Control valves, Manual valves, Shut-down valves etc
Procurement: Procurement of control valves, manual valves, shut down valves etc that
are of non-Emerson brand.
Testing & Repair: This involves the testing and certification of all types, brands and sizes
of valves (hydro test, pneumatic test and gas test with nitrogen where applicable).
The test carried out for the valves are,
Seat leakage test: Each side of the valve seat is tested for leakage with the valve in
Shell or Cavity test: Here the valve is opened half way (50%) and tested from any side of the valve to ascertained if the valve is leaking from any part of the body, like packing body, bonnet.
Refurbishment & Retrofit:
Refurbishment: Here a failed valve is disassembled and the valve internals are inspected
for wear, tear and seal failure. Any defective part is replaced with a spare and the valve
is assembled again and tested to confirm that it is fit for use
Retrofit: This involves the modification of a valve initial assembly. It could be the
installation of an actuator on a manual valve, the installation of a component on a valve
to achieve a particular aim or objective.
Note that the part or component being added to the valve was not part of the valve
when the valve was manufactured.
Pressure Relief Valve:
Testing and Certification: This involves the testing of the relief valve pop-up pressure set
point to ascertain if the valve is properly calibrated and set or if the relief valve set
pressure has been altered or if the relief valve has malfunctioned
Repair and Certification: Malfunctioned PSV’s are stripped open, this malfunctioning could be as a result of dirt, wear and tear, non-smooth surface. The fault is rectified and the relief valve tested again for certification.
Re-kitting and Certification: This is mostly with pilot operated valves, the seals and Orings may have worn out and hence not able to hold pressure.
Valve installation, hook-up calibration and commissioning: This involves valve
installation, hook up torqueing, calibration and commissioning.
Conducting of onsite valve audit/inventory: This involves an engineer going to customer
site to carry out a site walk and gather the details of all the installed valves data base
(Manufacturer, type, model number, serial number) etc.
It also involves the inspection of the valve for leakage & damage, valve location &
ancillary equipment, inspect and assess maintenance records etc.
Mobile Test Bench: This is a containerized equipment which has a mobile valve test
bench with tools and equipment needed for valve testing and valve repair. This is
normally moved to customer site to render valve services instead of the customer
bringing their valve to the workshop. This equipment can also be Leased out to
customer on per day rate.