Therm-X-Trol® 20 gal. Water Heater Expansion Tank

Part #AST42V  |  Item #1350315  |  Manufacturer Part #144N177

$ 426.40 EACH


20 gal

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Product Details

  • For Use in Closed, Potable Hot Water Systems to Control Pressure Build-up.
  • Strongest Tank Design Featuring Deep Drawn Steel and Multi-Dome Construction.
  • Thickest Diaphragm - Heavy Duty Butyl.
  • Antimicrobial Liner Neutralizes Bacteria on Contact.
  • Patented Turbulator™ Water Circulation Device.
  • Designed for Large Residential and Light Commercial (non-ASME) Applications.
  • 1-Year Limited Warranty.

Lead Law Compliant


ANSI Specifications: ANSI 61

Application: [Residential, Light Commercial]

Capacity: 20 gal

Collection: Therm-X-Trol®

Color Finish: Tan

Diameter: 15 in

End Connection 1: IPS

End Connection Location: Bottom

End Connections: IPS

Fitting Size 1: 3/4 in

Fitting Sizes: 3/4 in

Height: 32 in

Lead Law Compliant: Yes

Material: Steel

Maximum Pressure: 150 psi

Maximum Temperature: 200

NSF Certified: Yes

NSF Specifications: NSF 61

Weight: 33