Restricting the top link… advice?

[S854]

I know…I’m beating a dead horse…

I see many MANY threads referring to placing a restriction in the line… what I can’t find is the “5 buck” orifice every thread refers to…

Quite a few suppliers sell a simple, inline orifice (which would be my preference) but I’ve seen them as high a $75 for a 1/2” NPT orifice… outrageous!

I’ve check Surplus Center (recommended in many threads)… all they currently carry are the adjustable style… I don’t need that ability…

So… I’ve found a “restricted swivel”, available through ACE, but I’m wondering if it does essentially the same thing as a “one piece orifice”… I don’t need the swivel as my restriction will be screwed directly into the male part of my quick connect…

 

[npalen]

Its fairly easy to convert an existing fitting to restricted if you or a friend have a metal lathe. Its a matter of making a press fit plug drilled to about 1/32" diameter or slightly larger depending on cylinder bore size. Probably could be just a slip fit if it is captured when the fitting is assembled.

 

[setxjeff]

You mean like this. Apache 39004277 Hydraulic Adapter Steel 3/8" D X 3/8" D

I have used a few to slow down my hydraulic swivel on my 3 point straight blade And to slow top link travel.

 

[S854]

Unfortunately I don’t have access to a metal lathe… one would be handy for so many applications…

Yes on the Apache… albeit with a 1/2” thread…

Depending on the supplier there’s either a 1/32” or 1/16” restriction… which one did you get?

 

[ericm979]

1/2" hose and fittings are larger than you need for a hydraulic top link. 1/4" would be fine.

If yours has reducers after the quick connects to get the standard 1/2" ag connector down to a more reasonable size hose, I'd put the restrictor in the smaller diameter part after the reducers.

 

[setxjeff]

I use the 1/16 I also have some that are jic to jic I found them on eBay a while ago. All my hoses are 1/4: my tractor max flow is 7.5 gpm so 1/4 is fine for everything and cheaper.

 

[S854]

I had the dealer install the top n tilt prior to delivery… they used 3/8 hoses with a 1/2” male end…

 

[Engineer42]

I had the dealer install the top n tilt prior to delivery… they used 3/8 hoses with a 1/2” male end…

Taixin Hydraulic High Pressure Ball Valve 1/2'' NPT 5800PSI Hydraulic Valve Shut-Off KHB Hydraulic Ball Valve https://a.co/d/itaXUNw

 

[David in KY]

Does this look like what you need?

Apache Male Pipe Thread Female Pipe Swivel 1/16 IN Restrictor Hyd Adapter, Style 1404 1/2 IN x 1/2 IN, 39004380

Shop Bomgaars for Apache 39004380 Male Pipe Thread Female Pipe Swivel 1/16 IN Restrictor Hyd Adapter, Style 1404 1/2 IN x 1/2 IN

www.bomgaars.com

 

[ericm979]

3/8 is fine. If it was me I'd put the restrictor in the 3/8 hose just to reduce the weight and bulk of the stack of adaptors and fittings.

A ball valve is the wrong fitting for this as it does not allow for fine control of the flow. Either a fixed orifice restrictor or a flow control valve like 3/8 NPT 8 GPM Prince WFC-600 In-Line Flow Control | Prince Mfg | Brands | www.surpluscenter.com

That one is one way which may or may not be right, depending on what's needed. I have one on my loader to reduce bucket flop and three on my backhoe to make up for valves with poor control.

This one is two way: 3/8 NPT 8 GPM Needle Valve Wolverine by Prince Mfg WNV-600 | Wolverine by Prince Mfg | Brands | www.surpluscenter.com