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  • Users: keyardee
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  1. keyardee

    Valve to control high-viscosity adhesive???

    We have used conventional ball valves in latex and rubber cement applications with good results.we have improved upon the initial trials by switching over to three piece design ball valves to facilitate easy maintanance.these valves give a clean cut off for the viscus fluids and also clear the...
  2. keyardee

    Valve Stem Friction

    Hi,jabsab In one of our applications we have just used conventional thrust bearing on the stem nut and the result was fantastic.The operating torque has come down drastically.Better try it yourself and you will appreceiate.
  3. keyardee

    Valve Stem made of Cast Bronze

    Hi,wajdi,Normally for all valve stem applications it is customary and logical to use 'wrought' products like forged, or rolled or extruded rods.These products have better grain structure and capable of withstanding repeated compressive stresses and operating torque(in case of rotating spindle...
  4. keyardee

    Spreadsheets and Access db

    Hi,plawrence! I was not aware that we can use querries on excell data. How do we do it Any information or samle data is welcome
  5. keyardee

    Nonprintable cells in Excell?

    [b]bjt is right.[b]This is the simplest way for people like us not much familier with programming and macros and vba coding. Try it. This not only helps during printing but also from prying eyes during normal times.
  6. keyardee

    seawater piping

    Hi Mathew1 I am not aware of your actual application.But if the initial cost is not a problem, then Titanium pipes will be the the ideal and ultimate.They don't conaminate nor get corroded.They are strong too. Well try them.
  7. keyardee

    How do pressure valves work?

    Hi waseem19 please make out a sketch of your piping layout indicating the inlet and outlet positions and the tank.If it not possible to include the sketch in this forum kindly contact k_ramdas41@hotmail.com along with the sketch.On understanding your piping a better solution might result.
  8. keyardee

    Welded Bonnet vs. Bolted Bonnets

    Hi eml seal welded bonnets are in vogue in petroleum industry and chemical industry.Here also the valves will be having double glands with suitable sealing fluid passing through them.(weeping glands).But in steam application the welded bonnets seem to be overspecified if not a luxury.Ultimately...
  9. keyardee

    How do pressure valves work?

    Hi waseem i am unable to configure your exact requirement.you want to protect -the tank or the pipe line.If it is the tank, better try a safety valve with sufficient capacity .If it is for the pipe, connect a surge tank of required volume to minimise if not eliminate the pressure surges. What...
  10. keyardee

    How do pressure valves work?

    Assume that you are filling a closed vessel with say compressed air through a throttling valve.If you close the valve there is no flow into the vessel and consequently no pressure rise in the vessel.If you open the valve there is flow and consequent pressure rise.Assume that you have got a...
  11. keyardee

    Submersible valves for sea water

    Hi Casten.I bet you would not have expected a response to your thread as old as two years.I chanced upon your thread- looking for submersible sea water valves-.If your requirement is still there ,go ahead.We manufacture valves for sea water applications for off shore oil rigs,desalination...
  12. keyardee

    ASME B16.34 NDE

    Hi MartonA Forget about any code or something.Use your common sense.A normal valve's integrity is checked by the "proof of the pudding"-hydro test of shell and seat.This test may or may not reveal any hidden flaw in the valve.Most of the valves inspite of these hidden flaws might work...
  13. keyardee

    High Flow/Low Pressure Relief Valve

    This custom made relief valve could be made with external pilot (electric,pnumatic ) for a variable range.Please furnish more details about the testing medium ,end connection details,set pressure accuracy range etc for further development.You may also contact propel@vsnl.com for further details.
  14. keyardee

    PSV Reaction Force

    The reaction force is maximum at the nozzle mouth because of the very high velocity of discharge.Subsequently in the downstream line the velocity comes down to a reasonable operating level subjected to the allowable back pressure acumulations.So go for the worst and support your valves against...
  15. keyardee

    Looking for 6" Pressure Reducing Valve (plastic or stainless)

    Try at" propel@vsnl.com "funishing the necessary details
  16. keyardee

    Handling air in metered potable water connections

    Hi Kanyembo Your problem is that the air is also routed through the meters and that causes unrealistic readings.Introduce a surge vessel before the meter, depending upon the service line and provide a vent point from highest point on the vessel with an air valve.Size and positioning may vary...
  17. keyardee

    High pressure on/off-valve with little operating force????

    Suitable designs can be arrived at,but requires more details of the valve size,medium of flow and connected equipmets at the upstream and downstream sides.(Water hammer problems could be severe if the closing time is really short). Please contact k_ramdas41@hotmail.com for more details.
  18. keyardee

    How to choose the best type of valve

    Hi Destroyer For similar situations involving steady constant supply and variable demand conditions existing in a typical manufacturing unit, it is a standard practice to pump the air/gas to a higher pressure and store them in a receiver before distributing to the using units through a pressure...
  19. keyardee

    Float Sizing for flow contol

    Directly controlled Float valves are slow and lethargic ones prone to problems.Try valves with pilot type float valves.The pilot could be as small as the one in the bath room and response will be far better and faster.You have one more advantage that the main valve need not be there near the...

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