diff --git a/api/s7_valves.py b/api/s7_valves.py
index b63955e..c828916 100644
--- a/api/s7_valves.py
+++ b/api/s7_valves.py
@@ -157,7 +157,7 @@ def inp_in_valve(line: str) -> str:
     diameter = float(tokens[3])
     v_type = str(tokens[4].upper())
     setting = str(tokens[5])
-    minor_loss = float(tokens[6])
+    minor_loss = float(tokens[6]) if len(tokens) >= 7 else 0.0
     desc = str(tokens[-1]) if has_desc else None
 
     return f"insert into _link (id, type) values ('{id}', 'valve');insert into valves (id, node1, node2, diameter, type, setting, minor_loss) values ('{id}', '{node1}', '{node2}', {diameter}, '{v_type}', '{setting}', {minor_loss});"