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This Concept Map, created with IHMC CmapTools, has information related to: Regeneration, Regulatory (DP61) Functionality Assures that the pressure on the sterile product side, PT61B, is higher than the pressure on the hot water loop regen side, PT61A, Product Backpressure (V78), PC78 Purpose Maintain required product backpressure on regen section of main heat exchanger, Product Backpressure (V78), PC78 Controls V78 air pressure output is adjustable by various methods depending on the system: Typically IP converter, Product Backpressure (V78), PC78 Functionality V78 uses supplied pneumatic pressure to achieve the counter product pressure in the process flow, Regeneration Works with Product Backpressure (V78), PC78, Product Backpressure (V78), PC78 Controls PC78, can provide PID control or a fixed analogoutput to V78, Regulatory (DP61) PMO PMO guard is > 1 PSI, Regeneration Works with Regulatory (DP61), Regulatory (DP61) Controls PT61A andPT61B are monitored by DPT61, differential pressure, Regulatory (DP61) Purpose Monitors the differential pressure across the regen section of the main heat exchanger, Regulatory (DP61) Controls Box generating the“DP61 OK” signal, which then goes to the Legal Box for control of Flow Diversion Valves sequence logic