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Reliance Water Systems 20 gal Pre-Charged Horizontal Well Tank

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Lays flat to fit tight crawl spaces while its epoxy-lined steel tank cuts down on pump cycling.
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This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $194.99, average $229.99
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About Product Overview

When a well pump has to fight a low-clearance space, a horizontal tank solves the problem a standard vertical tank can't. The Reliance PMDH-20 lays flat, tucking under floor joists or into crawl spaces where headroom is tight, while still giving your system the pre-charged air cushion it needs to cut down on pump cycling.

Built from steel with an epoxy lining, this 20-gallon tank resists corrosion from the inside out, which matters since well water sits in it around the clock. The 1-inch MPT male connection makes hookup straightforward, and the pre-charge means less start-stop wear on your pump motor, which can extend its service life. Rated to handle water up to 120°F, it's suited for typical residential well setups. Anyone replacing an old tank in a basement, crawl space, or utility closet with limited overhead clearance will find this a practical fit.

  • Capacity: 20 gallons
  • Connection: 1-inch MPT (male)
  • Construction: Steel tank with epoxy lining
  • Orientation: Horizontal, pre-charged
  • Max temperature: 120°F
  • Dimensions: 27.125" W x 15.375" D x 17.375" H

The Details Specifications

Special Handling Special handling and shipping requirements apply. UN #UN1002.
Non-Returnable This product cannot be returned. All sales final.
Brand Reliance Water Systems
UPC 091194013587
Case Pack Quantity 18 per case
Retail Unit Quantity 1
Dimensions (L × W × H) 16 × 16 × 31
Weight 30 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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