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Milwaukee M18 4-Gallon Water Supply Kit with SWITCH TANK
- $204.00
- Brands Milwaukee
- Product Code: 3019-21WS
- Availability: In Stock
Milwaukee M18 4-Gallon Water Supply Kit with SWITCH TANK – 3019-21WSProduct OverviewThe Milwaukee M18 4-Gallon Water Supply Kit with SWITCH TANK™ (3019-21WS) provides a convenient, battery-powered water delivery solution for professional concrete cutting, coring, and other applications requiring a controlled supply of clean water.Instead of relying on manual pumping, the M18 powered base delivers ..
Key Features of Milwaukee M18 4-Gallon Water Supply Kit
Milwaukee M18 4-Gallon Water Supply Kit with SWITCH TANK – 3019-21WS
Product Overview
The Milwaukee M18 4-Gallon Water Supply Kit with SWITCH TANK™ (3019-21WS) provides a convenient, battery-powered water delivery solution for professional concrete cutting, coring, and other applications requiring a controlled supply of clean water.
Instead of relying on manual pumping, the M18 powered base delivers instant, constant, and adjustable pressure up to 60 PSI. A five-mode pressure regulator allows the operator to adjust pressure from 20 to 60 PSI, providing better control for different applications.
The SWITCH TANK™ system separates the powered base from the interchangeable tank assembly. This allows additional compatible tanks to be added or exchanged without replacing the entire powered unit. The 4-gallon water supply tank incorporates a dual-diaphragm pump, wide-mouth opening, and debris-filtering strainer for practical jobsite operation.
Key Features
Interchangeable SWITCH TANK™ Design – Swap compatible tank assemblies onto one M18 powered base.
No Manual Pumping – Battery-powered operation supplies water without repeatedly pressurizing the tank by hand.
Up to 60 PSI – Provides sufficient pressure for controlled water delivery during demanding applications.
Five Pressure Settings – Adjustable from approximately 20 to 60 PSI for application-specific control.
Up to 40 Tanks per Charge – Milwaukee rates the current kit for up to 40 tanks of water delivery using the included M18 REDLITHIUM™ XC4.0 battery, depending on operating conditions and pressure setting.
Dual-Diaphragm Pump – Designed for increased durability and extended pump life.
10-Foot Water Hose – Provides useful reach between the backpack unit and connected equipment.
Quick-Connect Coupler – Makes connecting the water supply hose fast and convenient.
Wide Tank Opening – Simplifies filling and pouring.
Integrated Strainer – Helps prevent debris from entering the pump system.
Adjustable Premium Harness – Designed to make backpack transport more comfortable.
OSHA Table 1 Compliant for Applicable Concrete Cutting and Coring Applications – Milwaukee specifies the system for use in concrete cutting and coring applications where the applicable OSHA Table 1 requirements are met.
M18 Battery Platform – Part of Milwaukee's M18 cordless system.
Instant, Constant, Adjustable Water Pressure
The powered water supply eliminates the need for manual pumping while maintaining a controlled flow of water. Its five-position pressure regulator allows the operator to select the appropriate pressure for the task, with adjustment from 20 PSI to 60 PSI.
This makes the system particularly useful when a consistent water supply is needed for concrete cutting and coring operations.
SWITCH TANK™ Interchangeable System
The 3019-21WS consists of two primary components:
M18 Powered Base with SWITCH TANK™
4-Gallon Water Supply Tank Assembly with SWITCH TANK™ – 49-16-19WS
The powered base contains the motor, battery compartment, and REDLINK™ electronics. The interchangeable tank assembly contains the pump, hose, and quick-connect coupler. Because these components are separated, users can add additional compatible tank assemblies for different applications rather than purchasing another powered base.
The powered base is also compatible with the M18 4-Gallon Sprayer Tank Assembly with SWITCH TANK™ (49-16-19PS). Milwaukee specifically distinguishes water-supply and pesticide-sprayer tank assemblies, so the appropriate tank should always be used for the intended application.
