Pilot kit combining the 204/A pilot with the R14/A pre‑regulator, used to control the pilot‑operated REFLUX 819 high/medium‑pressure regulator. The R14/A stabilizes pilot feed while the 204/A controls outlet set‑point; together they improve accuracy and dynamic response of the main balanced plug. Kit typically includes diaphragms, seals, springs and the AR100 restrictor service parts for scheduled maintenance on REFLUX loops.
