diff --git a/PHI-CL/data.lua b/PHI-CL/data.lua
index 4f317e6..8aed2f6 100644
--- a/PHI-CL/data.lua
+++ b/PHI-CL/data.lua
@@ -148,6 +148,7 @@ if settings.startup['PHI-CT'].value or settings.startup['PHI-MI'].value or (sett
     for _, v in pairs({'one-way-valve', 'overflow-valve', 'top-up-valve'}) do
         data.raw['valve'][v].hidden = false
         data.raw.item[v].hidden = false
+        data.raw.item[v].subgroup = 'energy-pipe-distribution'
 
         data:extend({{
             type = 'recipe',