Why you need this valve Provides reliable protection against overpressure in closed hot water and heating systems, helping to maintain system efficiency and reduce the risk of damage to pumps, boilers, and radiators. Durable brass construction and a compact, robust design support long service life and easy integration into existing piping. What it is A DN15 brass membrane valve designed for overpressure protection and pressure regulation in closed hot water systems. Suitable for both residential and commercial plumbing setups requiring stable pressure control. Key features Material: brass Size: DN15 Valve type: membrane valve Orientation: can be installed vertically or horizontally Application: ideal for closed hot water systems and heating circuits Design: compact and robust, easy to retrofit into existing installations How it helps Stabilizes pressure within closed circuits, reducing operational interruptions and prolonging system component life. Helps prevent pressure spikes from expansion, thermal changes, or pump operation, contributing to safer and more reliable performance. Suitable for both homeowners and professionals seeking practical pressure regulation in plumbing and heating applications. Use scenarios Residential heating system: install in a closed hot water loop to regulate pressure and protect the boiler, pump, and radiators. Domestic hot water setup: place on the supply line to prevent overpressure during temperature fluctuations and expansion. Small commercial heating circuit: use in a compact, constrained installation to maintain consistent pressure and protect equipment in a closed system. Compatibility and installation notes Designed for standard DN15 piping and closed hot water systems. Installation can be vertical or horizontal to accommodate space constraints in both builds and retrofit projects.