Australian Pipeline Valve - Installation, Operation and Maintenance Manual
4
LINED BUTTERFLY VALVES - MODEL 2014 & 2016 SERIES
DURING OPERATION BEAR IN MIND THE FOLLOWING WARNINGS:
a- The internal parts of valves (disc, stem, seat) shall be handled with care avoiding scratches or surface
damage.
b- All tools and equipment for handling and supporting the internal parts shall be coated with soft
materials.
c- Seat & seals can include Viton, EPDM, Buna & Teflon hence high temperatures will damage sealing
components.
d- Never part open valve, or part close valve must be fully open of fully closed else seats will be
damaged. If valves are used to throttle it must be done at very low pressures and for very short
periods. As a result of constant throttling, the life of the valve will be shortened. Even then do not
throttle unless clean fluids, less than 30% open or more than 70% closed, or venturi action will still
cause immediate seat damage.
For all operations make reference to position number on part list of the applicable as-built drawing (an
indicative drawing is shown in Figure 11 & 12). This is a general drawing only, for more accuracy refer to
the as built drawings supplied with the order.
1 . 0 S T O R A G E
a- If storage in the field for a long time before installation is necessary, it is suggested to put valves in a
dry and/or covered place. In this case the packaging and end covers integrity is especially important.
b- All the valves are supplied with special plastic ends to cover and protect the internal parts. We
recommend you do not remove them during storage period.
c- Valves should be left in open position (unless actuated and set fail closed).
1.1 PERIODIC MAINTENANCE DURING STORAGE
In case of extended storage, the valves must be inspected and maintained as follows:-
• External surfaces must be inspected to ensure no damage to flange faces, paint finish etc.
• Without any disc movement, the internal surface of the valves must be inspected to check the complete
absence of dust, rust and foreign matters.
• After cleaning and lubrication the disc must be operated (close/open complete stroke).
• The disc must be kept in the full open position.
• The end of the valve must be protected using the same end covers.
• Touch up any surface paint loss as required. If stored in a salt air environment then keep in sealed bags.
• Lined valves do not always have an indefinite shelf life. Dry, hot climates and moisture can all effect
valve’s workings and even the liner itself. Without periodic use it is also possible some deformation
could occur.
