Transcription of Data Sheets: Series 60 and 80 Direct Spring Operated ...
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Data Sheets: Series 60 and 80 Direct Spring Operated ...
ANDERSON GREENWOOD Direct Spring Operated pressure relief VALVESSERIES 60 AND 80 FEATURES Soft seat design provides repeatable bubble-tight performance before and after each relief cycle. Leak-tight performance near set pressure allows higher operating pressure , resulting in increased process throughput and system optimization. Easily replaceable soft seat and seals eliminate expensive, time-consuming lapping of metal components, resulting in lower long-term maintenance costs. Externally adjustable blowdown on Types 81/83 allows precise adjustment of reseat pressure without affecting set pressure adjustment. Blowdown can be adjusted with valve in service, helping eliminate the need for costly removal and/or system shut down.
ANDERSON GREENWOOD DIRECT SPRING OPERATED PRESSURE RELIEF VALVES TYPES 81, 83 VALVE OPERATION VALVE OPERATION 1. System pressure is applied at the inlet to the seat area and exerts a force on the spindle. This upward force is counteracted by the downward force of the spring (Figure 1).
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