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Drip Emitters on 170‑ft Line – Capacity and Converting Spray Zone to Drip

1" Irritrol valve, ½" poly, 170 ft. How many 2 GPH emitters? Also, can an existing PVC spray zone be temporarily converted to drip by capping heads and adding a pressure reducer at one head?

Answers

Valve delivers ~5 GPM (300 GPH) → up to 150 emitters at 2 GPH.
Yes, cap all heads, install pressure reducer and drip adapter at one head.

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