@@ -0,0 +1,151 @@
+"""Test the ZHA valve platform."""
+
+import pytest
+from zigpy.profiles import zha
+from zigpy.zcl.clusters import general
+
+from tests.common import (
+    SIG_EP_INPUT,
+    SIG_EP_OUTPUT,
+    SIG_EP_PROFILE,
+    SIG_EP_TYPE,
+    create_mock_zigpy_device,
+    join_zigpy_device,
+)
+from zha.application import Platform
+from zha.application.gateway import Gateway
+from zha.application.platforms import EntityStateChangedEvent
+from zha.application.platforms.valve import BaseValve, ValveEntityState
+from zha.application.platforms.valve.const import ValveDeviceClass, ValveEntityFeature
+from zha.zigbee.device import Device
+
+
+class FakeValve(BaseValve):
+    """Valve entity that only opens and closes."""
+
+    _unique_id_suffix = "fake"
+    _attr_device_class = ValveDeviceClass.WATER
+
+    _closed: bool | None = None
+
+    @property
+    def is_closed(self) -> bool | None:
+        """Return if the valve is closed."""
+        return self._closed
+
+    async def async_open_valve(self) -> None:
+        """Open the valve."""
+        self._closed = False
+        self.maybe_emit_state_changed_event()
+
+    async def async_close_valve(self) -> None:
+        """Close the valve."""
+        self._closed = True
+        self.maybe_emit_state_changed_event()
+
+
+class FakePositionValve(FakeValve):
+    """Valve entity that reports and sets its position."""
+
+    _attr_reports_position = True
+    _attr_supported_features = (
+        ValveEntityFeature.OPEN
+        | ValveEntityFeature.CLOSE
+        | ValveEntityFeature.SET_POSITION
+    )
+
+    _position: int | None = None
+
+    @property
+    def current_valve_position(self) -> int | None:
+        """Return the current position of the valve."""
+        return self._position
+
+    async def async_set_valve_position(self, position: int) -> None:
+        """Move the valve to a specific position."""
+        self._position = position
+        self.maybe_emit_state_changed_event()
+
+
+@pytest.fixture
+async def zha_device(zha_gateway: Gateway) -> Device:
+    """Return a joined device to attach valve entities to."""
+    zigpy_device = create_mock_zigpy_device(
+        zha_gateway,
+        {
+            1: {
+                SIG_EP_INPUT: [general.Basic.cluster_id, general.OnOff.cluster_id],
+                SIG_EP_OUTPUT: [],
+                SIG_EP_TYPE: zha.DeviceType.ON_OFF_OUTPUT,
+                SIG_EP_PROFILE: zha.PROFILE_ID,
+            }
+        },
+    )
+    return await join_zigpy_device(zha_gateway, zigpy_device)
+
+
+def create_valve_entity(zha_device: Device, entity_class: type[FakeValve]) -> FakeValve:
+    """Create a valve entity on the first endpoint of a device."""
+    endpoint = zha_device.endpoints[1]
+
+    return entity_class(
+        endpoint=endpoint,
+        device=zha_device,
+        cluster=endpoint.zigpy_endpoint.in_clusters[general.OnOff.cluster_id],
+    )
+
+
+async def test_valve_state(zha_device: Device) -> None:
+    """Test the state of a valve that only opens and closes."""
+    entity = create_valve_entity(zha_device, FakeValve)
+    state_changes: list[EntityStateChangedEvent] = []
+    entity.subscribe_state(state_changes.append)
+
+    assert entity.PLATFORM == Platform.VALVE
+    assert entity.primary_weight == 10
+    assert entity.device_class == ValveDeviceClass.WATER
+    assert entity.supported_features == (
+        ValveEntityFeature.OPEN | ValveEntityFeature.CLOSE
+    )
+
+    state = entity.state
+    assert isinstance(state, ValveEntityState)
+    assert state.device_class == "water"
+    assert state.reports_position is False
+    assert state.current_position is None
+    assert state.is_opening is None
+    assert state.is_closing is None
+    assert state.is_closed is None
+    assert state.supported_features == (
+        ValveEntityFeature.OPEN | ValveEntityFeature.CLOSE
+    )
+
+    await entity.async_close_valve()
+    assert entity.state.is_closed is True
+
+    await entity.async_open_valve()
+    assert entity.state.is_closed is False
+    assert len(state_changes) == 3
+
+    with pytest.raises(NotImplementedError):
+        await entity.async_set_valve_position(50)
+
+    with pytest.raises(NotImplementedError):
+        await entity.async_stop_valve()
+
+
+async def test_position_valve_state(zha_device: Device) -> None:
+    """Test the state of a valve that reports its position."""
