anchor.diff:  	icon_state = "dvalve_map"
   	valve_type = "d"
   	pipe_state = "dvalve"
  +	interaction_flags_machine = INTERACT_MACHINE_ALLOW_SILICON | INTERACT_MACHINE_OFFLINE | INTERACT_MACHINE_OPEN | INTERACT_MACHINE_OPEN_SILICON
   	
   /obj/machinery/atmospherics/components/binary/valve/digital/layer1
   	piping_layer = PIPING_LAYER_MIN
  
positive.code: 	desc = "A pipe with a valve that can be used to disable flow of gas through it."
  
  	can_unwrench = TRUE
  
  	var/frequency = 0
  	var/id = null
  
negative.code: 	else if(dir==WEST)
  		setDir(EAST)
  
  /obj/machinery/atmospherics/components/binary/valve/interact(mob/user)
  	add_fingerprint(usr)
  	update_icon_nopipes(1)
  	if(switching)
  