Leak Sentry™ Kit - Fill Valve 1/2", Flush Valve 1-1/2" & Handle Adaptor Kit
Complete modern replacement for old style Fill Valve & Flush valve with adapator for your existing cistern lever
- 400UK 1/2" Bottom Entry Fill Valve
- 507UK 1-1/2" Outlet Flush Valve fits most toilet cisterns
- Unique adaptor works with your existiing Front Mounted cistern lever
- Adjust A Flush™ Flapper dials for a custom Water Saving Flush
- Light touch operation requires less effort to flush
- Easier for children & the elderly to operate, without struggling against a syphonic action
- Works efficiently with today’s 6 litre cisterns
- Ultra simple maintenance - simply snap on new ‘502074’ flapper if necessary
- 507UK Flush Valve is not suitable for old-style double trap toilets
Leak Sentry™ - How Does It Work ?
When a leak starts to drain the toilet tank, a unique "locking" action prevents the 400UK Float Cup from dropping.
This forces the user to press the pushbutton twice. The first time unlocks the Leak Sentry™ System and lets the Float Cup drop and the tank starts refilling.
The second time will allow you to initiate the flush as normal. Even when the Leak Sentry™ System "locks" the valve before refill, the toilet remains fully operational.
Kit Contains
- 1 x 400UK Fill Valve
- 1 x 507UK Flush Valve
- 1 x Handle Adaptor
- 1 x Leak Sentry™ device
- 1 x Installation sheet

Our valves can be adjusted to limit the water used for each flush. Think smart and install a Fluidmaster product in your cistern.