The LESER MAINTENANCE section of the website contains an extensive collection of documents on maintenance, repair and testing of LESER product groups.

You will find detailed information on the following topics:

1. Maintenance fundamentals of LESER Safety Valves
2. Repair process
3. Suggested equipment for assembling, disassembling and rework of critical parts
4. Disassembly, including sectional drawings
5. Rework of critical parts including an overview of critical dimensions
6. Assembly, including options
7. Spring charts
8. Testing procedures (set pressure and leak tests)
9. Spare parts lists
10. Guidelines for inspection, storage and transport
11. Trouble shooting