Gardena Coupling with Flow Control Valve for 13mm (1/2") hose - Gardena 2976-26 Ref: GRD2976-26 Regulates or cuts off the water flow in the hose. Ideal for regulating the range of a sprinkler List price £7.99 Grovelands Online price including Nextday Deliver £7.19 Price: £7.19 (Including VAT at 17.5%)