Spraying Systems 1/4" Washjet MEG 40° 4000psi

2025-12-17T10:34:21-08:00

Price: 17.80

Description Specs & Engineering Applications

Wide Coverage & Gentle Washing | Siding - Windows - Vehicles

The Spraying Systems WashJet® 40° MEG Nozzle is the professional's choice for safe, high-coverage washing. It produces a wide, "soft" fan pattern that maximizes dwell time on the surface while minimizing impact pressure, making it safe for delicate substrates.

Unlike standard tips that "mist" at the edges of a wide fan, WashJet nozzles utilize Even-Edge technology to ensure the water droplets remain large and cohesive across the entire 40° spread. This is critical for rinsing siding or washing vehicles, as it minimizes overspray and ensures every drop of water contributes to the clean.

✅ The WashJet® Advantage: 404 Series Steel

WashJet MEG nozzles are constructed from premium Hardened 404 Series Stainless Steel. This alloy is engineered to withstand the dual threat of high-pressure erosion and chemical corrosion from softwash mixes (SH). This ensures your wide rinsing pattern remains smooth and consistent long after standard stainless tips have washed out.

⚠️ Precision Sizing Required

Selecting the wrong orifice size is the #1 cause of decreased performance.

Too Small: Your unloader valve will bypass water to limit pressure. This reduces the flow rate at the tip, killing your rinsing speed.

Too Big: System pressure drops drastically. While desirable for "Soft Wash" rinsing, going too big can prevent your chemical injector from drawing soap.

Use the Smart Calculator below to find your exact match.

📐 Nozzle Size Calculator

Enter your machine's specs to generate the recommended orifice size.

Flow (GPM)
2.0 GPM

2.5 GPM

3.0 GPM

3.5 GPM

4.0 GPM

4.5 GPM

5.0 GPM

5.5 GPM

6.0 GPM

8.0 GPM

10.0 GPM

12.0 GPM

Pressure (PSI)
2000 PSI

2500 PSI

3000 PSI

3500 PSI

4000 PSI

5000 PSI

Exact Calculation:
# 4.00
Recommended Orifice Size: # 4.0

Gas HP
14.5 HP

Elec HP
11.0 HP

Hyd HP
9.3 HP

Disclaimer: This calculator is a guide only. Always verify your equipment's specific requirements before installing high-pressure components.

Technical Specifications

Model | Spraying Systems WashJet® MEG
Thread Type | 1/4" NPT Male
Material | Hardened 404 Stainless Steel
Rated Pressure | 4,000 PSI
Spray Angle | 40° Washing Fan

Spray Angle Color Guide

Note: WashJet MEG nozzles are unpainted stainless steel. The list below references the matching Quick Connect industry standard colors.

🔴 0° (Red): Cutting / Hydro-Excavation / J-Rod High Reach.

🟡 15° (Yellow): Chiseling / Paint Stripping / Heavy Grease.

🟢 25° (Green): Flushing / Surface Cleaners / J-Rod Close Application.

⚪ 40° (White): Washing / Windows / Siding.

Professional 40° Use Cases:

Siding & Windows: The wide fan spreads the impact over a larger area, making it the safest choice for washing vinyl siding, glass, and softer wood surfaces.

Vehicle Washing: Ideal for fleet washing and detailing. The 40° pattern covers large panels quickly and gently rinses away soap without damaging decals or paint.

Final Rinse: Excellent for "chasing" dirty water off a driveway or parking lot after surface cleaning.

💧 Softwash & J-Rod Sizing Guide

Because WashJet nozzles are available in the large Orifice Sizes required for J-Rods and nozzle holders, they serve dual purposes for Softwash and high pressure applications.

40° Tips can be used in J-Rods and other softwash nozzle holders and are a popular choice of some contractors who prefer the wider spray pattern than the typical 25° fan that is standard in most pre-built kits.

Your Machine

Standard Rinse Tip
(High Pressure)

Standard Soap Tip
(Low Pressure)

2 - 3 GPM | Size # 10.0 | Size # 30.0
3.5 - 4.5 GPM | Size # 10.0 | Size # 40.0
5 - 6.5 GPM | Size # 15.0 | Size # 40.0
7 - 8.5 GPM | Size # 20.0 | Size # 60.0

Note: Installing a #30 - #60 nozzle on a standard machine will drop pressure drastically, automatically engaging your downstream chemical injector.