Amtrol® Therm-X-Trol® 143N273 ST Series Vertical Free Standing Thermal Expansion TankAmtrol® Therm-X-Trol® 143N273 ST Series Vertical Free Standing Thermal Expansion Tank
Amtrol® Therm-X-Trol® 143N273 ST Series Vertical Free Standing Thermal Expansion Tank
AmtrolSKU: 36302

Amtrol® Therm-X-Trol® 143N273 ST Series Vertical Free Standing Thermal Expansion Tank

$357.51
In stock (9)

Reliable thermal expansion control for your hydronic heating system. The Amtrol Therm-X-Trol 143N273 handles system pressure spikes with a 14-gallon capacity and 11.3-gallon acceptance volume. Rated for 150 psig and 200°F maximum temperature, this vertical free-standing tank features a durable drawn steel construction with urethane topcoat protection. 50 psig pre-pressure rating and 3/4" FNPT connection ensure straightforward installation in residential and light commercial applications. Domestic-made quality you can count on.

Shipping policy

Orders placed by 2:00pm EST will ship same day, except on holidays.

More Details

Product overview
  • Antimicrobial liner neutralizes bacteria on contact
  • Patented Turbulator™ water circulation device
  • InSight™ indicator cap tank service alert
  • Strongest tank design featuring deep drawn steel and multi-dome construction
  • Thickest diaphragm - heavy duty butyl
  • Projection welded air stem to help eliminate leaks
  • Exclusive ST-1 for tankless water heaters
Specifications
Manufacturer Part Number 143N273
UPC 642031395696
Overall Dimensions 4-3/32 in L x 3-3/16 in W x 4-29/32 in H
Material n/a
Domestic or Import Domestic
End Style n/a
Type Vertical Free Standing
ADA Compliance n/a
Warning Professional installation required
Standards and Approvals IAPMO R and T Low Lead | NSF/ANSI 61 | PHCC Association
Resources
Delivery & Returns

Orders will ship same day if received by 2pm EST.

Upcoming holiday closures: Monday September 7, 2026

All returns are inspected on receipt; credit is issued after condition is confirmed. Credit is issued only for items returned in original, saleable condition after inspection.

FINAL SALE ITEMS ARE NOT ELIGIBLE FOR RETURNS OR EXCHANGES.

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