Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

LOW PRICES and FAST SHIPPING ONLINE SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

AquaSky Water ROT-4 Tanks

 

Aquasky ® ROT-4 Tank is the tank number for a standard tank used on many generic and brand name reverse osmosis systems.   Select one of the tanks below to replace your Aquasky ROT-4 reverse osmosis drinking wate system.  4 gallon tank.  See chart below for holding capacity. 

 

  1. Aquasky ROT-4 and PAE Style Compatible Reverse Osmosis Water Accumulator Bladder Tank
    Aquasky ® ROT-4 and PAE Style Compatible Reverse Osmosis Water Accumulator Tank
    Aquasky ® ROT-4 and PAE Compatible Reverse Osmosis Water Accumulator Tanks - 4 Gallon - We frequently have spare tanks from systems that were sold with plastic tanks instead of the metal tank. Order this tank to replace your Aquasky or PAE RO system's tank. (14" high X 11" diameter) Connection Size: 1/4" MNPT - Ball Shut Off Valve Optional. Or choose the option for the Stainless Steel tank for the finest tank we have ever seen. It even has a patented design to virtually eliminate the need to monitor the tank air pressure. The optional Stainless Steel RO tank is truly premium quality construction. We love this tank!!
    Learn More
    $79.99 Special Price $43.99 As low as $35.99
  2. Amtrol ® RO 14 Replacement Water Accumulator Tank
    Amtrol ® RO 14 Replacement Water Accumulator Tank

    Amtrol ® RO 14 RO Replacement Tank - If you order the Amtrol RO 14 you will receive the PAE-1070 14 gallon tank. - Amtrol RO Mate 14 Replacement Tank for Reverse Osmosis Systems. 14 Gallon (22 3/16" high X 15 3/8" diameter - including base) Tank valve is located on the bottom of the tank. Remove the rubber protective cover to install the valve. SS Stainless Steel Connection Stem - Connection Size: 1/4" MNPT - Valve Optional.  If you order the Amtrol RO 14 you will receive the PAE-1070 14 gallon tank.

    Learn More
    $279.99 Special Price $199.99
  3. Air Pressure Gauge for Reverse Osmosis Water Accumulator Tanks -1000
    Air pressure gauge for reverse osmosis water accumulator tanks
    Air pressure gauge for reverse osmosis water accumulator tanks - Specially calibrated for reverse osmosis system tanks. Scale from 1 to 20 PSI. Large scale reading over small PSI range allows optimum accuracy. Just like car tires lose air pressure, so does the bladder of your reverse osmosis water accumulator tank. Improper tank air pressure will cause your system to operate improperly. This is a must for all reverse osmosis system owners.
    Learn More
    $24.99 Special Price $17.99 As low as $12.99

reverse osmosis storage capacity chart


Easy TDS Membrane Performance Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.

See our selection of TDS meters under Water Tests


Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.





* AquaSky the registered trademark of AquaSky,the manufacturer of AquaSky brand of under counter drinking water system filtration equipment. The replacement water filter cartridges, reverse osmosis membranes, water tanks, faucets and repair parts listed above are not manufactured or endorsed by AquaSky. Rather, these replacement filters, RO reverse osmosis membranes and DIY replacement parts are manufactured by other companies. While these replacement tanks, water filters, repair parts and reverse osmosis membranes are compatible for use in AquaSky under counter reverse osmosis drinking water filtration equipment, we make no representation as to whether using these water filter cartridges and RO reverse osmosis membranes is consistent with the warranty and specifications applicable to AquaSky under counter drinking water system equipment.