
Cistern Displacement Bags (3)
Sit in the cistern to lower the volume of water drawn per flush.

Adds a two-button short/full flush to a standard cistern.
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A conversion kit that adds a two-button dual-flush valve to a compatible single-flush cistern, giving you a short flush and a full flush so each flush only draws the volume you choose.
Designed for the common DIY fit. Suits standard close-coupled cisterns with a central valve opening — measure your opening against the guide before buying.
Fits many standard close-coupled cisterns with a central valve opening. Measure your valve opening against the size guide before installing.
Unopened items can be returned within 14 days of delivery. See our Returns policy for the full process.
This product reduces the flow rate of water. We don’t claim any specific money, water or percentage saved — results depend on your home and habits.

Sit in the cistern to lower the volume of water drawn per flush.

Best valueFillable banks that displace water in the cistern to lower per-flush volume.
Starter setSix screw-in aerators that mix air into the stream to lower tap flow rate.
Rated flow ≈ 5.7 L/min (1.5 GPM)