Pressure expansion vessel Reflex DE 60 L, 10 bar, for domestic hot water (model 7306400)

Reflex DE 60 L is a diaphragm-type pressure expansion vessel designed for domestic hot water systems. With a nominal volume of 60 litres and a maximum working pressure of 10 bar, the vessel separates the water and air volumes with a durable elastomer diaphragm to stabilise system pressure, compensate for thermal expansion and reduce pump cycling. It is intended for installations where a dedicated 60 L vessel for hot water (c.w.u.) is required in residential and light commercial buildings.

Advantages

The Reflex DE expansion vessel provides reliable pressure control through a pre-charged air chamber and a resilient diaphragm that prevents waterlogging. Its 60 L capacity offers effective compensation for thermal volume changes in domestic hot-water circuits, reducing stress on pipes and fittings. The compact cylindrical design allows straightforward wall or floor mounting in plant rooms or service cupboards, while the vessel’s construction supports long service life with routine maintenance.

Suitable for

• Residential domestic hot water (c.w.u.) systems requiring a 60 L expansion vessel
• Light commercial hot-water installations with moderate demand
• Systems needing pressure stabilisation to reduce pump cycling and noise
• Retrofit projects where space-efficient diaphragm vessels are required

Key specifications

• Nominal volume: 60 litres
• Maximum working pressure: 10 bar
• Diaphragm-type separating water and air
• Suitable medium: domestic hot water
• Installation orientation: suitable for wall or floor mounting depending on site requirements
• Material: corrosion-resistant steel shell with elastomer diaphragm (standard materials for this vessel type)

How to use

Install the Reflex DE expansion vessel in the cold-water return or appropriate connection point of the domestic hot-water circuit, following local regulations and the installer’s instructions. Ensure the vessel is mounted securely and the connection fittings are compatible with system piping. Check and set the pre-charge air pressure to match the static system pressure before commissioning. After installation, pressurise the system gradually and inspect for leaks. Regularly check air pre-charge and visual condition during routine maintenance intervals.

Usage recommendations

Prior to installation, confirm the system’s required expansion volume and static pressure to ensure the 60 L vessel is appropriate. Maintain the diaphragm by checking pre-charge pressure annually and draining or replacing the vessel if the diaphragm shows signs of failure. Refer to local codes and an accredited installer for safe mounting, connection and commissioning.