Baxi
Baxi Isolation Valve Bottom 7740205
Baxi 7740205 bottom isolation valve for Baxi 824 System and 818 System appliances, used to shut off water flow during servicing.
At a glance
- Part type: Isolation valve (bottom)
- Also known as 1795800
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£54.25
£45.21 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 Baxi 7740205 is a bottom-mounted isolation valve manufactured by Baxi for use in its 800 series system appliances. It sits on the lower water circuit and lets an engineer shut off the flow to a component or section of the appliance so that work can be carried out without draining the whole system. The valve is listed against the 824 System and the wider 818 System range.
Signs this part needs replacing
- Water weeping from the valve body or around the spindle
- The valve will not shut off fully when turned, leaving flow through the circuit
- The handle or spindle is stiff, seized or turns without resistance
- Dripping from the compression joint after the valve has been operated
- Inability to isolate the appliance for servicing or pressure testing
Before you order
- Check the GC number and serial number on the appliance data badge against the compatibility list below before ordering.
- Confirm the alternative part number 1795800 if you are matching against older documentation.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Isolation Valve |
|---|
Compliance
| Manufacturer part number (MPN) | 7740205 |
|---|---|
| Commodity code | 8481 80 71 00 |
| Alternative numbers | 1795800 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 818 SYSTEM 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 41-470-99 | 41-470-99 | — | — |
| BAXI 818 SYSTEM 2 - INTERNAL FIT PRESSURE GAUGE | 41-470-99 | 41-470-99 | — | — |
| BAXI 818 SYSTEM Erp - SERIAL NUMBER ENDING AC | 41-470-73 | 41-470-73 | — | — |
| BAXI 818 SYSTEM Erp - SERIAL NUMBER ENDING BC | 41-470-73 | 41-470-73 | — | — |
| BAXI 818 SYSTEM Erp - SERIAL NUMBER ENDING CC | 41-470-73 | 41-470-73 | — | — |
| BAXI 824 COMBI 2 | 47-077-63 | 47-077-63 | — | — |
| BAXI 824 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-63 | 47-077-63 | — | — |
| BAXI 824 SYSTEM 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 41-884-09 | 41-884-09 | — | — |
| BAXI 824 SYSTEM 2 - INTERNAL FIT PRESSURE GAUGE | 41-884-09 | 41-884-09 | — | — |
| BAXI 824 SYSTEM Erp - SERIAL NUMBER ENDING AC | 41-470-74 | 41-470-74 | — | — |
Showing 10 of 37 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
BAXI appliance manual — 818 SYSTEM Erp - SERIAL NUMBER ENDING AC (GC 41-470-73), 824 SYSTEM Erp - SERIAL NUMBER ENDING AC (GC 41-470-74)
manualmanualBAXI appliance manual — 818 SYSTEM Erp - SERIAL NUMBER ENDING BC (GC 41-470-73), 818 SYSTEM Erp - SERIAL NUMBER ENDING CC (GC 41-470-73), 824 SYSTEM Erp - SERIAL NUMBER ENDING BC (GC 41-470-74), 824 SYSTEM Erp - SERIAL NUMBER ENDING CC (GC 41-470-74)
manualmanualBAXI appliance manual — 825 COMBI Erp - SERIAL NUMBER ENDING AC (GC 47-077-38), 830 COMBI Erp - SERIAL NUMBER ENDING AC (GC 47-077-39), 836 COMBI Erp - SERIAL NUMBER ENDING AC (GC 47-077-40)
manualmanualBAXI appliance manual — 825 COMBI Erp - SERIAL NUMBER ENDING BC (GC 47-077-38), 825 COMBI Erp - SERIAL NUMBER ENDING CC (GC 47-077-38), 830 COMBI Erp - SERIAL NUMBER ENDING BC (GC 47-077-39), 830 COMBI Erp - SERIAL NUMBER ENDING CC (GC 47-077-39), 836 COMBI Erp - SERIAL NUMBER ENDING BC (GC 47-077-40), 836 COMBI Erp - SERIAL NUMBER ENDING CC (GC 47-077-40)
manualmanualBAXI appliance manual — PLATINUM + 40 COMBI (GC 47-077-41)
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