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Heatline Boiler Diverter Valve Kit (D020103888 | 0020061621)
The Heatline Boiler Diverter Valve Kit (Part Nos: D020103888 or 0020061621) is a comprehensive internal mechanical restoration kit engineered for the compact composite and brass hydraulic blocks utilized in Heatline combination boilers. This essential maintenance kit features the primary internal spring-loaded cartridge mechanism, reinforced central control rod, dynamic shuttle plates, and a complete layout of precise high-tolerance sealing gaskets. By swapping out these high-wear internal components, the kit re-establishes seamless physical tracking within the hydro-block, letting the boiler cleanly lock down or open water channels to separate the space heating circuit from the domestic hot water secondary plate heat exchanger.
Cross-Circuit Flow Rectification: Repairs the prominent system fault where central heating water drifts into the radiators during summer hot water tap operations, locking the energy focus exclusively onto domestic demands.
Scale-Resistant Internals: Built with advanced low-friction guide stems engineered to counter the sticky accumulation of hard water limescale and floating black iron oxide sludge.
Hermetic Zone Sealing: Outfitted with robust, industrial-grade rubber O-rings designed to maintain tight structural isolation during high-temperature thermal spiking and structural system pressure shifts.
Cost-Efficient Overhaul: Provides a targeted mechanical rebuild that addresses the core points of physical wear, removing the logistical necessity and higher cost of replacing the entire molded hydraulic block.
Compatible Models:
Monza 24C — 47-157-21
Monza 28C — 47-157-22
Heatline
A00236-01
