De Dietrich 88024738 flow switch 10 - 17 sections

De Dietrich Flow Switch 88024738 (P520‑17 / 17‑Sec Flow Sensor) Genuine flow switch (part number 88024738), also known as P520‑17 or 17‑second flow sensor. Compatible with De Dietrich and Baxi boilers for monitoring water flow and ensuring safe ignition and shutdown of the burner depending on coolant circulation Key Benefits: OEM quality ensures precision and reliability in flow detection 17-second delay version prevents false triggers during startup Ideal for both domestic and commercial boilers requiring secure flow control