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Fisher 3590 Valve Positioner Manual ((free)) -

Thoroughly clean pipelines to remove scale or debris before installation. Use thread sealant paste

Pneumatic pressure for valve plug travel (7/16 to 4-1/8 inch) 5 PSIG higher than upper range limit of input; Max 50 PSI Action Field-reversible (Direct or Reverse) Operating Temp -40°F to 150°F (-40°C to 66°C) Installation & Maintenance Summary fisher 3590 valve positioner manual