diff --git a/tutorials/sphereGranFlow/RotaryAirLockValve/settings/particlesDict b/tutorials/sphereGranFlow/RotaryAirLockValve/settings/particlesDict
index 29bf3bcb..f5d5de63 100644
--- a/tutorials/sphereGranFlow/RotaryAirLockValve/settings/particlesDict
+++ b/tutorials/sphereGranFlow/RotaryAirLockValve/settings/particlesDict
@@ -6,49 +6,21 @@ objectName 	particlesDict;
 objectType 	dictionary;
 fileFormat  ASCII;
 /*---------------------------------------------------------------------------*/
+
 setFields
 {
-	/*
-	    Default value for fields defined for particles:
-
-		These fields should always be defined for simulations with spherical particles
-	*/
-
-	defaultValue 
-	{
-		velocity 		 realx3 (0 0 0);         // linear velocity (m/s)
-
-		acceleration     realx3 (0 0 0); 	     // linear acceleration (m/s2)
-
-		rVelocity 		 realx3 (0 0 0); 	     // rotational velocity (rad/s)
-
-		shapeName 		word     sphere; 	     // name of the particle shape 
-	}
-
-	selectors
-	{
-		shapeAssigne
-		{
-			selector     stridedRange; 	         // other options: box, cylinder, sphere, randomPoints 
- 
-			stridedRangeInfo
-			{
-				begin 	   0;			         // begin index of points
-
-				end 	   50000;		 	     // end index of points 
-
-				stride     3;			 		 // stride for selector 
-			}
-
-			fieldValue  					     // fields that the selector is applied to 
-			{
-				shapeName 	word    sphere;      // sets shapeName of the selected points to largeSphere
-			}
-		}
-	}
+    defaultValue
+    {
+        velocity         realx3 (0 0 0);         // linear velocity (m/s)
+        acceleration     realx3 (0 0 0);         // linear acceleration (m/s2)
+        rVelocity        realx3 (0 0 0);         // rotational velocity (rad/s)
+        shapeName        word   sphere;          // name of the particle shape
+    }
+    selectors
+    {}
 }
 
-positionParticles 				                 // positions particles 
+positionParticles                             
 {
-	method     empty;                            // other options: random and ordered
+        method      empty; 
 }