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   -> Instruction for Refilling the 215 Inline DI filter
  RO260 and RD322 standard tubing size
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RO260 and RD322 standard tubing size



For model RO260 and RD322 big size RO systems, the tubing sizes are

- Water supply: 3/8” tubing

- Pure water output 1/4” tubing

- Drain line: 1/4” tubing

- Pipe size between bottom 3 filters, 1/2”
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