Amtrol® EXTROL® 118-78 SX Series Vertical Floor-Standing Boiler System Expansion TankAmtrol® EXTROL® 118-78 SX Series Vertical Floor-Standing Boiler System Expansion Tank
Amtrol® EXTROL® 118-78 SX Series Vertical Floor-Standing Boiler System Expansion Tank
AmtrolSKU: 36279

Amtrol® EXTROL® 118-78 SX Series Vertical Floor-Standing Boiler System Expansion Tank

$299.84
In stock (34)

Amtrol® EXTROL® SX Series vertical expansion tank designed for boiler systems. 20-gallon capacity with 11.3-gallon acceptance, rated to 100 psi and 240°F. Features heavy-duty butyl/EPDM diaphragm, steel shell with urethane topcoat for durability. Vertical floor-standing design (15" diameter, 32" height) fits standard installation spaces. Domestic model built to manage system pressure and prevent damage from thermal expansion in heating applications.

Shipping policy

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

More Details

Product overview
  • These non-ASME tanks are available in sizes up to 86 gallons and can be used with high output boilers up to 1,500,000 BTU's
  • Accepts expanded water as system temperature rises to reduce pressure build-up
  • 12 psig factory precharged
  • 1 in NPTF steel system connection
  • 1-13/16 in stand to connection
  • Projection welded air valve
Specifications
Manufacturer Part Number 118-78
UPC 642031119896
Overall Dimensions 15in dia x 32in h
Material n/a
Domestic or Import Domestic
End Style n/a
Type Vertical Floor-Standing
ADA Compliance n/a
Warning Professional installation required
Standards and Approvals ISO 9001:2008
Resources
Delivery & Returns

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

Upcoming holiday closures: July 3, 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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