ASME Hot Water Buffer Tanks

HORIZONTAL AND VERTICAL HOT 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
GALLONS SIZE CONNECTIONS FLANGES PRICE
120 24" X 64" 2" FNPT connection
200 30" X 72" 3" FNPT connection
235 30" X 84" 3" FNPT connection
300 36" X 76" 3" FNPT connection
400 36" X 99" 3" FNPT connection
520 42" X 92" 6" 150# flanges
650 42" X 120" 6" 150# flanges

Vertical Hot Water Buffer Tanks

GALLS SIZE Dia x Lgth PRESSURE psig WT# DRAWING / PART# NET PRICE
40 16" x 50" 150 160
80 20" x 64" 150 234
115 24" x 64" 150 228
115 24" x 64" 150 228
115 24" x 64" 150 228
120 24" x 64" 125 300
125 24" x 57" 150 535
139 24" x 75" 150 355
189 30" x 66" 125 394
200 30" x 72" 125 585
200 30" x 72" 125 601
235 30" x 84" 150 456
235 30" x 84" 125 479
300 36" x 72" 150 787
325 36" x 81" 125 619
335 36" x 84" 150 708
400 36" x 99" 125 946
400 42" x 75" 125 918
472 42" x 87" 150 1125
500 42" x 83" 150 1184
530 42" x 97" 125 1062
534 42" x 98" 150 1160

Horizontal Hot Water Buffer Tanks

GALLS SIZE Dia x Lgth PRESSURE psig WT# DRAWING / PART# NET PRICE CURRENTLY IN STOCK*
40 16" x 50" 150 120 8
60 20" x 49" 150 160 In 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.