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Safety Valve 1/4" - 3 Bar

Part number (MPN)
998447
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Source
retailer parts list
checked 2026-11-06
Fitting notes

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

Compatible appliances

Always check the model and serial number on the data plate before ordering.

Frequently asked questions

Which appliances does 998447 fit?

The sources we checked list 998447 (Safety Valve 1/4" - 3 Bar, Ariston) for: Ariston Excalibur 100, Ariston Excalibur 80, Ariston Microsystem 10 RFFI, Ariston Microsystem 15 RFFI, Ariston Microsystem 21 RFFI, Ariston Microsystem 28 RFFI, ECOSYSTEM 27 RFFI from serial, MICROCOMBI 23 MFFI from serial, MICROCOMBI 27 MFFI from serial, MICROSYSTEM 10 RFFI from seria, MICROSYSTEM 15 RFFI from seria, MICROSYSTEM 21 RFFI SYSTEM NG, MICROSYSTEM 28 RFFI SYSTEM NG. Always check the model and serial number on the data plate before ordering.

Does 998447 have equivalent or superseded part numbers?

The sources we checked list no equivalents for 998447. Ask a Ariston stockist to confirm.

What should I check before fitting 998447?

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

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Some lists are dated and the part may have been superseded. Information only, compatibility not guaranteed.