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Home Water Heaters Water Heater Accessories Expansion Tanks Expansion Tank 3/4" MNPT 4.5 gal

Expansion Tank 3/4" MNPT 4.5 gal

PART WILK XT-18
SUPPLIER Zurn® Wilkins
SUPPLIER PART # XT-18
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About this item

Zurn® Wilkins Thermal Expansion Tank, Series: XT Series, 4.5 gal Tank Volume, Acceptance Volume: 2.4 gal, 150 psi, ASME Yes/No: No, 11 in Dia, 13-1/2 in Height, Carbon Steel, 40 psi Pre-Pressure Rating, 200 deg F Maximum Temperature, MNPT, 3/4 in, Epoxy Coated

The 4.8 gallon XT-18 Thermal Expansion Tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications. As the system pressure increases, water enters the polypropylene-lined water chamber of the tank, expanding a diaphragm into a pre-charged air chamber to keep the system pressure below the relief valve setting. Materials include a carbon steel shell with an epoxy finished coating, and corrosion-resistant stainless steel connection with a polypropylene liner and Butyl rubber diaphragm.

ANSI B1.20.1|FDA Approved|IAPMO Listed|NSF/ANSI 61/372|UPC Listed
Acceptance Volume 2.4 gal
ASME Yes/No No
Connection Size 3/4 in
Connection Type MNPT
Diameter 11 in
Finish Epoxy Coated
Height 13-1/2 in
Material Carbon Steel
Maximum Temperature 200 deg F
Pre-Pressure Rating 40 psi
Pressure Rating 150 psi
Series XT Series
Tank Volume 4.5 gal
Brand Zurn® Wilkins
Country of Origin TW
Warranty 5 Years
  • Diaphragm style tank for residential applications
  • Steel shell protected with polypropylene liner
  • Pre-charge is field adjustable