Sierra Valve School is a Training Center/academy developed by Sierra Engineering & Manufacturing that provides multiple training courses and programs to support stakeholders and organizations working in the Field of Water, Wastewater & Irrigation, e.g, The Holding Company for Water and wastewater and its 25 subsidiary governmental water companies, as well as the New Urban Communities Authority, Consultants, Contractors, and Technical Secondary Schools for Water and Sanitation.The Training Courses will cover the whole Valve production cycle starting by metal cast Pouring, quality and inspection of molten metals (alloy is more suitable), the machinig processes, surface preparation/powder coating, Valves assembly, hydrostatic testing and Valves Simulation at Sierra’s Hydraulic LabWe invite you to visit our Manufacturing Facilities to get more information about Sierra Valve School
In a rapidly changing environment, continuous training is a mandatory to improve everyday work performance and develop further skills and competencies. Sierra engineering andmanufacturing provides different training programs/workshops to enhance its stakeholders and organizations performance, and improve their knowledge in the field of engineering, installation, maintenance, commissioning of different types of valves, e.g. isolation, check air and control valves
Training Programs
Isolation vs control valves
Check valves
Automatic control valves
Air valves
Material casting, pouring and quality control
Valves machining, coating, assemblyhydrostatic testing
Maintenance and commissioning
Isolation vs control valves
Program content
- What are the isolation valves types?
- what is difference between isolation, throttling and control valve?
- Where to use isolation, throttling and control valve?
- Inherent flow characteristics of different valve types
- Cavitation in valves and its effect on internal valve components
- Main isolation valve types (eccentric vs concentric butterfly valves)
- Eccentric, double, and triple eccentric butterfly valves
- Eccentric or concentric butterfly valves? Where to use?
- Actuation of butterfly valves (sizing and selection)
- Design features Shall you expect on butterfly valves
- How to size a butterfly valve for an application
- Butterfly valve coefficient (Kv, Cv) and valve resistance coefficient
- Eccentric plug vs gate valves
- Inherent flow characteristics of eccentric plug valves
- Design features Shall you expect on eccentric plug valves
- Actuation of eccentric plug valves (sizing and selection)
- How to size a butterfly valve for an application
- Types of gearboxes and machining of gears
- Assembly of gearboxes (tour in gearbox assembly facility)
Check valves
Program content
- Water hammer or hydraulic transient and check valve slamming
- Different types of check valves
- Selection criteria of check valves
- Non-slam characteristics
- Rapid vs slow closure check valves
- Advantages and disadvantages of traditional swing check valves
- Tilting check valves and effect of counterweight on headloss
- Swing flex heck valves for sewage application and its advantages over swing check valves
- Rapid closure characteristics and non-slam nozzle check valves
- Combined check valves for water and sewage applications
- Critical element of check-valve sizing
- Dynamic Characteristics of Check Valves
- Relation between check valves and water hammer phenomenon
Automatic control valves
Program content
- Inherent valve flow characteristics of valves
- Cavitation in valves
- Hydraulically Actuated Automatic Control Valves definition
- How does ACV working?
- What is the pilot Valve?
- Different designs for pilot valves according to the application
- Classifications of automatic control valves
- Network control valves (PRV – PSV – FLV)
- Double function automatic control valves
- Network protection valves (Presser relief, pump control and pipe bursting valves)
- Level control valves (modulating – Non modulating float and altitude valves)
- Application examples of automatic control valves
- Sizing of automatic control valves
- Testing different function on our ACV test bench
- Adjusting and calibration of ACV
Air valves
Program content
- Sources of air in pipelines
- Problems Attributed to Air
- Functions of air valves in pipelines
- Air release valves, air vacuum valves and combination air valves
- Locating air valve along pipeline and recommends air valves points along a pipeline
- Typical installation of air valves (water / sewage)
- Difference between old (double ball) and new generations kinetic air valves
- What is double orifice three functions automatic air valve?
- Kinetic air valves vs. non-kinetic air valves
- Limitation of non-kinetic air valves
- Kinetic water air valves
- Vacuum breaker air valves
- Anti – shock combination water air valves
- Water column separation and pressure surge
- Swage air valve
- Difference between water and sewage air valves
- Anti – shock combination water air valves
- How to choose Air valves for large pipelines
- Sizing of air valves
Material casting, pouring and quality control
Program content
- introduction to design of patterns
- Patterns fundamentals, 4 axis CNC routers for patterns making
- Sand casting technology basics
- Ductile vs grey cast irons
- Difference between grey iron grades, GG15,20,25 and 30
- Difference between ductile cast iron grades GGG40/12, 50/7 and 60/3
- Quality control of melting and pouring of ductile cast iron valves
- Effect of alloying elements on the mechanical properties of ductile cast iron
- Control of inputs (row materials), scrap, alloying elements and additives of ductile cast iron
- Mechanical properties and micro-structure of ductile cast iron
- How can you test valves material in site?
- Factory tour on different casting, pouring and quality control departments
Valves machining, coating, assemblyhydrostatic testing
Program content
- Machining of patterns on CNC routers
- Machining of different parts body, disc, shafts, seating mechanism and CNC machining
- Welding of body seat with 316 stainless steels
- Assembly of small and middle range valves
- Assembly of large valves
- Assembly of automatic control valves and pilot system
- Assembly of gearboxes
- Disassembly of different valves and handling of valve parts
- Assembly of PRV, PSV,FLV float and altitude pilots for automatic control valves
- Assembly and disassembly of electric and pneumatic actuators
- Hydrostatic testing of valves acc.to EN12266
- Shell testing on our special testing machines acc. To EN standard
- Seat testing on our special testing machines acc. To EN standard
- Quality control procedures of machining, assembly, and hydrostatic testing
- Surface preparation of ductile cast iron parts
- Powder coating of valve parts
- Liquid vs powder coating and advantages of each
- Quality control and main testing method of coated surface
- Factory tour for machining, coating, assembly, and hydrostatic testing departments
Maintenance and commissioning
Program content
- How to maintain of butterfly valves (eccentric and concentric types)?
- How to adjust butterfly valve sealing and gearbox opening and closing?
- How to maintain gearboxes?
- How to maintain of check valves (tilting, swing flex and nozzle check valves) ?
- How to maintain water and sewage air valves?
- How to commission and startup automatic control valves?
- How to maintain automatic control valves and pilot system?
- Handling, installation, and operation of different types of valves
- How to adjust electric actuators
- How to adjust pneumatic actuators