Standard ASME Expansion Tanks
Specs, Drawings

Carbon Steel Expansion Tanks

  • EXPANSION TANK: A vessel that holds the extra volume of hot water in a system due to thermal expansion and allows it back into the system when it cools down.
  • Industry standard sizes are from 15 to 400 U.S. gallons.
  • Finished in shop primer. Galvanizing Option is Available.

Expansion Tank Specs and Drawing List

  • Sizes: 12″ to 36″ Outside Diameter
  • 125 and 150 Psig Working Pressure.
  • Material Pricing Subject To Change Based On Market Volatility
    Resulting From Implementation Of Section 232 Tariffs And Availability

Standard Expansion Tank Prices, Specs

GALLS SIZE WT# SQ.FT DRAWINGS PRICE US$
15 12" x 34" 60# 9.5
24 12" x 52" 86# 14
30 14" x 48" 93# 16
40 16" x 51" 103# 19
60 20" x 50" 130# 24
80 20" x 64" 158# 29
100 20" x 75" 221# 34
120 24" x 65" 235# 37
160 24" x 85" 297# 47
215 30" x 75" 373# 53
240 30" x 83" 414# 59
300 36" x 75" 503# 64
400 36" x 99" 637# 83

Standard Expansion Tank Drawings, Connections

CAP. GALLS DIA IN O.A. W. P. Psig DRAWINGS C D E F G H
15 12" 34" 150 1/2" 3/4" 3/4" 1/2" 1/2" -
24 12" 52" 150 1/2" 3/4" 3/4" 1/2" 1/2" -
30 14" 48" 150 1/2" 1/2" 1/2" 1/2" 1/2" 1 1/2"
40 16" 51" 150 1/2" 1/2" 1/2" 1/2" 1/2" 1 1/2"
60 20" 50" 150 1/2" 1/2" 1/2" 1/2" 1/2" 2"
80 20" 64" 150 1/2" 1/2" 1/2" 1/2" 1/2" 2"
100 20" 75" 150 1/2" 1/2" 1" 1" 1" 2"
120 24" 65" 150 1/2" - 1" 1" 1" 2"
160 24" 85" 150 1/2" - 1" 1" 1" 2"
215 30" 75" 150 3/4" - 1 1/2" 1" 1 1/2" 2"
240 30" 83" 150 3/4" - 1 1/2" 1" 1 1/2" 2"
300 36" 75" 125 3/4" - 2" 1" 2" 2"
400 36" 99" 125 3/4" - 2" 1" 2" 2"

SEE STANDARD VERTICAL
AND CUSTOM HORIZONTAL BUFFER TANKS

Rev. 021620211741