Product Series Description

ELBI DWT Series of Hydro-pneumatic water well tanks represent the latest development in well tank technology and comes with a true deep-drawn design with one single body weld which gives it reliability, lightness and efficiency.

There are no inner domes to limit the diaphragms expansion, therefore, the maximum drawdown can be obtained in all conditions. our tanks feature a food gade Polypropylene liner . The Food Grade Polypropylene liner is tested against ASTM standards for perfect adhesion. All Units are NSF61 and IAPMO certified.


What’s New in the DWT Series Tanks

  • Epoxy paint finish No UV Ray deterioration (chalking) – Tough Finish
  • NSF61 & IAPMO Certified
  • Improved diaphragm retaining ring
  • Heavy Gauge Metal
  • Galvanized water fittings & Elbows

Features & Benefits

Diaphragm type designSimple and reliable design.
Wide range of sizes availableFrom 2 to 132 gallons; we offer 10 different sizes to perfectly suit your application.
Heavy duty Butyl diaphragmIn house diaphragm manufacturing, using injection molding equipment, to ensure total control of this vital component. Proprietary food quality Butyl compound will not release taste or odor to water which makes it safe for alimentary applications. Solid construction, all diaphragms are QC inspected prior to assembly.
Exclusive epoxy painted corrosion proofing exteriorProvides a high level of resistance against the corrosive action of water. *Completely phenol-free coating which satisfies government requirements for products designed to contain liquids for human consumption. Resistant to temperatures of up to 200°F.
Protection of water inletPlastic insert keeps the diaphragm safe, prevents well water debris from entering the tank.
Protected air valveRecessed position prevents demage of the precharge air valve during shipping and handling. The plastic cap prevents accidental tampering.
Wide open steel baseAllows for an easy installation, does not limit tank position as in the case of closed based. Perfect for "T" installation in multiple tank set-up. The open style base provides better aeration, thus reducing condensation and premature rusting.*
Compact, light weight designSpace efficient design, replaces standard galvanized tanks up to three times as large; easy to handle and install.

* When installed in normal environmental conditions. By normal environmental conditions its is meant environments which are free of acids, scale or chemical deposits or other factors known to affect paints, coatings and metals.

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