Alpha Boiler Pressure Relief Safety Valve 1.028643

Alpha Boiler Pressure Relief Safety Valve (1.028643) The Alpha Boiler Pressure Relief Safety Valve (Part No: 1.028643) is a critical mechanical safety component engineered specifically for the Alpha Intec condensing combi and system boiler ranges. This spring-loaded safety valve is calibrated to act as the primary defense mechanism for the boiler's hydraulic network. When central heating system pressure spikes due to overheating, a failing expansion vessel, or overfilling, the valve's calibrated internal spring mechanically compresses once system pressure reaches a maximum safety threshold of 3.0 bar. This opens a dedicated discharge pathway, safely venting excess primary water out through the external blow-off pipework to protect the main heat exchanger and hydraulic manifold from structural over-pressurization damage. Over-Pressurization Defense: Automatically trips open at a precise 3-bar limit to discharge localized fluid volume, preventing catastrophic pressure fractures across the composite hydro-block assemblies and pipe joints. Heavy-Duty Spring Calibration: Constructed with an industrial-grade internal compression spring that maintains exact mechanical resistance, avoiding premature weeping or pressure loss under normal running states. Thermal-Shock Resilience: Equipped with high-grade elastomeric internal seats designed to handle intense, boiling water temperature spikes without melting, ensuring a tight, positive reset seal once pressure normalizes. Threaded Seating Layout: Built to the manufacturer's exact dimensional specifications for a direct thread-in fit, providing a secure, leak-free connection inside the boiler's primary water return sector. Compatible Models: ALPHA INTEC RANGE 12S BOILER ALPHA INTEC RANGE 18S BOILER ALPHA INTEC RANGE 28S BOILER ALPHA INTEC RANGE 24X BOILER ALPHA INTEC RANGE 28X BOILER ALPHA INTEC RANGE 26C BOILER ALPHA INTEC RANGE 30C BOILER ALPHA INTEC RANGE 34C BOILER Alpha A02209FE-01 1.028643