*Interchangeable piston comprising the whole mechanism of the flush. *Anti-sipon device incorporated. *Minimum pressure: 0,900 bar. *3/4 male inlet. *Flow: 1,5 l/s. *Automatic closing: 7 ± 2s. *Supplied with: seal, washer and union nut for Ø28 mm. *Gross weight: 0,790 kg.