Grohe DAL single flush valve assembly.
Also known as a servo discharge valve, dump valve, or syphon.
To be used with Grohe concealed cisterns with a single flush push button (not suitable for dual flush / twin button systems).
Suitable for use with the Grohe DAL discharge piston 43544 000
Pre-assembled with new discharge piston/seals. Supplied as a 270mm assembly, which can be easily trimmed down to suit the cistern. A taller/longer version is the Grohe 43486 000.
The Grohe DAL single flush valve assembly 42137 000 is a genuine Grohe product, covered by a minimum 1 year Grohe manufacturer's guarantee.