A brass drain valve is used when the pump stops, and you want to drain the water from the pipes. For this to work, you need one standard nozzle without an anti-drop feature on all ends of the line.
Brass nozzle with whole 15 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 80 μm, 100 μm and 120 μm
Inox nozzle with whole from 15 μm, 20 μm, 30 μm, 40 μm and 50 μm
Inox TEE fitting
ST Confort pump - 0,1 to 1L/min
Board W2, wall outside shower
Base with castors Z, 55 kg, 65 x 65 x v11 cm, light concrete
Antidrip valve (spring + ball)
Square W, a wall outside the shower