42774 Grohe - dual flush valve
Spare dual flush valve, commonly known as a syphon or dump valve to fit the Grohe DAL dual flush valve cisterns.
Older versions have 1x green air hose and 1x clear air hose. Later models 2012 have 1x blue air hose and 1x clear air hose.
The Grohe dual flush valve (42774 000) is a genuine Grohe product, covered by a minimum 1 year Grohe manufacturer's guarantee.