The Danfoss LENO MSV-BD DN 40 balancing valve is used for manual flow balancing in heating and cooling systems. It is a combined balancing and shut-off valve that can be installed in both the flow and return pipework and is particularly suitable for constant flow systems. The valve is equipped with a swivelling measuring station for convenient measuring and draining, a clearly legible numerical pre-setting scale, and integrated test points for 3 mm needles. Also practical is the shut-off function with a coloured open/closed indicator and the option to open or close using an Allen key.