diff --git a/src/main/java/com/gregtechceu/gtceu/common/machine/multiblock/part/TankValvePartMachine.java b/src/main/java/com/gregtechceu/gtceu/common/machine/multiblock/part/TankValvePartMachine.java
index 62192a51d73..024ca99e3f7 100644
--- a/src/main/java/com/gregtechceu/gtceu/common/machine/multiblock/part/TankValvePartMachine.java
+++ b/src/main/java/com/gregtechceu/gtceu/common/machine/multiblock/part/TankValvePartMachine.java
@@ -31,7 +31,7 @@ public class TankValvePartMachine extends MultiblockPartMachine {
     public TankValvePartMachine(BlockEntityCreationInfo info, boolean isMetal) {
         super(info);
 
-        tankProxy = attachTrait(new FluidTankProxyTrait(IO.BOTH));
+        tankProxy = attachTrait(new FluidTankProxyTrait(getIO()));
         autoIOSubscription = new ConditionalSubscriptionHandler(this, this::autoIO, this::shouldAutoIO);
     }
 
@@ -104,4 +104,8 @@ private boolean shouldAutoIO() {
         if (tankProxy.isEmpty()) return false;
         return getTargetTank() != null;
     }
+
+    private IO getIO() {
+        return shouldAutoIO() ? IO.OUT : IO.BOTH;
+    }
 }