+    entity = create_valve_entity(zha_device, FakePositionValve)
+
+    state = entity.state
+    assert state.reports_position is True
+    assert state.current_position is None
+    assert state.supported_features == (
+        ValveEntityFeature.OPEN
+        | ValveEntityFeature.CLOSE
+        | ValveEntityFeature.SET_POSITION
+    )
+
+    await entity.async_set_valve_position(40)
+    assert entity.state.current_position == 40
@@ -0,0 +1,94 @@
+"""Valves on Zigbee Home Automation networks."""
+
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+import dataclasses
+
+from zha.application import Platform
+from zha.application.platforms import BaseEntityState, PlatformEntity
+from zha.application.platforms.valve.const import ValveDeviceClass, ValveEntityFeature
+
+
+@dataclasses.dataclass(frozen=True, kw_only=True)
+class ValveEntityState(BaseEntityState):
+    """State for valve entities."""
+
+    reports_position: bool
+    current_position: int | None
+    is_opening: bool | None
+    is_closing: bool | None
+    is_closed: bool | None
+    supported_features: ValveEntityFeature
+
+
+class BaseValve(PlatformEntity, ABC):
+    """Abstract base class for ZHA valves."""
+
+    PLATFORM = Platform.VALVE
+
+    _attr_primary_weight = 10
+    _attr_device_class: ValveDeviceClass | None = None
+    _attr_reports_position: bool = False
+    _attr_supported_features: ValveEntityFeature = (
+        ValveEntityFeature.OPEN | ValveEntityFeature.CLOSE
+    )
+
+    @property
+    def state(self) -> ValveEntityState:
+        """Return the state of the valve."""
+        return ValveEntityState(
+            **super().state.__dict__,
+            reports_position=self.reports_position,
+            current_position=self.current_valve_position,
+            is_opening=self.is_opening,
+            is_closing=self.is_closing,
+            is_closed=self.is_closed,
+            supported_features=self.supported_features,
+        )
+
+    @property
+    def supported_features(self) -> ValveEntityFeature:
+        """Return supported features."""
+        return self._attr_supported_features
+
+    @property
+    def reports_position(self) -> bool:
+        """Return True if the valve reports its position."""
+        return self._attr_reports_position
+
+    @property
+    def current_valve_position(self) -> int | None:
+        """Return the current position of the valve: 0 is closed, 100 is open."""
+        return None
+
+    @property
+    def is_opening(self) -> bool | None:
+        """Return if the valve is opening."""
+        return None
+
+    @property
+    def is_closing(self) -> bool | None:
+        """Return if the valve is closing."""
+        return None
+
+    @property
+    @abstractmethod
+    def is_closed(self) -> bool | None:
+        """Return if the valve is closed."""
+
+    @abstractmethod
+    async def async_open_valve(self) -> None:
+        """Open the valve."""
+
+    @abstractmethod
+    async def async_close_valve(self) -> None:
+        """Close the valve."""
+
+    async def async_set_valve_position(self, position: int) -> None:
+        """Move the valve to a specific position."""
+        raise NotImplementedError
+
+    async def async_stop_valve(self) -> None:
+        """Stop the valve."""
+        raise NotImplementedError
@@ -0,0 +1,19 @@
+"""Constants for the valve platform."""
+
+from enum import IntFlag, StrEnum
+
+
+class ValveDeviceClass(StrEnum):
+    """Device class for valves."""
+
+    WATER = "water"
+    GAS = "gas"
+
+
+class ValveEntityFeature(IntFlag):
+    """Supported features of the valve entity."""
+
+    OPEN = 1
+    CLOSE = 2
+    SET_POSITION = 4
+    STOP = 8