Diaphragm vessel assembly ZNP 11D CWU 72.11.02

Diaphragm vessel for DHW installations

The ZNP diaphragm vessel is a key element of domestic hot water systems. The device maintains constant pressure in the system by compensating for the thermal expansion of the medium.

Construction and operating parameters

The vessel's diaphragm construction utilizes a flexible membrane that separates the domestic water from the gas chamber. A capacity of 11 liters allows for effective compensation of thermal expansion in typical single-family residential installations.

The device operates in a temperature range up to 99°C, enabling its use even in demanding heating systems. A pre-charge pressure of 3 bar ensures optimal starting conditions for most domestic installations, while a maximum working pressure of 10 bar guarantees safe operation during sudden pressure surges.

Installation and compatibility

The wall-mounted design allows for installation on a wall using a standard bracket. The 3/4 inch connection fits standard installation systems.

The white color of the housing is suitable for technical rooms and boiler rooms. The compact design facilitates servicing and monitoring the device's condition throughout its entire service life.

Safety and hygiene of use

The vessel has full certification for contact with drinking water, confirming its safety for user health. The diaphragm construction eliminates the risk of secondary medium contamination and corrosion of metal components.

Automatic compensation of volume changes protects the installation from damage resulting from excessive pressure increases during system heating.