High-quality replacement diaphragm (membrane) designed for Varem expansion and pressure tanks in the 19–25 L range. Ideal as a direct spare part for Varem Intervarem/Maxivarem/Plusvarem/Inoxvarem series and compatible 19/20/24 L hydropneumatic vessels. The membrane is manufactured from durable butyl (with EPDM options available from some suppliers), engineered to resist wear, avoid contact with tank walls, and ensure long life in potable water and booster pump applications.

• Brand: Varem
• Model fit: 19 L / 20 L / 24 L expansion vessels
• Material: Butyl rubber (reinforced/EPDM variants noted by resellers)
• Function: Replacement bladder/diaphragm for pressure/expansion tanks
• Pre-charge / system note: typical Varem precharge factory setting reference is 2 bar for many domestic models — verify on your tank label/manual before installation.

Performance & installation: The membrane mounts to the flange to prevent rubbing and extend service life; it restores proper air/water separation, reduces pump cycling, and eliminates frequent water hammer or short cycling in domestic and light-commercial systems. Replacement is straightforward for technicians familiar with Varem tanks—always isolate and depressurize the system before servicing.

Compatibility tip: confirm your tank code on the Varem label and compare membrane part codes for an exact match; many distributors list the 19–25 L membrane as a single compatible spare item. If unsure, consult Varem spare-parts documentation or your supplier with the tank serial number.