In March 2016, LESER have introduced their latest construction for API-safety relief valves: The Balanced Piston Design. Now, LESER have launched new API safety relief valves with new materials for bonnet spacers. So far those bonnet spacers were made of bar stock 1.4408/316L, in the future they will 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.
