Grohe AV1 Eau2 Rapid SL Dual Flush Valve – 42314000
The Grohe AV1 dual flush valve (42314000) is a genuine replacement designed for modern Grohe concealed cisterns, delivering a smooth, water-efficient flush every time. It uses a single air-hose operation and is factory-set to 6/3 litre dual flush for reliable performance and reduced water use.
This AV1 valve (42314000) is suitable for Grohe GD2/EAU2/Rapid SL cisterns manufactured after 2008.
If your cistern was manufactured before 2008, you’ll need the earlier version: Grohe AV1 Dual Flush Valve – 38736000 .
Features & Benefits
- Dual flush design – water-saving small & large flush options (factory 6/3L)
- Single air-hose operation – simple, efficient, low maintenance
- Genuine Grohe part – durable, consistent performance
- Direct-fit replacement for selected Grohe concealed cisterns
Compatibility
Designed for Grohe concealed cisterns that use the AV1 valve, including:
- Grohe EAU2 Cistern AV1 (38691 000)
- Grohe EAU2 Dual Flush Cistern
- Grohe Rapid SL 2-in-1 WC Frame Set
- Grohe Rapid SL WC 6–9L Cistern (38525)
- Grohe WC Concealed Cistern models using AV1 (post-2008 GD2 family)
What’s Included
- Grohe AV1 dual flush valve – 42314000
Technical Details
- Part code: 42314000
- Flush volumes: 6/3 litres (factory), adjustable within system limits
- Actuation: compatible with Grohe mechanical or pneumatic setups that use AV1
- Air connection: single air hose
- Supplied: valve only (flush plate/button not included)
Questions & Answers
Will this fit my Grohe concealed cistern?
If your cistern is a Grohe EAU2 or Rapid SL model that uses the AV1 valve (e.g. 38691 000, 38525, Rapid SL frame sets), this is the correct replacement. If your GD2 cistern was made before 2008, you likely need the earlier AV1 valve (38736000).
What are the flush volumes?
Factory setting is 6 litres (full) and 3 litres (half). Some systems allow limited adjustment depending on the installation.
Does it include a flush plate or button?
No – this listing is for the valve only. Choose a compatible Grohe flush plate/button separately for your frame/cistern.
Is this the newer version of the AV1 valve?
Yes – this 42314000 version is used on modern EAU2/Rapid SL/GD2 setups. For older GD2 cisterns (pre-2008), use the earlier AV1: Grohe AV1 Dual Flush Valve – 38736000 .
How do I know if my system uses a single air hose?
Remove the flush plate to view the mechanism: EAU2/Rapid SL AV1 systems typically show a single clear/green air hose from the button/plate to the valve. If your unit looks different and is from before 2008, check the older AV1 (38736000) instead:
Grohe AV1 Dual Flush Valve – 38736000 .