When storing the valves prior to installation, the following conditions
shall be met:
1.1 In a covered area free from dust.
1.2 The valves shall be stored in the open position
1.3 The valves shall either be stored in their original packaging
or stood on shelves, or in clean boxes free of any contamination,
which could damage the lining. The flange protectors should be
left in place at all time when in storage.
1.4 When the original packing is used for storage, care should
be taken to avoid excessive stacking of the boxes.
The packing cases should be handled by means of trucks, pallet
trucks belts or chains. The use of hooks, which may pierce the
packing and damage the valve linings, should be avoided.
and Start-up Conditions.
2.1 Before installing the valves in the pipeline, drain and clean
the mating flanges to avoid damaging the valve by swarf, grit,
weld splatter etc.
a) Remove the plastic flange protectors.
b) Check that the valve internals appear clean and free from obvious
c) Clean, and if necessary blow-dry with clean air, the inside
of the valve.
d) Clean the mating faces of the valve and the pipe with appropriate
The KLBC ball check valves do not require any routine maintenance.
If after a period of use leakage occurs down the line, this is generally
owing to wear to the PTFE ball
This leakage can be eliminated by replacing the ball following the
procedure described below.
Because KLBC ball check valves are likely to be handling corrosive
or hazardous liquids, it is important that the valve is fully decontaminated
prior to dismantling, and that it is free from any residual vapour.
Do not use steam
to decontaminate the valves.
Maintenance of the KLBC ball check valves should be carried out
on a clean working surface, free of dust, swarf, or other particles,
which could damage the PFA lining of the valve parts.
It should be maintained in a clean state.
No special tools are required for the maintenance of KLB ball valves.
Operators will require a set of spanners for dismantling the valves
and a torque wrench to set the body bolts at the correct torque