REFINING Pump Recirculation Valve with Dirty Service Trim Eliminates Erosion, Plugging RESULTS • Trim design enables multi-stage pressure drop and eliminates cavitation, noise, and vibration. • Valve with DST delivers two years of trouble-free service. DST provides a protected seat design where the shutoff function of the trim is separate from the throttling areas. The trim’s design does not allow any significant pressure drop to be taken until the fluid is downstream of the seating surface. With this trim design, all clearance flow is subjected to a staged pressure drop. Unlike the linear cage-style anti-cavitation trim sets, there are no flowing conditions where pressure can go directly from P1 to P2. APPLICATION Bypass Flow Control CUSTOMER Oilsands producer in Alberta, Cana

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