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

wdt_ID GALLS SIZE WT# SQ.FT DRAWINGS PRICE US$
1 15 12" x 34" 60# 10
2 24 12" x 52" 86# 14
3 30 14" x 48" 93# 16
4 40 16" x 51" 103# 19
5 60 20" x 50" 130# 24
6 80 20" x 64" 158# 29
7 100 20" x 75" 221# 34
8 120 24" x 65" 235# 37
9 160 24" x 85" 297# 47
10 215 30" x 75" 373# 53

Standard Expansion Tank Drawings, Connections

wdt_ID CAP. GALLS DIA IN O.A. W. P. Psig DRAWINGS C D E F G H
1 15 12" 34" 150 1/2" 3/4" 3/4" 1/2" 1/2" -
2 24 12" 52" 150 1/2" 3/4" 3/4" 1/2" 1/2" -
3 30 14" 48" 150 1/2" 1/2" 1/2" 1/2" 1/2" 1 1/2"
4 40 16" 51" 150 1/2" 1/2" 1/2" 1/2" 1/2" 1 1/2"
5 60 20" 50" 150 1/2" 1/2" 1/2" 1/2" 1/2" 2"
6 80 20" 64" 150 1/2" 1/2" 1/2" 1/2" 1/2" 2"
7 100 20" 75" 150 1/2" 1/2" 1" 1" 1" 2"
8 120 24" 65" 150 1/2" - 1" 1" 1" 2"
9 160 24" 85" 150 1/2" - 1" 1" 1" 2"
10 215 30" 75" 150 3/4" - 1 1/2" 1" 1 1/2" 2"

SEE STANDARD VERTICAL
AND CUSTOM HORIZONTAL BUFFER TANKS

Rev. 021620211741