Mueller Model R Open Tanks

Mueller Model R open type bulk milk cooler. Reliable and low-cost milk cooling for the dairy farmer. This milk tank is available with a capacity of 500 to 1,500 liters milk.


  • Available from 500 to 1,500 liters milk cooling capacity
  • Inner and outer tanks are made of durable AISI 304 Stainless Steel
  • The lid is easy to open and has a filling hole of Ø 200 mm with inlet cover
  • Reliable operation, even in high ambient temperatures
  • Supplied with high-performance condensing unit
  • Suitable for 2 and 4 milkings
  • Simple operation and manual tank cleaning 

Specifications and Sizing

Model R-500 R-1000 R-1500
Nominal Volume in Liters 500 1,000 1,500
Gross Capacity in Liters 550 1,100 1,450
Tank length in mm 1,510 1,750 1,750
Tank width in mm 1,282 1,428 1,482
Height with closed cover* in mm 1,110 1,300 1,565
Height with open cover in mm 1,240 2,005 2,270
Tank weight (without condensing unit) in kg 140 215 230
Electrical Data (maximum connected loads)
Condesing unit in kW 1.68 2.6 4.3
Agistator Motor in W 70 70 70
Specifications condensing units*
Compressor Copeland Copeland Copeland
Cooling capacity (min) in kW 3.8 6.15 9.7
Compressor type Recip. 230V Recip. 230V/400V** Recip. 400V
Length in mm 950 1,125 1,540
Height in mm 690 765 760
Width in mm 350 355 450
Weight in kg 80 90 120

*Based on two milkings and cooling performance exceeding requirements of ISO 5708-2BII.

**Mueller recommends to use tri-phase (400V) reciprocating compressor for the R-1000. However, single phase (230V) scroll compressor is optionally available with this model.

Note: The height of the tank is given with legs adjusted at min. height. 

Results in an ambient temperature of +38°C—operating guaranteed at 53°C.

In these tanks the milk temperature, initially at 4°C, does not exceed 6,7°C after 12 hours, in an ambient temperature of 38°C.

Our Dairy Farm Partners

We are proud to partner with these leaders in the dairy farming industry. From legacy farms that have thrived through multiple generations to solar cooling in Africa that is providing young children their first taste of cold milk, our equipment is impacting lives around the world.