Message: | Fischer comes from a Spanish hydraulic equipment manufacturing company and is an experienced purchaser. Unexpectedly, the hydraulic pilot operated relief valves purchased last year made him depressed for more than 1 month. In August last year, the sales of one of their hydraulic power units was not satisfactory, and there were several complaints about unstable supply and pressure. The problem is that the angle error of the inner cone of the hydraulic pilot operated relief valve is large. The original manufacturer of the hydraulic pilot operated relief valves advised that this is an individual problem. But after replacement with new one, there are more and more complaints. The boss was very angry and requested Fischer to purchase a new batch of hydraulic pilot operated relief valves for replacement within 45 days. Fischer contacted with many hydraulic cartridge valve manufacturers and required that the angle error range of the cone inside the sleeve of the hydraulic pilot operated relief valves must be 100% controlled within ± 0.08 °. However, 1 week has passed and no one of these hydraulic valve manufacturers is willing to accept the order. Fischer was depressed and worried.
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