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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Demonstrate knowledge of the operation and maintenance of flow control and air valves in pipelines 
SAQA US ID UNIT STANDARD TITLE
254104  Demonstrate knowledge of the operation and maintenance of flow control and air valves in pipelines 
ORIGINATOR
SGB Water Sector 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Civil Engineering Construction 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 4  NQF Level 04  4 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2026-06-30   2029-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
The qualifying learner will be able to:
  • Explain the purpose of a control valve.
  • Maintain control valves.
  • Explain the purpose of an air valve.
  • Maintain air valves.

    This will enable the learner to work on an urban or rural water reticulation project and contribute towards the effective maintenance of a water reticulation system for communities. Achieving this unit standard will enhance the employability of the qualifying learner and provide the learner with specialized knowledge and skills. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    It is assumed that learners are already competent in the following:
  • Communication at NQF Level 3.
  • Mathematical Literacy at NQF Level 3.
  • Knowledge of operation and maintenance of water reticulation systems.
  • Report writing skills. 
    		•

    UNIT STANDARD RANGE 
    Personal protective:
  • Gloves, goggles, overalls, boots, mask, earplugs, helmet, equipment torch, breathing aids, gumboots.
  • As per specific outcome range statements. 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Explain the purpose of a control valve. 
    OUTCOME RANGE 
    Pressure reducing, pressure sustaining relief of back pressure, reservoir control. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Different types of control valves are identified. 
    ASSESSMENT CRITERION RANGE 
    Globe, axial.
     

    ASSESSMENT CRITERION 2 
    The operation of a control valve are described according to work place policies and procedures. 
    ASSESSMENT CRITERION RANGE 
    Include but not limited to upstream and downstream pressure, diaphragm, pilot.
     

    ASSESSMENT CRITERION 3 
    Different applications and location of control valves are identified. 

    SPECIFIC OUTCOME 2 
    Maintain Control valves. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Problems are Identified in accordance with workplace procedures. 
    ASSESSMENT CRITERION RANGE 
    Worn diaphragm, faulty gauge, leaking seal, worn spindle, calibration, cavitations.
     

    ASSESSMENT CRITERION 2 
    Parts are repaired and replaced as per specifications and job requirements. 

    SPECIFIC OUTCOME 3 
    Explain the purpose of an air valve. 
    OUTCOME RANGE 
    Vacuum breaking, high volume air discharge, pressurized air discharge, surge and water hammer alleviation. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    An explanation of how air enters a pipeline and what the effects thereof are is made. 
    ASSESSMENT CRITERION RANGE 
    Open sources, pump stations, pressure and temperature variations.
     

    ASSESSMENT CRITERION 2 
    Different types of air valves are identified. 
    ASSESSMENT CRITERION RANGE 
    Non kinetic, semi kinetic and true kinetic.
     

    ASSESSMENT CRITERION 3 
    Describe the operation of an air valve. 

    ASSESSMENT CRITERION 4 
    Describe where air valves are located. 
    ASSESSMENT CRITERION RANGE 
    Peaks, change in gradient, long ascents and descends, long horizontal stretches.
     

    ASSESSMENT CRITERION 5 
    Describe different functions performed by air valves. 
    ASSESSMENT CRITERION RANGE 
    Vacuum breaking, high volume air discharge, pressurized air discharge, surge and water hammer alleviation.
     

    SPECIFIC OUTCOME 4 
    Maintain air valves. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Problems are identified in accordance with work procedures. 
    ASSESSMENT CRITERION RANGE 
    Sticking floats, broken float, leaking seals, worn seat, dirty seat, corrosion, calibration.
     

    ASSESSMENT CRITERION 2 
    Parts are repaired and replaced as per work procedures and equipment specifications. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant ETQA according to the ETQA`s policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments at exit points of the qualification, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described both in individual unit standards as well as the integrated competence described in the qualification. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Learners should have a knowledge and understanding of:
  • Occupational Health and Safety Act, including the use of personal protective equipment and safety equipment.
  • The principles of control and instrumentation.
  • Maintenance procedures and specifications of air and flow control valves. 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems in which responses display that responsible decisions using critical and creative thinking have been made. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team, group, organisation, and community.

    Assessment Criteria:
  • Gather information on the functionality of equipment in the system. 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Plan, organize and manage oneself and one's activities responsibly and effectively.

    Specific Outcome:
  • Planning to maintain air and flow control valves. 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information.

    Specific Outcome:
  • Do fault-finding on air and flow valves. 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematical and/or language skills in the form of oral and/or written presentation.

    Specific Outcome:
  • Communicate regarding the functionality and maintenance of flow control and air valves. 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically, showing responsibility towards the environment and health of others.

    Assessment Criteria:
  • Apply diagnostic techniques during problem solving of air and flow control valves. 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation.

    Assessment Criteria:
  • Demonstrate an understanding of there implication of the malfunctioning of instrumentation in the system. 
    		•

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    Integrated Assessment:

    When conducting assessments, assessors must ensure that they are familiar with the full text of the unit standards being assessed. Assessors must ensure that the assessment covers the specific outcomes, critical cross-field outcomes and essential embedded knowledge by developing assessment activities and tools, which are appropriate to the contexts in which the learners are working. These activities and tools may include self-assessment, peer assessment, formative and summative assessment. It may be more effective and efficient to assess a number of unit standards together in an integrated way, thus reducing the overall number of assessments and ensuring that commonalities that exist between a numbers of unit standards are captured in a way that makes sense for assessment.

    Assessment Option:

    Learners could be assessed using the following methods:
  • Oral or written questions.
  • Direct observation.
  • Simulation.
  • Evaluation of reports. 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  60189   Further Education and Training Certificate: Wastewater and Water Reticulation Services  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  EWSETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    1. CHILUTSI TRADING ENTERPRISE 
    2. EMANZINI STAFFING SOLUTIONS (PTY) LTD 
    3. ERGO MAPHELONG INSTITUTE (PTY) LTD 
    4. ERWAT 
    5. K-BONENG CONSULTING SERVICES (PTY) LTD 
    6. KGWEBISWANO SUPPLIES & SERVICES 
    7. PROGRESSIVE SCHOOL OF BUSINESS AND ENGINEERING (PTY) LTD 


    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.