The brand of material is 58-A which have test-report. All products are made by CNC and tested by air pressure before delivery. Max.Pressure:hydrostatic pressrure 30bar.Max.turn angle:90°Max.temperature:90Life test:300,000 open and close cyclesFitting method:G1/2Sealing face of ceramic disc: Hardness:1100Hv5 Flatness:0.6μMRoughness:Ra0.25μM Porosity:60-80%100% was tested by air pressure before ...
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