4440P is bench tested at WSHPWR before shipment — 90 seconds at idle, followed by 90 seconds at full rated pressure — to verify pump integrity, plumbing seal quality, and workmanship. Each unit ships with the following installed and included:

• Fully Assembled Bertolini 3PG 4040-W Pump — Complete with built-in unloader valve, fixed 16% detergent injector, and brass barb. The highest-flow 3PG model, rated at 4400 PSI and exclusively available through WSHPWR.com for North America, Central America, and the Caribbean.
• SAE J609-1″ Flange with 4-Bolt and Washer Kit — Pre-attached mounting flange for seamless installation directly to your engine. All hardware included.
• Vented Dipstick — Installed prior to bench testing. Do not remove before field use. Critical for preventing crankcase vapor buildup and protecting seals during operation.
• 38FP — 3/8″ Female Steel Plug Quick Connect (Outlet) — Installed on the pump outlet port. The industry-standard quick-connect plug format used by Pressure Pro pressure washers, making the 3PG4440P a direct drop-in replacement. Durable steel body engineered for repeated coupling cycles and heavy wash-bay use while maintaining a leak-resistant, smooth-flow connection.
• 5332 — Garden Hose Adapter, 3/4 GH x 3/8″ Male (Inlet) — Installed on the pump inlet port. Connects a standard 3/4″ garden hose directly to the pump’s 3/8″ female thread inlet with no additional fittings required.
• TPP140-1/4 — Brass Thermal Relief Valve, 1/4″ (Upgraded Version) — Installed on the low-pressure manifold head port. Activates automatically at 140°F when the trigger is held closed during extended bypass, discharging overheated water and drawing in cooler supply. Protects seals, plunger surfaces, and valve seats from heat damage. The 3PG4440P uses the upgraded brass body version for superior corrosion resistance over standard aluminum versions.
• DETHOSE-FIL6 — 6 ft Detergent Hose with Red Weighted Debris Filter — Included for chemical feed setup. Six feet of chemical-resistant thermoplastic hose with an integrated red weighted filter that sinks to the bottom of the detergent container for consistent chemical pickup even as the tank empties. Captures debris and sediment before it reaches the injector.

Direct Replacement for Pressure Pro Pressure Washers

The “P” in 3PG4440P stands for Plug — the fitting format used by Pressure Pro pressure washers on their hose outlet interface. The 3PG4440P ships with the 38FP female steel plug installed on the outlet, which mates directly with the 3/8″ socket on your existing Pressure Pro hose and gun. No adapters. No rethreading. Your existing Pressure Pro hose pulls off the old pump and goes straight onto the 3PG4440P. Beyond fitting compatibility, the 3PG4440P is a meaningful performance upgrade — the forged brass head, bronze connecting rods, and Super-U packing seals represent a higher specification than the OEM pump on most Pressure Pro machines at any price point.

Bench Tested Before It Ships

Every 3PG4440P undergoes a documented bench test at WSHPWR prior to packaging — 90 seconds at idle power followed by 90 seconds at full rated pressure. This confirms pump performance integrity, verifies that all installed plumbing is leak-free, and validates workmanship quality before shipment. When the 3PG4440P arrives, it has already run.

The Forged Brass Head — Why It Matters

Bertolini starts with a solid billet of high-grade brass and subjects it to a precision hot-forging process. Forging aligns the grain structure of the metal — producing a head with higher tensile strength, better fatigue resistance, and zero porosity compared to cast alternatives. Once forged, the 3PG4440P head is CNC-machined in Bertolini’s Reggio Emilia facility using fully automated, custom-engineered tooling with inspection and verification at every stage. Every port, valve seat, and thread is cut to exact tolerances — no Loctite required on the valve caps.

Performance at Every Speed

The 3PG4440P is the highest-flow model in the 3PG series. All three operating speeds deliver 4400 PSI — match engine RPM to your flow requirement.

What’s Inside the 3PG4440P

• Forged Brass Head — 8-bolt crankcase attachment. Maximum rigidity under extreme pressure and overpressure events.
• LowStressthread™ Valve Caps — Recessed O-ring design. Thread never contacts pressurized water. No Loctite required. Torque reduced by 40%.
• AISI 316 Stainless Check Valves — Mirror-finish, rapid-action for corrosion resistance and maximum fluid dynamic efficiency.
• Super-U Packing Seals — Double-U self-lubricating composite seals prevent crankcase oil contamination.
• Tungsten Carbide-Coated Plunger Rods — Maximum wear resistance and volumetric efficiency.
• Bronze Connecting Rods (One-Piece) — Superior anti-friction performance and extended service life vs aluminum rods.
• Oversized Premium Bearings — Extended life even under heavy continuous-duty conditions.
• Die-Cast Aluminum Crankcase — Anti-corrosion alloy with diamond-tool machined plunger guide surfaces and enhanced cooling fins.
• Anti-LeakSystem™ — Head-to-crankcase dust exclusion system extends packing seal life in outdoor environments.

Specifications

Applications

• High-volume professional pressure washing and contract surface cleaning
• Large surface cleaner operation requiring maximum GPM
• Fleet and heavy equipment washing
• Self-service car wash bay systems
• Pre-painting and surface preparation
• Tank and vessel cleaning
• Mobile wash rigs requiring a ready-to-run high-flow pump package

3PG4440P — Direct Replacement for Pressure Pro + Why It Outperforms the OEM

The 3PG4440P is built specifically for contractors replacing the pump on a Pressure Pro pressure washer. The 38FP female steel plug on the outlet mates directly with the 3/8″ socket on your existing Pressure Pro hose — no adapters, no rethreading, no downtime between jobs. At $399 delivered to all 48 states, the 3PG4440P is not just a replacement — it is a meaningful upgrade over the OEM pump that came on your machine.

3PG4440P vs Pressure Pro OEM Pump

Not Just a Replacement — An Upgrade

When a pump fails on a Pressure Pro machine, the instinct is to replace it with the same thing. The 3PG4440P offers a better option — the same direct-fit connection, more PSI, more GPM, forged brass head instead of cast, solid ceramic plungers instead of ceramic-coated steel, bronze connecting rods, and a 7-year warranty that the OEM replacement cannot come close to matching. Your Pressure Pro machine runs better after this replacement than it did when it left the factory.

7-Year Warranty

The 3PG4440P carries Bertolini’s industry-leading 7-year warranty on the pump, backed by over 100 years of Italian engineering. WSHPWR.com-installed accessories are verified through the pre-shipment bench test. When you mount the 3PG4440P for the first time, it has already proven itself.