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  • Users: PetroChef
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  1. PetroChef

    Automax actuator and H-4000 positioner

    Thanks for the replies; I did finally get a start on it by finding similar actuators on the web, and surmising the operation. As I said, I had NO information to start with. Turns out to be a Scotch Yoke, Air-to-Spring, Heavy-Duty Actuator. The Flowserve site did not help, mainly because I...
  2. PetroChef

    Automax actuator and H-4000 positioner

    Jim; Thanks for your help; the link did, of course, lead to the spec sheets for this actuator.
  3. PetroChef

    Automax actuator and H-4000 positioner

    Thanks for the replies; I did finally get a start on it by finding similar actuators on the web, and surmising the operation. As I said, I had NO information to start with. Turns out to be a Scotch Yoke, Air-to-Spring, Heavy-Duty Actuator. The Flowserve site did not help, mainly because I...
  4. PetroChef

    Automax actuator and H-4000 positioner

    Where can I find technical reference material for an Automax model R312PSR80 actuator? It is being used here with a butterfly valve on a 24" line. The positioner is an Automax H-4000 with 4-20 I/P and 3-15psi output. Specifically, I need maintenance data to troubleshoot, test and prove...

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