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Aqua Sky, inc. Since 1996



 Worldwide Shipping From The Following Locations

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 

  • (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 4 cartridges filters stage 1, 2, 3 and 4 replacement filters for PuROTwist 4000 Reverse Osmosis Water Filter Systems.
this set of filters offering the highest of quality and performance standards, high capacity output, automatic shut-off and the user friendly Twist Tap (Omnipure Q-Series) filters. 

To replace the filters simply twist the used filter off and twist the new filter on. 

No tools, no buckets, no mess.
The PT4000T50-SS is a 4 stage, point-of-use RO system that treats water .
Up to 50 Gallons Per Day

 STAGE 1 - 1x  Sediment Pre-Filter (Q5605) - Replace Every 12 Months 

STAGE 2 - 1x  Carbon GAC Pre-Filter (Q5633) - Replace Every 12 Months 

STAGE 3 - 1x  RO Membrane TFC 36-50 GPD (TQ56-36-50FC) - Replace Every 24  Months 

STAGE 4 - 1x  Carbon GAC Post Filter (Q5633) - Replace Every 12 Months.

Also compatible with TGI EZ-450  RO System

PuROTwist 4-Stage 36 GPD TFC Set Of 4 filters cartridges - With RO membrane

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