cilinder to fast

[LD1]

What it refers to is flow control and direction.

if you only install one flow control valve you
will have wide open speed flow in the opposite
direction.

That depends on the device. Most needle valves, or orifice valves will control speed in BOTH directions by using only ONE of them.

If you install it on the extend side circuit, it will restrict incomming fluid and make it slower when extending the cylinder, and it will restrict outgoing fluid when retracting and make it slower.

Same can be said if it is installed on the retract side of the cylinder.

 

[BukitCase]

What LD1 said -

But if you WANTED to make the two directions different speed, you could plumb a check valve in parallel with the needle valve/restrictor, or TWO needle valves - one in series with the check, one by itself in the parallel leg. The check valve would force flow thru the other leg of the parallel path in one direction only.

Then you could independently slow one direction more than the other.

Too involved/expensive for this particular application, I know... Steve

 

[wdchyd]

What LD1 said -

But if you WANTED to make the two directions different speed, you could plumb a check valve in parallel with the needle valve/restrictor, or TWO needle valves - one in series with the check, one by itself in the parallel leg. The check valve would force flow thru the other leg of the parallel path in one direction only.

Then you could independently slow one direction more than the other.

Too involved/expensive for this particular application, I know... Steve

They make these with the check valve built-in........called a "Flow control"......a cleaner install

 

[BukitCase]

Been looking/ordering hydraulic stuff for a couple of projects for the last month, not sure how that item escaped me Thanks for the heads up :thumbsup:

This one in particular will most likely find its way into at least one of my "dastardly plans"...

https://www.surpluscenter.com/item.asp?item=9-7960-8&catname=hydraulic

Thanks again... Steve

 

[Soundguy]

that one is near 30$

you might look at one of these check valve restrictors.. maybee not this one.. but they all cost 8.50$ in this typoe / line.

then again.. the straight restrictor orifice is about a 2$ part too.. don't need 30 extra lines and fittings to install it either.. simple things aren't always the best option.. then again.. thaey are often good enough for the application..

 

[Gary Fowler]

Whatever happened to just feathering the hydraulic lever to reduce the flow. One doesnt need to just hit the lever to the stop when applying the hydraulics. Just like operating a crane, finesse the controls rather than manhandle them and do the same thing that installing an inline orifice would do.

 

[Soundguy]

that and not having rpm screaming at max. lower rpm = reduced flow...

I will say though.. that some valves are easier to feather than others.. still.. rpm reduction helps..