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  1. budt

    non - return valves

    Here is another companies Zero Leak Check Valve http://www.generant.com/check_valve.htm Unique deisgnn to keep the "O" Ring from getting caught up in the fluid flow. A Google search for "zero leak check valve+seal ring" brought oup several others as well. Bud Trinkel, Fluid Power Consultant...
  2. budt

    non - return valves

    I believe this valve would be considered "tight Shut-off type." http://www.kepner.com/inline_check_relief_valve.htm Bud Trinkel, Fluid Power Consultant HYDRA-PNEU CONSULTING
  3. budt

    Pneumatic logic circuit

    I'm getting more confused after receiving yor drawing. There is no "Cutter" There si a RAISE/LOWER which you've never mentioned before. TRAVERSE appears to be a Rodless Cylinder that reciprocates and has Limit Valves at both ends to shut off the WATER JET VALVE. There is a now an Air...
  4. budt

    Pneumatic logic circuit

    I must have a mental block today. I get from your writeup that the Operator shifts the Manually Operated Air Valve to make the Air Motor Rotate and Drive the Trolley Forward. When the Trolley reaches the end of its Forward travel the Operator Reverses the Manually Operated Air Valve to Return...
  5. budt

    Pneumatic logic circuit

    Not enough info to make anything but a guess. What I think you are asking for is a common circuit for a Cylinder and could be used for a Motor. What is necessary is a description of the cycle progression you want in a manner anyone can follow. I have heard, in my younger days, of stroker...
  6. budt

    Hydraulic lift system

    Here is a list of Hydraulic Lifts that should help: http://www.anefforttorecoup.com/search.aspx?qt=hydraulic%20lift Bud Trinkel, Fluid Power Consultant HYDRA-PNEU CONSULTING
  7. budt

    Regenerative hydraulic circuit

    What you are asking for is not considered a Regeneration circuit. You can see Regeneration corcuit examples here: http://www.hydraulicspneumatics.com/200/eBooks/ Look in the Fluid Power Basic link at Ch. 15 pg. 15-13 Fig's. 15-18 & 19. I would call it a Transfer circuit and oil would only...
  8. budt

    why Hollow vs full pistons in variable pumps and motors

    Instructors at another company school said they were hollow so they could expand like any hollow tube at pressure. The expansion was to make the pump more efficient since it reduced bypass as pressure increased and expanded the piston and kept a tight fit in the bore walls. I also heard that...
  9. budt

    Stripping press foundation loads

    Is this an Anode Stripping Press? There is one locally that has such a high shock level, when it strips some of the anodes, that you can hear it almost a block away and can feel it on your feet 30-60 feet away. Bud Trinkel, Fluid Power Consultant HYDRA-PNEU CONSULTING
  10. budt

    Rotary Vane Air Motors: Vane Shape?

    The Vanes could be extruded duble width and then machined by sawing or milling into separate vanes. That would allow for the end that rides the cam ring to have sharp edges for sealing or the rounded end for line contact. Bud Trinkel, Fluid Power Consultant HYDRA-PNEU CONSULTING
  11. budt

    Hydraulic schematic standards

    "For example, if you have a fuel system schematic making a connection to an engine, do most people show a simple engine symbol representing a generic but understandable connection to an engine or would you show a detailed connection to the exact type of fuel pump or filter on the engine? My...
  12. budt

    Hydraulic schematic standards

    draftsmandon: Presently, Hydraulic symbols are usually done according to International Standards Organization standars ISO 1210-1 and -2 that can be downloaded from their web site. In te Sates we have symbols offered by the Americam National Standards Institue (ANSI). These symbols are almost...
  13. budt

    LOOKING FOR ONLINE CALCULATION

    A GOOGLE search for "calculation+volume+flow+inside diameter+length+psi+sec+min+viscosity+temperature" brought up 82,700 possible answers to your question. I find GOOGLE a great help in finding any kind of information that is on the Net. www.gggogle.com/search is one of my frequently used icons...
  14. budt

    Nitrile Seal Problem

    How long were the seals setting on the shelf before using them? I have heard shelf life is important on Nitirle seal material. Bud Trinkel, Fluid Power Consultant HYDRA-PNEU CONSULTING
  15. budt

    Sequential Pneumatic Circuits

    You can also see how I show schematics for training sessions and at added cost when a customer request' them to make it easier for persons to understand how the circuit works as it progresses through a cycle. The training books also include a section with detailed explanations of the circuit...
  16. budt

    Sequential Pneumatic Circuits

    "think you meant 'actual position' and not 'actuated position' in the second paragraph." Probably would have been more clesr. "Generally, all components are shown in initial or valve neutral/off position." I always have a problem with that layout and have had to redraw the schematic showing...
  17. budt

    Sequential Pneumatic Circuits

    One other thing about the schematic you have, the symbols are all appear to be drawn right out of the catalog. Some recommend that be done for all schematics, However, for anyone not familiar with the machine it is almost impossible to decipher how the curcuit functions. I always draw the...
  18. budt

    Sequential Pneumatic Circuits

    I am trying to update a circuit from a cascade design to a one out of n sequential logic design. I have successfully created a 2 out of n but in keeping with the rest of the drill I would like it to be 1 out of n I am not familiar with "1 or 2 out on n" referece. It may be that those are...
  19. budt

    Leaking rod seals in Parker 2H and 3H hydraulic cylinders

    What do the leaking seals look like compared to seals from cylinders that run normal life? How does Rod Surface Finish compare to cylinders that have good seal life? Has there been any changes to the hydraulic circuit function? Do the cylinders run longer without leaking with the...
  20. budt

    What is this device??

    Strictly a guess, but, probably some sort of pressure control like a Counterblance Valve to retard a vertical rod down cylinder with a load that would try to make it drop when a directonal control was shifted to extend the cylinder. Some of these Pressure Control valves had an adjustin screw...

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