NZQA registered unit standard
22901 version 2
Page 1 of 3
Title
Demonstrate knowledge of pumps, fans, and valves for mechanical
engineering trades
Level
3
Credits
Purpose
3
This unit standard is for use in training of mechanical
engineering trades, and covers knowledge of operating
principles, components, and operational problems of pumps
and valves used in engineering.
People credited with this unit standard are able to demonstrate
knowledge of pumps, fans, and valves for mechanical
engineering trades.
Classification
Mechanical Engineering > Maintenance and Diagnostics in
Mechanical Engineering
Available grade
Achieved
Explanatory notes
None.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of pumps for mechanical engineering trades.
Evidence requirements
1.1
Pumps are identified and their principles of operation described with the aid of
given diagrams.
Range
1.2
Major pump components are identified.
Range
1.3
gear, reciprocating (piston), diaphragm, centrifugal, multistage,
submersible.
casing, inlet, outlet, rotor, impeller, bearings, seals.
Common pump operational problems are described, with reference to
symptoms, causes, and remedial actions.
Range
Competenz
SSB Code 101571
cavitation, aeration, leakage, vibration, mountings, misalignment,
bearings failure, clogged line, clogged impeller, loss of prime.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22901 version 2
Page 2 of 3
Outcome 2
Demonstrate knowledge of fans for mechanical engineering trades.
Evidence requirements
2.1
Fans are identified and their principles of operation described with the aid of
given diagrams.
Range
2.2
Major fan components are identified.
Range
2.3
axial, centrifugal.
housing, inlet or vortex, outlet, blades, bearings.
Common fan operational problems are described, with reference to symptoms,
causes, and remedial actions.
Range
corrosion, leakage, vibration, misalignment, bearings failure,
noise.
Outcome 3
Demonstrate knowledge of valves for mechanical engineering trades.
Evidence requirements
3.1
Valves are identified and their principles of operation described with the aid of
given diagrams.
Range
3.2
Major valve components are identified.
Range
3.3
ball, butterfly, gate, globe, diaphragm, check, relief, safety.
hand wheel, stem, packing, bonnet, disc, gate, ball, diaphragm,
seat.
Common valve operational problems are described, with reference to
symptoms, causes, and remedial actions.
Range
Planned review date
Competenz
SSB Code 101571
leakage, stiffness, jamming, erosion.
31 December 2016
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22901 version 2
Page 3 of 3
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
20 June 2006
31 December 2014
Review
2
15 April 2011
N/A
Consent and Moderation Requirements (CMR) reference
0013
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMRs). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact Competenz qualifications@competenz.org.nz if you wish to suggest
changes to the content of this unit standard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016