Built for Concrete Cutting and Coring
The M18 4-Gallon Water Supply is designed to provide water where it is needed during concrete cutting and coring. Water delivery can help control dust generated during these operations, and Milwaukee identifies the system as OSHA Table 1 compliant when used for applicable concrete cutting and coring applications.
The included 10-foot hose and quick-connect system make it practical to position the backpack water supply away from the cutting or coring tool while maintaining a convenient connection.
Durable 4-Gallon Tank Design
The water tank is engineered for jobsite use and incorporates several features intended to simplify handling:
4-gallon capacity
Dual-diaphragm pump
Wide-mouth fill opening
Debris-filtering strainer
10-foot hose
Quick-connect coupler
Backpack frame with adjustable premium harness
Integrated carrying handle
The isolated tank, pump, and hose assembly also allows the tank assembly to be replaced or exchanged separately from the powered base.
What's Included
The 3019-21WS kit includes:
1 × M18 4-Gallon Water Supply Kit with SWITCH TANK™
1 × 4-Gallon Water Supply Tank Assembly with SWITCH TANK™
1 × M18 REDLITHIUM™ XC Extended Capacity Battery
1 × M18 & M12™ Multi-Voltage Charger
1 × Water Supply 10-foot Hose Assembly
Product Specifications
| Specification | Details |
|---|---|
| Brand | Milwaukee |
| Product Type | Battery-Powered Backpack Water Supply |
| Model / Catalog No. | 3019-21WS |
| Product Family | M18 SWITCH TANK™ |
| Tank Capacity | 4 gallons |
| Maximum Pressure | 60 PSI |
| Adjustable Pressure | 20–60 PSI |
| Pressure Settings | 5 modes |
| Pump Type | Dual diaphragm |
| Hose Length | 10 ft |
| Power Source | Milwaukee M18 REDLITHIUM™ battery |
| Included Battery | M18 REDLITHIUM™ XC4.0 |
| Rated Runtime | Up to 40 tanks per charge |
| Tank Assembly | 49-16-19WS |
| Powered Base | 3019-20 |
| Water Connection | Quick-connect coupler |
| Tank Features | Wide-mouth opening and strainer |
| Harness | Adjustable premium harness |
| Application | Clean-water supply for concrete cutting and coring |
| OSHA Table 1 | Compliant when used for applicable concrete cutting and coring applications |
| M18 System Compatibility | Yes |
Specifications above are based on Milwaukee's current 3019-21WS product information.
Recommended Applications
The Milwaukee M18 4-Gallon Water Supply Kit is well suited for:
Concrete cutting
Concrete coring
Wet cutting applications
Dust-control water delivery
Construction and demolition work
Professional concrete work
Jobsite water delivery where controlled pressure is required
Important Usage Note
This product is designed as a water supply system and should be used with clean water only. Milwaukee specifically states that the water supply tank and pesticide-sprayer tank systems are not interchangeable for accessories or intended applications.
Do not confuse the current 3019-21WS with the older 2820-21WS. Milwaukee lists 2820-21WS as discontinued, while 3019-21WS is the current M18 4-Gallon Water Supply Kit. The older model used a different tank assembly and battery configuration, so specifications for the two models should not be combined.
Why Choose the Milwaukee 3019-21WS?
The Milwaukee M18 4-Gallon Water Supply Kit with SWITCH TANK™ combines cordless convenience, adjustable pressure, and an interchangeable tank architecture in a backpack-style water supply. Its powered operation eliminates manual pumping, while the 4-gallon tank, 10-foot hose, quick-connect fitting, and adjustable harness make it practical for professional concrete cutting and coring applications.
For crews already using Milwaukee M18 equipment, the interchangeable SWITCH TANK™ platform also provides a way to expand water-supply capacity or add compatible tank assemblies without purchasing a separate powered base for every application.