... indicate. Ordering notice When ordering please indicate needs valve's name, the model, the function code number ... and the control device position code number. The valve painting generally is the pessimistic hammer finish, if ... fume, the human can in the room inside control valve.BSD,DC24V,0.5A.,DC24V.Uses the BSD ... closes, the human can in the room inside control valve.BSFD,DC24V,0.5A.,DC24V.Uses the BSFD ...