ASME Hot Water Buffer Tanks


View Specs and Drawings of in Stock and Custom Tanks

Standard in Stock and Custom Hot Water Buffer Tanks

  • A hot water buffer or volume tank improves system efficiency by adding extra thermal mass to the boiler water loop that circulates through a heat exchanger bundle.
  • It is sized by using the boiler’s performance capabilities with the desired firing time and maximum temperature drop chosen by its specifier to reduce boiler ignition cycles to four or less per hour.
  • They are necessary with today’s smaller, high efficiency low mass boilers and also function as an air eliminator.
  • As temperature stratification is not a major concern, they are usually built without internal baffles.
  • Please email or call us if you need assistance in sizing a hot water buffer tank.
  • Material Pricing Subject To Change Based On Market Volatility
    Resulting From Implementation Of Section 232 Tariffs And Availability
12024" X 64"2" FNPT connection
20030" X 72"3" FNPT connection
23530" X 84"3" FNPT connection
30036" X 76"3" FNPT connection
40036" X 99"3" FNPT connection
52042" X 92"6" 150# flanges
65042" X 120"6" 150# flanges

Vertical Hot Water Buffer Tanks

4016" x 50"150160
8020" x 64"150234
11524" x 64"150228
11524" x 64"150228
11524" x 64"150228
12024" x 64"125300
12524" x 57"150535
13924" x 75"150355
18930" x 66"125394
20030" x 72"125585
20030" x 72"125601
23530" x 84"150456
23530" x 84"125479
30036" x 72"150787
32536" x 81"125619
33536" x 84"150708
40036" x 99"125946
40042" x 75"125918
47242" x 87"1501125
50042" x 83"1501184
53042" x 97"1251062
53442" x 98"1501160

Horizontal Hot Water Buffer Tanks

4016" x 50"1501208
6020" x 49"150160In Production

Standard Chilled Water Tanks

  • Factory insulation is also offered at reasonable cost.
  • Hanson Tank Buffer Tank Sizes: Add 4″ for supports. (Please enquire for other sizes and connections)
  • The ¾” top connection is for an air vent valve, for example a Honeywell Braukmann #EA79A1004.
  • All sizes of Chilled Water Buffer Tanks are built to order in 4 weeks.

Custom Vertical Chilled Water Buffer Tanks

  • These tanks increase the capacity of a closed loop chilled water system and stabilize the return water temperature.
  • This results in fewer cycles of the compressor and better temperature control overall.
  • Chiller manufacturers recommend between three and ten gallons of total capacity in the system per nominal ton, depending on the accuracy of temperature control required.

Custom Horizontal Chilled Water Buffer Tanks

  • The size of tank is determined by deducting the capacity of the basic system from the desired capacity.
  • For example, a 80 ton system with 200 gallons in it would need a 600 gallon buffer tank for optimum (ten gallons per ton) efficiency.
  • Most chiller manufacturers recommend five gallons per nominal ton for a typical air conditioning system. In the above example, this would result in a 200 gallon buffer tank.