Case Study 4 Temperature Fluctuations Dropped from 10oC to within 2oC Reduced product defects through stabilization of secondary pressure. Industrial Rubber Product Rubber Chains, Footwear Equipment Name Multi-stage Press Operation Batch operation Model Name COS-16 Operation Primary Pressure 0.8 MPaG Set Pressure 0.5 MPaG Number of years in service From 19 Years Ago Production Management Division, Group Leader said:In the past, the main problem we had with non-TLV PRVs was that secondary pressure was unstable, which led to temperature fluctuations of the presses and resulted in reduced product quality. In particular, this became glaringly apparent when we first switched to the once-through type boiler we are now using. At set pressures of 0.02 - 0.03 MPa, temperature fluctuations of around

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