Answer :
Final answer:
The water supply to a bathtub and whirlpool bathtub filler valve should be protected by an air gap or in accordance with section 417 to prevent contamination and maintain proper hygiene.
Explanation:
The water supply to a bathtub and whirlpool bathtub filler valve should be protected by an air gap or in accordance with Section 417. An air gap is a physical separation between the water supply and the fixture that prevents backflow, ensuring the safety and cleanliness of the water supply. Section 417 refers to the specific guidelines and regulations for protecting water supplies in plumbing systems. These measures are important to prevent contamination of the water supply and maintain proper hygiene.
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