diff --git a/flow360/component/simulation/models/material.py b/flow360/component/simulation/models/material.py
index f666093cd..c2aaa5faf 100644
--- a/flow360/component/simulation/models/material.py
+++ b/flow360/component/simulation/models/material.py
@@ -255,7 +255,20 @@ class SolidMaterial(MaterialBase):
 
 
 class Water(MaterialBase):
-    """Water material used for LiquidOperatingCondition"""
+    """
+    Water material used for :class:`LiquidOperatingCondition`
+
+    Example
+    -------
+
+    >>> fl.Water(
+    ...     name="Water",
+    ...     density=1000 * fl.u.kg / fl.u.m**3,
+    ...     dynamic_viscosity=0.001002 * fl.u.kg / fl.u.m / fl.u.s,
+    ... )
+
+    ====
+    """
 
     type: Literal["water"] = pd.Field("water", frozen=True)
     name: str = pd.Field(frozen=True, description="Custom name of the water with given property.")
diff --git a/flow360/component/simulation/operating_condition/operating_condition.py b/flow360/component/simulation/operating_condition/operating_condition.py
index 47ed17ab0..bb56002dc 100644
--- a/flow360/component/simulation/operating_condition/operating_condition.py
+++ b/flow360/component/simulation/operating_condition/operating_condition.py
@@ -520,6 +520,19 @@ def flow360_reynolds_number(self, length_unit: LengthType.Positive):
 class LiquidOperatingCondition(Flow360BaseModel):
     """
     Operating condition for simulation of water as the only material.
+
+    Example
+    -------
+
+    >>> fl.LiquidOperatingCondition(
+    ...     velocity_magnitude=10 * fl.u.m / fl.u.s,
+    ...     alpha=-90 * fl.u.deg,
+    ...     beta=0 * fl.u.deg,
+    ...     material=fl.Water(name="Water"),
+    ...     reference_velocity_magnitude=5 * fl.u.m / fl.u.s,
+    ... )
+
+    ====
     """
 
     type_name: Literal["LiquidOperatingCondition"] = pd.Field(