Chromalox PQ410-4 - Manuals

C. The use of globe valves in the system. Globe valves have amuch higher pressure drop than gate valves. Therefore useglobe valves only for balancing parallel flows. D. Small inlet and outlet connections on customer’s process.Examples being: 1. The use of small rotary unions on roll applications. Th...

Note: If the expansion tank cannot be mounted above the highest point in the system, or if the system is going to operate above theboiling temperature of the heat transfer fluid, the expansion tankwill have to be pressurized with air or nitrogen. This eliminates thepossibility of heat transfer fluid...

10. OPERATING ABOVE THE MAXIMUM ALLOWABLE TEMPERATURE OF THE HEAT TRANSFER SYSTEM OR HEAT TRANSFER FLUID 11. INSUFFICIENT HEAT 12. MISCELLANEOUS PROBLEMS 13. START UP SUPERVISION DO NOT attempt to operate any heat transfer system or heat trans- fer oil at temperatures higher than those recommended b...