Along with LESER’s March introduction of its latest construction for API-safety relief valves, the Balanced Piston Design, the company most recently launched the latest optimization for API safety relief valves. LESER will gradually switch to new materials for bonnet spacers. Bonnet spacers, traditionally made of bar stock 1.4408/316L, will now be made of the cast material 1.4408/CF8M. This change only applies to all valve sizes of Types 5264, 5263 and 5267.
Besides the material change, LESER has also adapted and optimized the design. The shielded bellows as protective function encasing the bellows is still available after the conversion.