7.5.4.200 PEnum_ValveOperation

NameDescription
DROPWEIGHT
Drop WeightA 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
FloatA valve that is opened and closed by the action of a float that rises and falls with water level
HYDRAULIC
HydraulicA valve that is opened and closed by hydraulic actuation
LEVER
LeverA valve that is opened and closed by the action of a lever rotating the gate within the valve
LOCKSHIELD
Lock ShieldA 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
MotorizedA valve that is opened and closed by the action of an electric motor on an actuator
PNEUMATIC
PneumaticA valve that is opened and closed by pneumatic actuation
SOLENOID
SolenoidA 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
SpringA 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
ThermostaticA valve in which the ports are opened or closed to maintain a required predetermined temperature
WHEEL
WheelA 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.

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