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  • Users: Doppe
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  1. Doppe

    Ceramic Spool/Cage Interface Info for Water Valves

    Is anyone knowledgeable about the interface between the Ceramic Spool and Ceramic Cages of 3/2 Spool Valves used in water industry? I'm trying to find an economical starting point for :- 1) typical clearance between Spool and Cage 2) typical tolerancing used on Spool diameter and Cage bore 3)...
  2. Doppe

    Clearance between Ceramic Spool & Ceramic Cage

    I'm trying to find out the clearance that would typically be used between the Spool and Cage of a Ceramic 3/2 Spool Valve that would be used in water service of upto about 300PSI. The Spool OD is 10mm at the moment. The ports in the Cage(Sleeve) are 2mm Diameter with the Spool "Over-Lapping" by...
  3. Doppe

    Methods of "machining" springs ...

    I'm needing to have manufactured a double start, rectangular section, variable pitch and possibly variable thickness/width coil spring to achieve a "progressive" spring rate spring. Does anyone have any experience/ability in this area? Note: I am aware of the capabilities of Heli-Cal and their...
  4. Doppe

    Solid Modeling of new springs ...

    Does anyone out there use SolidWorks 2005 and an FEA package to model and analyse new coil spring designs? Which FEA package are you using and how successful has this method been? I'm wanting to design double start rectangular section variable pitch coil springs but not sure which is the best...

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