Major atmos overhaul: scrubbers and pipes can now co-exist

code/ATMOSPHERICS/components/trinary_devices/trinary_base.dm

@@ -2,6 +2,8 @@ obj/machinery/atmospherics/trinary
 	dir = SOUTH
 	initialize_directions = SOUTH|NORTH|WEST
 	use_power = 1
+	
+	var/on = 0
 
 	var/datum/gas_mixture/air1
 	var/datum/gas_mixture/air2
@@ -52,7 +54,7 @@ obj/machinery/atmospherics/trinary
 
 		return null
 
-	Destroy()
+	Del()
 		loc = null
 
 		if(node1)
@@ -94,6 +96,7 @@ obj/machinery/atmospherics/trinary
 				break
 
 		update_icon()
+		update_underlays()
 
 	build_network()
 		if(!network1 && node1)
@@ -160,5 +163,7 @@ obj/machinery/atmospherics/trinary
 		else if(reference==node3)
 			del(network3)
 			node3 = null
+		
+		update_underlays()
 
 		return null