20 Gallon Pressurized RO Water Storage Tank | Flexwave Commercial RO Tanks

In Stock for Immediate Shipment.
More Information

Flexwave Composite Pressurized RO Water Storage Tank for Commercial RO System
20 Gallon RO Water Storage Tank for Commercial RO Systems

Flexwave Composite Pressurized RO Tank

Flexwave RO 20 Gallon Water Storage Tanks use a butyl rubber diaphragm to store and deliver reverse osmosis water using air pressure within the tank. 

Flexwave light commercial and residential RO composite storage vessels offer high strength, precision molded internal liner reinforced w/ continuous strand fiberglass and sealed w/ high grade epoxy resin. Flexwave RO tanks are designed with oversized copolymer polypropylene lower water chamber with 100% butyl rubber diaphragm. Lightweight, non-corrosive construction for maximum life and maximum flexibility. 

Flexwave composite tanks flaunt a seamless polypropylene liner that eliminates top and bottom leak issues, as well as stainless steel reinforcing rings that back up all threaded openings. Injection molded domes increase shape consistency and strength while wetted surfaces made of high quality polypropylene add zero taste or odor. 

Flexwave FWRO20 can be used as a direct replacement for ROMATE20, which we have discontinued.

FLexwave RO Stroage Tanks are Quality Tested and Certified:

  • Made in USA
  • Certified to WQA-NSF/ANSI 61 and WQA-NSF/ANSI 372
  • All Flexwave tanks are 100% pressure tested and carry a 5 year limited warranty.

FlexWave RO Storage Tanks are Made in USA and Quality Certified


RO Tank Specifications

Model: FWRO20
Brand:  Flexwave
Tank Volume: 22 Gallons (83 Liters)
Draw Down:
(@ 10 psi pre-charge)
13.6 gallons @ 50 psi supply.
14.7 gallons @  60 psi supply.
System Connection: 1" MNPT
Tank Dimensions:

16.5" Dia. x 34"H
(62.5 cm x128.7 cm)
Tank Weight (empty): 26 lbs (11.8 kg)
Max. Working Pressure: 125 psi
Max. Working Temperature: 120°F (48.8°C)
Pre-Charge (adjustable): 20 psi

Copolymer polypropylene tank reinforced with fiberglass and sealed with epoxy resin.
Water Chamber: 100% butyl rubber diaphragm w/ copolymer polypropylene lower chamber
Connection: Male socket, rigid sch. 80 PVC
Air Valve: Brass with rubber o-ring seal
Replaces Models:

Compatible With:

Everpure DEV3115-70
Everpure DEV311570
Everpure EV3115-70
Everpure EV311570 

Water Filter Treatment Components Specifications

Additional Features & Benefits of Flexwave Storage Tanks

CAD-2 Water Chamber:

  • Used in all pressurized captive air composite and steel tanks
  • 100% Butyl rubber diaphragm
  • Cross-linked polypropylene lower chamber
  • Industry best sealing system, patented clinch ring, eliminates separation
  • Adds zero taste or odor
  • Virtually eliminates condensation
  • Oversized to reduce wear for extended life with high volume storage
Flexwave RO Tank Water Chamber

 Composite Tanks:

  • Seamless polypropylene liners eliminate top and bottom shell leak issues
  • Stainless steel reinforcing ring backs up all threaded openings
  • Injection molded domes increase shape consistency and strength
  • Wetted surfaces made of high quality polypropylene to add zero taste or odor 
  • Continuous wound fiberglass and high temperature epoxy resin external shell eliminates corrosion
  • Precision molded rigid PVC bottom fittings
 Flexwave Composite Commercial RO Water Storage Diaphragm Tanks

 Durable Injection Molded Plastic Base:

  • Ribbed for exceptional strength and durability
  • Molded bolt holes for seismic and skid mount applications
  • Eliminates corrosion
  • EZ connection makes storage and contact tank installation quick & EZ
 Flexwave Commercial RO Storage Tanks Pressurized Bladder Tanks

Applications for Pressurized Water Storage Tanks