diff --git a/code/game/objects/items/RPD.dm b/code/game/objects/items/RPD.dm
index 52b9ce97b74..12a0cdcdfcd 100644
--- a/code/game/objects/items/RPD.dm
+++ b/code/game/objects/items/RPD.dm
@@ -19,7 +19,7 @@ GLOBAL_LIST_INIT(atmos_pipe_recipes, list(
 		new /datum/pipe_info/pipe("Manifold", /obj/machinery/atmospherics/pipe/manifold, TRUE),
 		new /datum/pipe_info/pipe("4-Way Manifold", /obj/machinery/atmospherics/pipe/manifold4w, TRUE),
 		new /datum/pipe_info/pipe("Layer Adapter", /obj/machinery/atmospherics/pipe/layer_manifold, TRUE),
-		new /datum/pipe_info/pipe("Multi-Deck Adapter", /obj/machinery/atmospherics/pipe/multiz, TRUE),
+		new /datum/pipe_info/pipe("Multi-Deck Adapter", /obj/machinery/atmospherics/pipe/multiz, FALSE),
 	),
 	"Devices" = list(
 		new /datum/pipe_info/pipe("Connector", /obj/machinery/atmospherics/components/unary/portables_connector, TRUE),
diff --git a/code/modules/atmospherics/machinery/pipes/multiz.dm b/code/modules/atmospherics/machinery/pipes/multiz.dm
index 60246239c07..cce990ab11e 100644
--- a/code/modules/atmospherics/machinery/pipes/multiz.dm
+++ b/code/modules/atmospherics/machinery/pipes/multiz.dm
@@ -43,15 +43,14 @@
 	center.pixel_x = PIPING_LAYER_P_X * (piping_layer - PIPING_LAYER_DEFAULT)
 	. += center
 
-
 ///Attempts to locate a multiz pipe that's above us, if it finds one it merges us into its pipenet
 /obj/machinery/atmospherics/pipe/multiz/pipeline_expansion()
 	var/turf/T = get_turf(src)
-	var/obj/machinery/atmospherics/pipe/multiz/above = locate(/obj/machinery/atmospherics/pipe/multiz) in(SSmapping.get_turf_above(T))
-	var/obj/machinery/atmospherics/pipe/multiz/below = locate(/obj/machinery/atmospherics/pipe/multiz) in(SSmapping.get_turf_below(T))
-	if(below)
-		below.pipeline_expansion() //If we've got one below us, force it to add us on facebook
-	if(above)
-		nodes += above
-		above.nodes += src //Two way travel :)
+	for(var/obj/machinery/atmospherics/pipe/multiz/above in SSmapping.get_turf_above(T))
+		if(above.piping_layer == piping_layer)
+			nodes += above
+			above.nodes += src //Two way travel :)
+	for(var/obj/machinery/atmospherics/pipe/multiz/below in SSmapping.get_turf_below(T))
+		if(below.piping_layer == piping_layer)
+			below.pipeline_expansion() //If we've got one below us, force it to add us on facebook
 	return ..()