makes all obj/machinery below obj layer

code/game/machinery/machinery.dm

@@ -97,6 +97,7 @@ Class Procs:
 	name = "machinery"
 	icon = 'icons/obj/stationobjs.dmi'
 	pressure_resistance = 10
+	layer = BELOW_OBJ_LAYER
 	var/stat = 0
 	var/emagged = 0
 	var/use_power = 1

code/game/objects/structures/tank_dispenser.dm

@@ -3,7 +3,6 @@
 	desc = "A simple yet bulky storage device for gas tanks. Has room for up to ten oxygen tanks, and ten plasma tanks."
 	icon = 'icons/obj/objects.dmi'
 	icon_state = "dispenser"
-	layer = BELOW_OBJ_LAYER
 	density = 1
 	anchored = 1.0
 	var/oxygentanks = 10

code/modules/reagents/chemistry/machinery/chem_dispenser.dm

@@ -6,7 +6,6 @@
 	icon_state = "dispenser"
 	use_power = 0
 	idle_power_usage = 40
-	layer = BELOW_OBJ_LAYER
 	var/ui_title = "Chem Dispenser 5000"
 	var/energy = 100
 	var/max_energy = 100