Brand: ELBI • SKU: 022-647

The ELBI drukvat HXH 50 S/Steel is a 50‑liter horizontal stainless‑steel diaphragm (expansion) vessel engineered for potable water and hydronic installations. Constructed in AISI 304 stainless steel with a replaceable EPDM diaphragm, the HXH 50 isolates water from the tank shell to minimise corrosion and ensure long service life. The unit is supplied with a mounting plate for pump integration and a 1" connection, rated for typical working pressures up to 10 bar and operating temperatures up to approximately +99°C — ideal for booster sets, hydrofor systems and sanitary hot‑water storage applications.

Key specifications

• Capacity: 50 L (litres)
• Material: Stainless steel AISI 304 (INOX)
• Membrane: Replaceable EPDM diaphragm (suitable for drinking water)
• Connection: 1" inlet (pump/pipeline compatible)
• Max working pressure: 10 bar; Precharge ~2 bar (factory settings vary)
• Max operating temperature: up to ~99°C
• Includes mounting plate for pump assembly

These design features make the HXH series well suited for absorbing thermal expansion in hot‑water circuits, preventing waterlogging and reducing hydraulic shocks in pump systems. ELBI’s diaphragm expansion technology is widely used across hot water, heating and solar applications for reliable pressure control and extended system life.

Benefits & installation notes

Benefits include corrosion resistance (stainless shell), hygienic potable‑water compatibility (EPDM bladder), easy bladder replacement and robust mechanical strength for repeated pressure cycles. Typical installations: domestic and light commercial booster sets, hydrofor assemblies, hot water buffer and heating expansion loops. For compatibility with glycol or specific system fluids, consult ELBI technical documentation or supplier datasheets. ([sklep.ekopomp.pl](https://sklep.ekopomp.pl/zbiorniki-ze-stali-nierdzewnej/elbi-hxh-50-inox.html?utm_source=chatgpt.com), [elbi.net](https://elbi.net/product/expansion-tanks/?utm_source=chatgpt.com))

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