Ariston Boiler Pressure Relief Valve 61312668 Replacement Part

This Ariston pressure relief valve (PRV) 61312668 releases excess system pressure to protect your boiler. Over time, the valve seat can wear or debris can stop it sealing, which may cause dripping from the discharge pipe and repeated pressure loss or frequent topping up. Replacing the correct PRV restores safe pressure control, helps prevent lockouts, and reduces the risk of recurring shutdowns.

Compatibility :

• Alteas One Net: 30 (13/12/2019), 35 (13/12/2019)
• Cares One: 24 LPG, 24 NG, 30 LPG, 30 NG
• Clas (FF System): 21 FF System, 28 FF System
• Clas HE 18 System: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Clas HE 24: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Clas HE 24 System: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Clas HE 30: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Clas HE 30 System: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Clas HE 38: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Clas HE Evo: 24, 30, 38
• Clas HE Evo (ERP): 24kW ERP, 30kW ERP, 38kW ERP
• Clas HE Evo System: 18, 24, 30
• Clas HE Evo System (ERP): 18kW System ERP, 24kW System ERP, 30kW System ERP
• Clas Net One Combi: 24, 30, 38
• Clas One Combi: 24, 30, 38
• Clas One System: 18, 24, 30
• Combi A MFFI 24: Edition 5 (04/12/2006), Edition 9 (23/09/2011), (28/06/2013)
• Combi A MFFI 30: Edition 5 (04/12/2006), Edition 9 (23/09/2011), (28/06/2013)
• E Combi 24 FF: Edition 1 (02/06/2008), Edition 4 (30/08/2011)
• E Combi 30 FF: Edition 1 (02/06/2008), Edition 4 (30/08/2011)
• E Combi 38 FF: Edition 1 (02/06/2008), Edition 4 (30/08/2011)
• E Combi Evo: 24, 30, 38
• E Combi Evo (ERP): 24 ERP, 30 ERP, 38 ERP
• E Combi One: 24, 30
• E System: 24 (Edition 4 – 30/08/2011), 30 (Edition 4 – 30/08/2011)
• E System Evo: 24, 30
• E System Evo (ERP): 24 ERP, 30 ERP
• E System One: 24, 30
• Genus HE 24: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Genus HE 24 System: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Genus HE 30: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Genus HE 30 System: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Genus HE 38: Edition 5 (09/11/2010), Edition 7 (30/08/2011)
• Genus One Net: 24 (13/12/2019), 30 (13/12/2019), 35 (13/12/2019)

Important fitting advice

We recommend that all parts are fitted by a fully qualified Gas Safe registered engineer. If you need help confirming the right part, contact us our team has 10+ years of boiler spares knowledge and friendly chat support to help you quickly.

Delivery

At Boiler Spares Hub, we dispatch orders within 1 working day (Monday-Friday). Orders placed outside working days will be dispatched on the next working day. For delivery options available for this product, please add it to your basket or check our delivery options page.

Returns

We accept 30-day returns. Returns must be in an unopened, sealed box. If we find the item has been used or installation was attempted, we may refuse the return.

Frequently Asked Questions (FAQs)

1. What does a pressure relief valve (PRV) do in an Ariston boiler?
It releases water if system pressure gets too high, protecting the boiler and pipework.

2. How do I know if the PRV is leaking?
Common signs are dripping from the copper discharge pipe outside, pressure dropping, and frequent re-pressurising.

3. Will a leaking PRV cause low pressure and lockouts?
Yes. If it doesn’t reseal properly, pressure can keep falling and the boiler may lock out.

4. Can I just clean the PRV instead of replacing it?
Sometimes debris is the cause, but if the seat is worn it will still leak—replacement is the reliable fix.

5. Do I need an engineer to fit a PRV?
It’s a safety component and involves draining/refilling the system using a qualified heating engineer is recommended.