Diaphragm expansion vessel REFLEX S-18, 18L, 10 bar / 70°C, threaded connection G3/4", white, for heating, solar and cooling systems, hanging, with non-replaceable membrane 9702800

Expansion vessels – stability and safety of the installation

The Reflex S-18 diaphragm expansion vessel is a key component of closed heating, solar and cooling systems. Its task is to compensate for the expansion of the liquid and maintain the pressure in the installation at a safe level. This ensures stable and efficient operation of the entire system, protecting it from damage caused by pressure fluctuations. This is particularly important in installations powered by solar energy, where temperature changes are frequent and abrupt.

Construction and operating principle

The Reflex S-18 diaphragm vessel uses a membrane to separate the water part from the gas part. This membrane prevents gas from penetrating the water, which maintains constant working fluid parameters. The S-18 model has a non-removable diaphragm, which simplifies operation and minimizes the risk of failure. The durable construction made of high-quality materials guarantees long-lasting and trouble-free operation of the device. A G3/4” threaded connection facilitates integration with the existing installation, and the white housing provides an aesthetic appearance.

Key features and benefits

• Versatility: ideal for heating, solar and cooling installations – one vessel for various applications.
• Safety: compliance with PN-EN 13831 and directive 2014/68/EU confirms a high level of safety.
• Durability: non-removable diaphragm and resistance to glycol content up to 50% ensure long service life even in difficult operating conditions.
• Efficiency: 18-liter capacity allows for effective compensation of liquid expansion in medium-sized installations.
• Easy installation: G3/4” threaded connection facilitates quick and efficient connection to the installation.
• Temperature resistance: permissible operating temperature up to 70°C allows use in systems with elevated working temperature, and the maximum temperature in the system can reach 120°C.
• High quality workmanship: solid construction and precise execution guarantee reliable operation for years.
• Initial pressure: factory-set initial pressure at 1.5 bar ensures optimal operating conditions immediately after installation.

Whether you are a professional installer or an end user, the Reflex S-18 expansion vessel is a guarantee of stable, safe and efficient operation of your heating or solar installation. It provides peace of mind thanks to reliable protection against pressure fluctuations and system damage.