Brass DN15 overpressure diaphragm valve — reliable pressure control for water, oil and heating systems Key benefits Keeps system pressure stable: designed to maintain correct operating pressure in water, oil and other closed systems to prevent overpressure events. Durable brass construction: corrosion-resistant material for long service life in plumbing and heating environments. Precise diaphragm action: membrane design provides consistent, repeatable pressure regulation under normal operating conditions. Compact, portable DN15 size: easy to handle and install in confined spaces. Flexible installation: suitable for vertical or horizontal mounting in heating systems without compromising performance. For homeowners and professionals: suitable for private and commercial plumbing or heating installations. Important attributes Function: overpressure/pressure-regulating diaphragm valve to protect and stabilize system pressure. Compatibility: water systems, oil systems, closed hot water systems and general heating circuits. Size: DN15 (nominal diameter). Material: brass body with diaphragm sealing element. Performance: engineered for reliable pressure maintenance and consistent operation across orientations. Typical applications Domestic closed hot-water boilers: maintain safe operating pressure and protect the system from overpressure. Small commercial or residential heating circuits: pressure regulation and safety in radiators, boilers and circulation loops. Oil-handling systems: pressure control in oil-fed heating lines or similar closed oil systems. Installation and use notes Install vertically or horizontally as required by system layout; performance remains consistent in either orientation. Intended for use by homeowners, installers and service technicians in private or commercial plumbing and heating systems. Select DN15 valve when matching piping and fittings to ensure proper fit and operation. A practical, durable solution for maintaining safe pressure in water, oil and heating systems where a compact DN15 brass overpressure diaphragm valve is required.