Pilot Operated Pressure Reducing Valve - Part 1

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[sathishr]

At 0:24 we have a 2000 pounds held by a 10 inch area and it gives 200 psi pressure . Then how does the load move in this case when the force is balanced . Should we set the valve a little higher?

[nadeemzzz]

Hi, hope you are good. Wanted to know your views on Pressure reducing valves. When I checked, seems that they all have internal leakage through their pilot line. I mean, for a pressure reducing valve to work, the pilot line must drain oil to tank.
So if any pressure reducing valve is connected to an accumulator, it will drain the accumulator till the preset pressure is reached and pilot drain flow will stop !
Am I right? Can pressure reducing valves be used with accumulators? For example, can we have a 3 way pressure reducing valve without internal leakage?
Do we have any models of 3 way pressure reducing valves without leakage?
Does leakage happen when valve is off ?
For e.g suppose I have a 3 way proportional pressure reducing valve; when valve is off, output pressure is zero. If this valve is connected to an accumulator, will it drain all accumulator oil little by little? Will leakage occur when valve is off ?
Thanks.
Kind Regards.

[dennisparker]

Do U use a check valve with that one or it got it on

[sathishr]

Does this valve relieve the downstream pressure

[wowseries]

Please give us solenoid operated relief valve tutorial.

[ghfarmsandnurseryambattur]

which software you r using to develop these mechanisms

[pawangundariya]

If preset spring setting of reducing valve is let say 150PSI and a actuator connected at outlet of valve requires pressure more or less than 150PSI to be actuated, then how does reducing valve maitain 150PSI pressure.

[amrreda]

Can anyone explain why does the outlet piping has a smaller diameter than that of inlet to valve?
Thanks

[sathishr]

Does this hold the load if the inlet flow is switched off ?

[yxxsjzd]

How many more years should we wait for part 2? 5 years are not enough?)