These tanks increase the capacity of a 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. 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.

HANSON TANK manufactures two styles of 125# ASME chilled water tanks. Both vertical, they have either a vertical internal baffle with connections on the sides of the tank, or a dip tube on one of two connections on the top head. Please refer to the attached drawings for details. Chilled water tank standard connections are from 2" to 3" FNPT and 4" to 8" 150# Flanges. Grooved pipe stubs are available for all sizes instead. Tanks 42" diameter and above have a 12" x 16" elliptical manway installed in the shell.

Factory insulation is also offered at reasonable cost. Hanson Tank Buffer Tank Sizes: Add 4" for supports. (Please enquire for other sizes and connections)
All sizes of Chilled Water Buffer Tanks are built to order in 3 to 4 weeks

Click Hot Water Buffer Tanks to see typical sizes and prices of Hot Water Buffer Tanks.

GALLONS

SIZE

CONNECTIONS
FLANGES

DRAWING

PRICE

20" X  64"0

2".0 FNPT connection

$ 2123

120

24" X  64"0

3".0 flanges                 

WL-616-B

$ 2635

650

42" X  120"

  6".0 150# flanges        

-

$ 5724

1200

54" X  134"

   6".0 150# flanges         

-

$ 8943

GALLONS

SIZE
Dia x Lgth

PRESSURE
psig

WT#

DRAWING / PART#

INQUIRE PRICE

30

18" x 31"

150

101

100

24" x 57"

150

351

120

24" x 64"

150

326

120

24" x 64"

150

350

120

24" x 64"

150

368

120

24" x 64"

150

400

120

24" x 67"

150

381

130

30" x 49"

150

327

155

30" x 57"

50

423

160

30" x 59"

150

470

160

30" x 59"

150

462

189

30" x 69"

150

525

200

30" x 72"

125

534

200

30" x 72"

125

523

200

30" x 72"

150

438

240

30" x 84"

125

610

243

30" x 86"

150

529

250

36" x 64"

125

566

250

36" x 64"

125

542

260

30" x 90"

150

541

300

36" x 76"

150

686

300

36" x 76"

150

667

305

36" x 75"

125

615

306

36" x 77"

125

709

340

42" x 61"

125

703

350

36" x 85"

150

738

350

36" x 85"

150

738

Standard styles can be modified at nominal cost. The part# will change. If the capacity or working pressure you need is not listed, contact us for a prompt quotation. As well as ASME, we can meet other domestic and international codes such as ABS, USCG, Canadian, Lloyds and DNV.