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...
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.
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...
[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.
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.
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.
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...
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...
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...
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...
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...
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.
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...
