Skip to Main Content

200109 - Miller Coolmate 3 Replacement Coolant Reservoir

Packaging: 1 PER EA
$359.81/EA $235.26/1 PER EA only $235.26/EASave 35%

Usually ships within 3-5 business days

OVERVIEW

Restore Your Cooling System with the Miller 200109 Tank

The Miller 200109 Coolant Tank is a critical replacement component designed specifically for Miller Coolmate series water coolers, most notably the Coolmate 3. In high-amperage TIG and MIG welding applications, a reliable water-cooling system is essential to prevent torch overheating and equipment failure. The coolant tank serves as the central reservoir for your system, holding the specialized low-conductivity coolant that circulates through your lines and torch head. Over time, industrial environments can take a toll on plastic components, leading to cracks, leaks, or contamination that jeopardizes the efficiency of your entire setup.

At Josef Gas, we understand that downtime is costly. That is why we stock genuine OEM parts like this Miller reservoir to help you get your equipment back up and running quickly. This tank is manufactured from high-density, durable plastic that is resistant to the chemicals found in welding coolants as well as the heat generated during operation. Its molded design ensures a perfect fit within the Coolmate chassis, aligning correctly with intake and return lines for a leak-free installation. Unlike generic aftermarket tanks that may require modification, this genuine Miller part drops right in, saving you time and frustration during maintenance.

Regular inspection of your cooling system is a key part of preventative maintenance. If you notice coolant pooling under your machine or find that you are frequently topping up the fluid levels without an obvious hose leak, the tank itself may be compromised. Hairline cracks can develop due to age, vibration, or accidental impact. Replacing a damaged tank with the Miller 200109 ensures that your coolant remains contained and clean, protecting your expensive water-cooled torches and pumps from damage caused by cavitation or overheating. Trust Josef Gas for the quality parts you need to maintain your professional welding environment.

Additional Information
Packaging Description:1 Per Ea
Compatible Models:Coolmate 3, Coolmate 3.5
Material:High-Density Polyethylene
Part Type:Coolant Reservoir
Capacity:3 Gallon (Approximate)
----- new values below ----
Compatible Models:Coolmate 3, Coolmate 3.5
Material:High-Density Polyethylene
Part Type:Coolant Reservoir
Capacity:3 Gallon (Approximate)
brand:miller
packaging-description:1-per-ea

INCLUDED

  • 1 x Miller 200109 Coolant Tank

APPLICATIONS

  • Replacement of cracked or leaking coolant reservoirs in Miller Coolmate 3 systems.
  • Restoring proper coolant storage capacity for water-cooled TIG and MIG setups.
  • Preventative maintenance for aging welding water coolers.
  • Repairing cooling systems to prevent torch overheating and failure.

FAQ

The Miller 200109 tank is primarily designed for the Miller Coolmate 3 and Coolmate 3.5 cooling systems. It is a direct OEM replacement for the original reservoir found in these units.

Typically, the Miller 200109 is sold as the bare tank only. You may need to reuse your existing cap or purchase a replacement cap separately if yours is lost or damaged.

The tank is manufactured from high-density polyethylene or a similar durable molded plastic, designed to resist the chemicals in welding coolant and withstand industrial environments.

Signs that you need a replacement include visible cracks in the plastic, coolant pooling under the machine, discoloration that makes checking levels impossible, or brittleness due to age and heat exposure.

No, you should never use automotive antifreeze in welding systems as it can clog pumps and conduct electricity. Always use coolant specifically designed for welding applications, such as Miller Low Conductivity Coolant.

Yes, this is a genuine Miller Electric OEM part (SKU 200109), ensuring perfect fitment and compatibility with your Miller equipment.

The tank is designed to hold approximately 3 gallons (11.4 liters) of coolant, matching the standard capacity of the Coolmate 3 system.