Australian Pipeline Valve - Installation, Operation and Maintenance Manual
5
API6D THROUGH CONDUIT EXPANDING GATE VALVE - AP400-405 SERIES
DURING OPERATION BEAR IN MIND THE FOLLOWING WARNINGS:
a- The graphoil packing and body gasket is very brittle: any twisting or bending shall be avoided.
b- The internal parts of valves (gate, stem, seats) shall be handled with care avoiding scratches or surface
damage.
c- All tools and equipment for handling and supporting internal critical sealing parts shall be coated with
soft materials.
d- Seats & seals usually include Viton, Devlon, Nylon & Teflon, hence high temperatures and some
chemicals will damage sealing components.
e- Never part open valve, valve must be fully open of fully closed or else the seats will be damaged.
For all operations make reference to position number on part list of the applicable drawing. The drawing
in the Appendix is a general drawing only, for more accuracy refer to the as-built drawings supplied with
the order.
SCOPE OF INSTALLATION ACCORDING TO THE TYPE OF FLUID
(DANGEROUS FOR THE ENVIRONMENT OR HUMAN HEALTH)
Group 1 Classification
- Current stem packing materials should be specified by the user for the range of products included in
Group 1.
- The use of valves without additional safety devices in Group 1 will be the responsibility of the user or
the purchaser, as well as the advisability of installing leakage detection systems.
Group 2 Classification
- Carbon steel valves will not be used in corrosive fluid lines.
1 . 0 P R E S E R V A T I O N & S T O R A G E
1.1 STORAGE
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 the open position (unless actuated and set fail closed).
1.2 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. In case of
the presence of rust and/or damaged painting, the area must be cleaned by brushing, degreasing &
repainting.
