Hydraulic Valve Question
Needle flow control type? Knob actuated?
Inline flow control that’s hexagonal shaped?
Inbuilt check valve? Pilot operated ?
Remote mounted or part of a valve stack?
I’ll consult my Vickers / Rexroth literature but I’ve no idea what you mean.
What does it look like shape wise?Posted 4 years ago
I’ve been asked to investigate different styles of hydraulic valves for use by a customer.
One of the styles that has been discussed, I can’t find any info on, not helped by no-one knowing what its called. So I’ll describe it:
Imagine a length of rubber hose with fluid flowing through it. If you twist it (and constrain it correctly) it will twist tighter and tighter, restricting and finalling stopping flow, depending on the flexibility of the rubber and the viscosity etc of the fluid. A bit like making party balloon animal.
Apprently, they’re used in the oil industry on surprisingly big pipes. Anyone know what I’m talking about?Posted 4 years agoThe PinksterSubscriber
Would it be a constrictor valve?
Like this? http://www.freepatentsonline.com/7007914-0-large.jpg
Would have posted it as an image but it’s way too big.Posted 4 years agocheekyboyMember
I `ve worked on hydraulics in the past, mainly on systems on ships, one of the main properties of a hydraulic system is that the hydraulic medium is incompressible. Most hydraulic systems use rigid pipework where possible, flexible pipework is only fitted where necessary, flexible pipes are normally made up of several layers of rubber encasing a steel braid inner armour, this would make the action of twisting the pipe to create a restriction rather impractical and quite hard to do in terms of mechanical actuation, there are plenty of other methods of restricting flow commonly available.Posted 4 years ago
I do recall an inline flow check valve fitted on warships that was adjusted by twisting the outer collar, this was however made of solid steel.
More than happy to learn something new if what you are asking for actually exists, keep us posted.JohnClimberSubscriber
Does anyone from the above thread live in the south central area of England?
I work for a PVC hose manufacturer, so I’ve no idea about the valves above (sorry) but in the next 6 to 12 months we will need a sales rep with this sort of fluid power experience who lives along the M4 corridor.
Email me in my profile name link if you’re interested.Posted 4 years ago
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