Regulator
A self-operating control valve for pressure and temperature control
Pressure regulator
An adjustable valve that is designed to automatically control the pressure downstream of the regulator
Loading mechanism, primary element, control element
3 basic components of most regulators?
Spring-loaded pressure regulator
A regulator consisting of a throttling element such as a valve plug connected to a pressure sensing diaphragm that is opposed by a spring and contained in a single housing
Droop
A drop in pressure below a set value
Lockup
An increase in pressure above set value
Air loaded pressure regulator
A regulator that uses air pressure instead of the force of a spring to oppose downstream pressure
Pilot operated pressure regulator
A regulator that uses upstream fluid as a pressure source to power a diaphragm of a larger valve
Pilot operated pressure regulator
Can be either external or internal to the main valve
Pressure relief regulator
A regulator that limits the pressure upstream of the regulator
Backpressure regulator
A regulator that maintains the pressure upstream of the regulator to a specified value
Temperature self operating regulator
A regulator that is used to automatically control a process to a defined temperature
Damper
An adjustable blade or set of blades used to control the flow of air
Parallel blade damper
A damper in which adjacent blades are parallel and move in the same direction with one another
Opposed blade damper
A damper in which adjacent blades are parallel and move in opposite directions from one another
Round blade damper
A damper that has a circular blade designed to fit into round ductwork
Actuator
A device that provides power and motion to manipulate the moving parts of a valve or damper used to control fluid flow through a final element
Diaphragm and spring actuator
An actuator consisting of a large diameter diaphragm chamber with a diaphragm backed by a plate attached to the actuator stem and opposed by the actuator spring
Direct acting actuator
An actuator that extends the shaft when air is applied
Reverse acting actuator
An actuator that retracts the shaft when air is applied
Pneumatic sliding stem piston actuator
An actuator where the movement of a piston replaces the action of the diaphragm and a balancing air pressure replaces the function of the spring
Spring return solenoid actuator
A piston or diaphragm actuator with an internal spring to force the actuator shaft to one end of its travel
Double acting solenoid actuator
A piston actuator that has an air connection at each end of the piston and does not contain a spring to allow for known failure position
I/P Transducer
Converts an electrical signal, 4-20ma, to a pneumatic signal 3-15psi.
Positioner
A device used to ensure positive position of a valve or damper actuator.
All ___________________ have a feedback link from the valve shaft, providing accurate valve position information
Split range operation
A control configuration where a single control signal, 4-20ma or 3-15psi, can be directed to two throttling control valves or dampers equipped with electropneumatic positioners
Speed, power, precision, resolution
4 requirements of an actuator
Water, gas
Regulators are commonly used to control ________________ or _______________ pressure
Constantly, bleed
The air must _________________ flow to a air loaded pressure regulator and be allowed to ____________ from the spring chamber to allow the set pressure to be changed
True
Regulators require no other source of energy than the process itself (True or False)
Regulator
A self-operating control valve for pressure and temperature control
Pressure regulator
An adjustable valve that is designed to automatically control the pressure downstream of the regulator
Loading mechanism, primary element, control element
3 basic components of most regulators?
Spring-loaded pressure regulator
A regulator consisting of a throttling element such as a valve plug connected to a pressure sensing diaphragm that is opposed by a spring and contained in a single housing
Droop
A drop in pressure below a set value
Lockup
An increase in pressure above set value
Air loaded pressure regulator
A regulator that uses air pressure instead of the force of a spring to oppose downstream pressure
Pilot operated pressure regulator
A regulator that uses upstream fluid as a pressure source to power a diaphragm of a larger valve
Pilot operated pressure regulator
Can be either external or internal to the main valve
Pressure relief regulator
A regulator that limits the pressure upstream of the regulator
Backpressure regulator
A regulator that maintains the pressure upstream of the regulator to a specified value
Temperature self operating regulator
A regulator that is used to automatically control a process to a defined temperature
Damper
An adjustable blade or set of blades used to control the flow of air
Parallel blade damper
A damper in which adjacent blades are parallel and move in the same direction with one another
Opposed blade damper
A damper in which adjacent blades are parallel and move in opposite directions from one another
Round blade damper
A damper that has a circular blade designed to fit into round ductwork
Actuator
A device that provides power and motion to manipulate the moving parts of a valve or damper used to control fluid flow through a final element
Diaphragm and spring actuator
An actuator consisting of a large diameter diaphragm chamber with a diaphragm backed by a plate attached to the actuator stem and opposed by the actuator spring
Direct acting actuator
An actuator that extends the shaft when air is applied
Reverse acting actuator
An actuator that retracts the shaft when air is applied
Pneumatic sliding stem piston actuator
An actuator where the movement of a piston replaces the action of the diaphragm and a balancing air pressure replaces the function of the spring
Spring return solenoid actuator
A piston or diaphragm actuator with an internal spring to force the actuator shaft to one end of its travel
Double acting solenoid actuator
A piston actuator that has an air connection at each end of the piston and does not contain a spring to allow for known failure position
I/P Transducer
Converts an electrical signal, 4-20ma, to a pneumatic signal 3-15psi.
Positioner
A device used to ensure positive position of a valve or damper actuator.
All ___________________ have a feedback link from the valve shaft, providing accurate valve position information
Split range operation
A control configuration where a single control signal, 4-20ma or 3-15psi, can be directed to two throttling control valves or dampers equipped with electropneumatic positioners
Speed, power, precision, resolution
4 requirements of an actuator
Water, gas
Regulators are commonly used to control ________________ or _______________ pressure
Constantly, bleed
The air must _________________ flow to a air loaded pressure regulator and be allowed to ____________ from the spring chamber to allow the set pressure to be changed
TRUE
Regulators require no other source of energy than the process itself (True or False)