Overhaul & reconditioning

Exhaust valve bodies

Reconditioning exhaust valve bodies restores seat tightness and proper operation of the cooling water circuit, which is often obstructed around the crown and inlet openings.

Procedure

1. 1Cutting and removal of the valve seat, revealing obstructions in the water circuit.
2. 2Thorough cleaning of the obstructed passages.
3. 3Welding of a new seat with Stellite applied to the body.
4. 4Compatibility analysis between the new seat material and the original body.
5. 5Determination of welding parameters and of heat treatments before and after the operation.
6. 6Metal spraying of sensitive wear zones to prevent metal erosion.
7. 7Rigorous checks against the original specifications.

Certifications

• Procedures approved by Lloyd's Register

All work is documented in a detailed report handed over to the customer.