MY CART
0 Item - $0.00

Water Heater Expansion Tanks

An expansion tank or expansion vessel is a small tank used to protect closed water heating systems and domestic hot water systems from excessive pressure. Visit FaucetDepot.com for these needs and more!!

View All Expansion Tanks

Amtrol 140N43 THERM-X-TROL ST-5 Expansion Tank
  • Model No: AMTROLST-5
  • Finish:
  • Stock: Backordered
  • Retail Price: $71.94
  • Our Price: $71.94
Amtrol ST-12 THERM-X-TROL ST-12 Expansion Tank
  • Model No: AMTST-12
  • Finish:
  • Stock: Backordered
  • Retail Price: $160.00
  • Our Price: $119.74
Amtrol T-12 THERM-X-SPAN Expansion Tank, 4.4 Gallon
  • Model No: AMTT-12
  • Finish: None
  • Stock: Available
  • Retail Price: $82.10
  • Our Price: $55.14
Amtrol T-5 THERM-X-SPAN Expansion Tank, 2.0 Gallon
  • Model No: AMTT-5
  • Finish: None
  • Stock: Available
  • Retail Price: $64.60
  • Our Price: $48.89
Watts DETA-12 ASME Potable Water Expansion Tank (0212027)
  • Model No: WTDETA12
  • Finish: None
  • Stock: Backordered
  • Retail Price: $3,348.00
  • Our Price: $2,202.73

Save 10% with Code:
Watts10
Watts PLT-12 Potable Water Expansion Tank - 4.5 Gal (0067371)
  • Model No: WTPLT-12
  • Finish: None
  • Stock: Backordered
  • Retail Price: $217.50
  • Our Price: $169.19

Save 10% with Code:
Watts10
Watts PLT-20 Potable Water Expansion Tank - 8.5 Gal. (0067372)
  • Model No: WTPLT-20
  • Finish: None
  • Stock: Available
  • Retail Price: $428.50
  • Our Price: $254.42

Save 10% with Code:
Watts10
Watts PLT-35 Potable Water Expansion Tank - 14 Gal. (0067373)
  • Model No: WTPLT-35
  • Finish: None
  • Stock: Backordered
  • Retail Price: $527.50
  • Our Price: $398.47

Save 10% with Code:
Watts10
Watts PLT-5 Potable Water Expansion Tank - 2.1 Gal. (0067370)
  • Model No: WTPLT5
  • Finish: None
  • Stock: Backordered
  • Retail Price: $154.50
  • Our Price: $105.84

Save 10% with Code:
Watts10
Join Our Professional Site for Deeper Discounts with Access to Inventory at 21 Warehouses! Click for More Info