1. Storage
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.

2. Installation 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 contamination.
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 solvents.

3. Maintenance & Repair.
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.
Important: decontamination.
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.

3.1. Maintenance Area.
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.

3.2. Tooling.
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 on re-assembly

4. Dismantling The Valve.

a) Place the valve on a clean surface.
b) Loosen body bolts and remove adaptor from body.
c) Remove the PTFE ball

5. Assembly of The Valve.

a) Place all the valve parts on a clean surface.
b) Place the new PTFE ball into the body.
c) Locate the adaptor into the body.
d) Insert the body bolts and finger tighten.
e) Tighten body bolts in an even cross tightening sequence with a torque wrench
(as shown in table 1.)

Table 1.  Type KLBC Body Bolt Tightening Torques
Size Dimensions Torques Nm
0.5" & 0.75" 4 x M10 40
1" 4 x M10 40
1.5" 4 x M12 40
2" 4 x M12 40
3" 6 x M12 60
4" 6 x M12 60

6. Valve Protection.
Following maintenance fit the plastic flange protectors to protect the lining. Flange protectors should be fitted at all times in storage and should be removed only when the valve is installed into the pipeline.

7. Condition of Spare Parts.
When overhauling Kenway type KLBC ball check valves, only parts in good condition should be used. Any parts showing evidence of cuts, scratches, abrasions or deformation, which may be detrimental to the smooth operation or tightness of the valve, should be rejected.

8. Guarantee.
As described above, the overhaul of the Kenway type KLBC ball valve is a simple process. However, it should be carried out by skilled personnel experienced in such operations. Site maintenance shall be carried out under the sole control of the site personnel, and shall not be the responsibility of Kenway (Valves) UK Ltd.

9. Contacts.
For original replacement parts or if you have any technical questions, please contact our sales staff on.
Tel: 01509 508131       Fax: 01509 505485      Email: sales@kenwayvalves.co.uk