Spare parts
This category contains replacement parts for IVAR expansion vessels used in heating and water systems. The spare parts include internal rubber bags and metal flanges for vessels of various capacities, from small 2l units to large 500l models. These components are essential for maintaining system pressure stability and preventing damage from thermal expansion.
Replacement bags are available in EPDM or butyl rubber, depending on the vessel model and operating conditions. Flanges are offered in different thread sizes, including 3/4", 1", and 5/4", and are zinc-plated for corrosion resistance. These parts are compatible with IVAR models such as AC, AF, AFH, and AFV.
How to choose
- Match the replacement bag or flange to the vessel model and capacity (e.g., 2–8l, 60–100l, 200–500l) as specified by the manufacturer.
- Select the correct connection thread type (e.g., 3/4", 1", 5/4") to ensure compatibility with the existing vessel.
- Choose the appropriate rubber material (EPDM or butyl) based on the vessel type and system requirements.
Frequently asked questions
Can I use an EPDM bag in a butyl-rated vessel?
No. The rubber material must match the original specification of the vessel to ensure proper sealing and durability.
What thread size is needed for a 200–500l vessel?
A 5/4" thread is required for flanges used with vessels in this size range.
Product sorting
List of products
This EPDM replacement bag is suitable for IVAR AC expansion tanks with a capacity...
The IVAR Q110008 is a replacement bag for 2L AC systems, suitable for use with...
This EPDM replacement bag is designed for IVAR AC expansion tanks with a 5-8L...
This EPDM replacement bag is suitable for IVAR AF/AFH/AFV expansion vessels with a...
This EPDM replacement bag is suitable for IVAR AFH and AFV expansion vessels with...
This EPDM replacement bag is intended for IVAR AFH/AFV 300l expansion tanks. It is...
This EPDM replacement bag is intended for IVAR AFH and AFV expansion tanks with...
This EPDM replacement bag is intended for use in IVAR AFV 500l expansion vessels....
This zinc-plated replacement flange is intended for IVAR AC, AF, AFH and AFV...
This zinc-plated replacement flange is designed for IVAR AFH/AFV expansion vessels...
This spare flange is designed for AC systems and is compatible with expansion...