Watts 2.1 Gal. Potable Water Heater Storage Tank, 3/4 in. Male Connection, Tank Volume

Item # 10-30401 | Watts Part # PLT-5 | UPC Code 098268095739 | UNSPSC Code 24111810 | Catalog Page #531
Add to Favorites List Add to Customized Product Offering Remove From Customized Product Offering Add To Bin Labels Added to Bin Labels. Click icon to print Bin Labels. Add To Custom Catalog Added To Custom Catalog. Click icon to print Custom Catalog. Email Print

Related Items

Product Overview

This potable water expansion tank is used on gas, oil or electric, direct-fired, residential water heater and hot water storage tank applications to absorb the increased volume of water created by thermal expansion. It also maintains balanced pressure throughout the water supply system by keeping system pressure below the T and P relief valve setting. This field-adjustable steel tank is air pre-charged at 20 psi, volume 2.1 Gal. designed with an FDA-approved polypropylene liner and Butyl rubber diaphragm, copper-lined steel and 3/4 in. male inlet connection. An expansion membrane prevents air-to-water contact in the tank ensuring a long system life. IAPMO listed and ANSI/NSF 61 certified. The maximum pressure is 150 psi (10 BAR).

  • Prevents over-pressure caused by thermal expansion
  • Air pre-charge at 20 psi
  • 3/4 in. male connection
  • Butyl rubber diaphragm
  • 2.1 Gal. volume
  • Absorbs the increased volume of water created by thermal expansion
  • Prevents air to water contact
  • Helps ensure long system life
  • 150 psi max pressure
  • Maintains balanced pressure

Proposition 65 Information

Prop65 Warning Icon WARNING: CALIFORNIA PROP 65 WARNING: Thisproduct can expose you to chemicals includingcarbon disulfide, which is known to the Stateof California to cause birth defects or otherreproductive harm. For more informationgo to www.P65Warnings.ca.gov.


Container Size (gallons)
Off White
Finish Family
Maximum Capacity (gallons)
Nominal Tank Capacity (gallons)
Pack Size
Product Depth (in.)
Product Height (in.)
Product Weight (lb.)
Product Width (in.)
Tank Capacity
2.1 Gal.