Viessmann
Viessmann P & T Valve 7829586
Pressure and temperature relief valve, Viessmann part 7829586, for Vitodens 222-F and 242-F appliances.
At a glance
- Also known as 2321446
£135.20
£112.67 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The P & T valve is a pressure and temperature relief valve manufactured by Viessmann and identified by part number 7829586. It is fitted to Viessmann Vitodens 222-F and 242-F appliances, where it provides a safety relief function on the appliance's pressure system. When set pressure or temperature limits are reached, the valve opens to discharge and then reseats.
Signs this part needs replacing
- Water passing continuously from the valve discharge, indicating the valve is not reseating
- Dripping or weeping from the discharge pipe with the system at normal operating pressure
- Discharge occurring at normal system temperature and pressure, suggesting the valve has weakened or is fouling
- Visible scale, corrosion or debris at the valve body or seat
- The valve fails to discharge when tested by the recommended method, indicating it is seized
Before you order
- Confirm the appliance model and serial number against the fit list above
- Check the part number on the existing valve is 7829586
- Verify the system pressure and expansion vessel operation before replacing the valve, as incorrect charge pressure can cause repeated discharge
- Work on pressure and temperature relief valves should be carried out by a competent heating engineer
Compliance
| Alternative numbers | 2321446 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 222-F FS2A 19KW MODEL NUMBER SERIAL No. 7419987 | 47-819-15 | 47-819-15 | — | — |
| VIESSMANN VITODENS 222-F FS2A 26KW MODEL NUMBER SERIAL No. 7374977 | 47-819-16 | 47-819-16 | — | — |
| VIESSMANN VITODENS 222-F FS2A 35KW MODEL NUMBER SERIAL No. 7374978 | 47-819-17 | 47-819-17 | — | — |
| VIESSMANN VITODENS 242-F B2SA 19KW SERIAL No. 7423015 | 47-819-18 | 47-819-18 | — | — |
| VIESSMANN VITODENS 242-F B2SA 26KW SERIAL No. 7374980 | 47-819-19 | 47-819-19 | — | — |
Documents & drawings
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