PEnum_ValveOperation

BACnet MVD

#### 7.5.4.200 PEnum_ValveOperation

Natural language names

Constants

Name | Description
--- | ---

DROPWEIGHT

| Drop Weight | A valve that is closed by the action of a weighted lever being released, the weight normally being prevented from dropping by being held by a wire, the closure normally being made by the action of heat on a fusible link in the wire

FLOAT

| Float | A valve that is opened and closed by the action of a float that rises and falls with water level

HYDRAULIC

| Hydraulic | A valve that is opened and closed by hydraulic actuation

LEVER

| Lever | A valve that is opened and closed by the action of a lever rotating the gate within the valve

LOCKSHIELD

| Lock Shield | A valve that requires the use of a special lockshield key for opening and closing, the operating mechanism being protected by a shroud during normal operation

MOTORIZED

| Motorized | A valve that is opened and closed by the action of an electric motor on an actuator

PNEUMATIC

| Pneumatic | A valve that is opened and closed by pneumatic actuation

SOLENOID

| Solenoid | A valve that is normally held open by a magnetic field in a coil acting on the gate but that is closed immediately if the electrical current generating the magnetic field is removed

SPRING

| Spring | A valve that is normally held in position by the pressure of a spring on a plate but that may be caused to open if the pressure of the fluid is sufficient to overcome the spring pressure

THERMOSTATIC

| Thermostatic | A valve in which the ports are opened or closed to maintain a required predetermined temperature

WHEEL

| Wheel | A valve that is opened and closed by the action of a wheel moving the gate within the valve

OTHER

| (other) | Value is not listed.

NOTKNOWN

| (unknown) | Value is unknown.

UNSET

| (unset) | Value has not been specified.

References: Pset_ValveTypeCommon

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