Therm-X-Trol® 10.3 gal Water Heater Expansion Tank

Part #AST25V  |  Item #468093  |  Manufacturer Part #143N164

$ 291.92 EACH
(Pricing is for 10.3 gal)


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Product Details

  • For use in closed, potable hot water systems to control pressure buildup
  • Accepts expanded water as temperature rises to prevent relief valve discharge and system damage
  • Stand models designed for large residential and light commercial applications
  • Multiple units can be installed to accommodate larger systems
  • Antimicrobial polypropylene w/anti-legionella protection liner
  • Lead-Free
  • 1-Year Limited Warranty.

Lead Law Compliant



ANSI Specifications: ANSI 61

Application: Potable Water Systems

Capacity: 10.3 gal

Coating: Urethane

Collection: Therm-X-Trol®

Color Finish: Tan

Color Finish Category: Neutrals

Diameter: 15 in

End Connection 1: NPTF

End Connection Location: Bottom

End Connections: NPTF

FM Approved: No

Fitting Size 1: 3/4 in

Fitting Size 2: 3/4 in

Fitting Sizes: 3/4 in

Height: 19 in

IAPMO Listed: Yes

Lead Law Compliant: Yes

Material: Steel

Material Type: Butyl

Maximum Pressure: 150 psi

Maximum Temperature: 200

NSF Certified: Yes

NSF Specifications: NSF 61

Product Type: Stand

Supply Pipe Connection: 3/4 in

UL Listed: No

Water Heater Type: Commercial

Weight: 23