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Suppa Principala

Technical condition requirements for removed main valves

1. The core must have a legible manufacturer number.

2. The index of the returned core must match the index of the purchased final product.

3. The core must have a Knorr or Wabco nameplate, cores from other manufacturers will not be accepted.

4. The core must not have mechanical damage caused by improper maintenance or disassembly of the old part: e.g. impacts, cuts, grinding, breakage, browning.

5. Returns must be complete, assembled, with no traces of disassembly or modification. No screwed or pressed-in parts, e.g. electronics, compression piston rods, plugs - unacceptable.

6. The core must not be heavily corroded behind the outer part of the housing, casting.

7. The returned core must not show any signs of excessive oxidation on the outside of the housing, casting.

8. Returns must not show any signs of excessive damage caused by excessive use or improper operation.