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Aqua Sky, inc. Since 1998 

Toll-free U.S.A & Canada


U.S.A (tech support ) +1-954-297-5093



 Worldwide Shipping From The Following Locations


Website last update / the 30th of October 2023

Order Processing


  • U.S.A, Canada, Europe and Australia free shipping all orders.

  • Orders will be dispatched within one business day after an order has been received.

  • Orders placed on Friday after 3pm (Pacific Time) will begin processing the following Monday.

  • Confirmation email will be sent to customers once the order has been dispatched.

  • Please feel free to contact us for any additional information by email Phone toll free  1(800) 551-3221 

  • (New York U.S.A.) 

  • (California U.S.A.)

  • (Ontario Canada.)

  • (Athlone, Dublin Ireland.)   

  • (Manchester, U.K.)

  • (Dijon, France.)

  • (Nürnberg, Germany.)

  • (Kapfenberg, Austria.)

  • (Alice Springs, Australia.)

Buy online Set of 3 compatible filters +3 housings sump for the discontinued Avantapure RO-450 Reverse Osmosis water system  Replacement filter cartridges And three filter housings which will be 2" longer than what you have now. It's the new model with the same thread diameter and the same kind of factory-made filters. (total six parts)


Orders will be shipped in 2 separate packages as the following:-

(3 Sump housings from California) + (3 filters, cartridges from Utah) (free shipping)

usually, filter cartridges arrive first, and filter housing sump after 3 - 4 more days since its back order because of the high volume of orders

Filters are Also compatible with updating the following systems:-


Steeltec RO-335,

Watercare RO 335,

R.O.-35 Ultrawater Avian RO-450,

AvantaPure RO-450,

EWW 435,ExtraPURE RO-450,

Ge Pro-Elite RO-450,

PURO-35T R.O. System Atlantic Filter Corp,


Water-Right Eclipse WRO35,

Lindyspring LSRO35,


Please send a picture of your water system for confirmation before or after placing an order.


Stage 1-

The sediment cartridge is the first filter installed in the Avantapure RO-450 Reverse Osmosis filter system. The primary function of a sediment filter is to remove large and fine particles from drinking water, such as sand, dirt, silt, and rust particles. Removal of such particles allows for a better performance of all the following filters, such as Carbon Block or GAC filters.

  • Micron rating: 5 Micron.
  • Dimensions: 11.75" x 2.5"
  • Lifetime: Replace every year, depending on the water quality.

This AvantaPure RO-450 Filter is wrapped, sealed, and meets NSF Standards and Regulations. The filter will fit Residential Reverse Osmosis AvantaPure RO-450 Reverse Osmosis water filters.


Stage 2-

Reverse osmosis under counter sink replacement filters has a - 50 Gallon per Day NSF Certified Thin Film TFC Membrane is the main component of Avantapure RO-450 Reverse Osmosis Unit. They are made with 100% Organic fine thin film flat sheet 99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water.

Avantapure RO-450 reverse osmosis membrane has The micron rating of a thin film less than 1/10000th of a Micron, which is 620,000 Times Finer Than Human Hair, 2,500 Times smaller than bacteria, and 20 Times smaller than any virus.


  • Product Features: 25-50 Gallons Per Day (15.8 Liters per Hour) Capacity 99% Stabilized Salt Rejection (Minimum Rejection 97%) NSF/ANSI Standard 58 listed Operating ConditionsPerformance specifications based on 500 ppm tap water, 50psi (0.35 MPa) applied pressure, 77°F (25°C) feed water temperature, feed water pH 7-8 and 15% recovery.


  • Element permeate flow may vary ± 15%. Maximum operation pressure: 125 psi (0.86 MPa)
  • Maximum feed flow rate: 2 gpm
  • Maximum operating temperature: 113° F (45° C)
  • Maximum feed water turbidity: 1 NTU
  • Maximum feed water SDI (15min): 5
  • Chlorine Tolerance: 0 Feed water
  • pH range: 2-11 Minimum brine flow to permeate flow
  • ratio: 4:1


Stage 3-

An activated Carbon Block Filter is made of fine coconut shell carbon and removes odors and tastes of many organic compounds, especially chlorine. Though, because this filter is made of packed carbon (forming a cylinder block), they offer a much finer filtration of suspended particles and dirtMicron rating: 5 Micron.

  • Dimensions: 11.75" x 2.5"
  • Lifetime: Replace every year, depending on the water quality.

This filter is wrapped and sealed and meets NSF Standards and Regulations.

The filter will fit Avanta Pure RO-450 Units.

Avantapure RO-450 Water System Replacement Filters Cartridges And Membrane Parts

  • Avantapure RO-450 replacement filters organic cellulose for updating  3 stage under sink Avantapure RO-450  Reverse osmosis water systems, 100% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water, the main stage in this systems is the RO membrane and all of the other replacement filters are serving and providing protection to that membrane, if the pre-filters fail to work due to poor quality, that means your RO membrane will not give you 100% reduction rate. it include 2 filters and a membrane that must be replaced periodically, The different filters represent the different stages that the water goes through while being purified, Generally - Pre-Filters and post-Filters in the Avantapure RO-450 systems can last around 8 To 12 months between

    this set includes 3 filter housing sump as well as the 3 filter replacement cartridges.

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