This workshop provides a total in-depth insight into valve and actuator technology covering: control valves, check valves, shut-off valves, solenoid valves, and pressure relief valves. A methodology is presented to ensure the optimum selection of size, choice of body and trim materials, components, and ancillaries. Whilst studying both liquid and gas valve sizing, delegates will also learn the correct procedures for calculating the spring 'wind-up' or 'bench set'. Maintenance issues also include: testing for dead-band/hysteresis, stick-slip and non-linearity; on-line diagnostics; and signature analysis. Throughout the workshop, participants will learn through active participation using exercises, questionnaires, and practical sessions covering: systems choice; basic sizing calculations; computer-based sizing; and maintenance diagnostics.
Facilities, chemical, electrical, instrumentation, maintenance, and mechanical engineers and technicians involved in designing, selecting, sizing, specifying, installing, testing, operating and maintaining shutoff, pressure relief, and control valves
You will Learn:
- Compare the major technologies used in the final control element
- Calculate the valve flow coefficient Cv
- Perform flow and system pressure head loss calculations
- Contrast the different types of control, shut-off, and check valves
- Describe the principles of cavitation control and noise reduction
- Select optimum materials of construction to avoid corrosion and erosion
- Identify the correct requirements for trim selection
- Differentiate between inherent and installed characteristics
- Identify ANSI/DN pipe sizes and pressure ratings
- Explain the control valve seat leakage classifications
- Evaluate the optimum valve-actuator combination
- Apply on-line valve testing and diagnostics for deadband and hysteresis, stick-slip and non-linearity
- Examine the principles of preventive maintenance through the application of signature analysis
- Perform a bench set and calculate actuator spring wind-up
- Pick the correct positioner using our set of guidelines
Course Content:
- Defining the valve flow coefficient, Cv
- Choked flow
- Pressure recovery
- Flashing and cavitation
- Cavitation control
- Noise reduction
- Control valve selection and sizing
- Water hammer
- Valve seat leakage classifications
- Packing/stuffing box requirements
- Globe valves
- Gate valves
- Pinch valves
- Diaphragm valves
- Ball valves
- Butterfly valve
- Plug valve
- Check valves
- Inherent vs. installed characteristics
- Body selection guide
- Trim selection guide
- Actuator and accessory selection
- Manual and computer-based valve sizing
- I/P converter
- Diaphragm actuators
- Cylinder/piston-type actuator
- Electro-hydraulic actuation
- Electric actuator
- Solenoid valves
- Transfer mechanisms
- Valve positioners
- Valve testing and diagnostics
- Bench Set
- Valve maintenance and repair
- Safety relief valves
- Rupture discs
