I have a similar problem with a Grohe inlet valve type 37 095. The cistern is a side fill and the inlet valve is new but continues to drip slowly after toilet has been flushed. I know some inlet valves require a servo valve in series with the water inlet to reduce mains pressure. Does this apply to the above grohe inlet valve. If so the servo valve didn't come with the product and noone has given me a straight answer.
robert
June 2012