180L1003, Danfoss HPP, Solenoid Valve, VDHT BL2 3/4 NC BSP N. 2/2 - way integrated valve block, Type VDHT BL2, Block version large (BL), Normally closed (NC), British Standard Pipe (BSP) thread, new version slimline (N) The VDHT valve series are designed for several applications in neutral media compatible with the sealing and O-ring materials used. Typical media are water, cleaning fluids and light heating oil.