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The expansion vessel is a small chamber that is used to protect closed heating systems from pressure surges. The pressure vessel is filled with air that acts as a cushion against surges in pressure within the system.
Part No: 1018311 / MPN: 87161425060
Sorry, this part is now obsolete
Part No: 1021894 / MPN: 87161134160
Part No: 1013101 / MPN: 87154072600
Part No: 1011491 / MPN: 77161921580
Part No: 1021895 / MPN: 87161134180
Part No: 1011527 / MPN: 77161921970
Part No: 1019407 / MPN: 87161563240