Connect-Under-Pressure, Breakaway Quick Connect

[Luke'sScreenName]

One of my 3rd function quick couplers failed and needed to be replaced. So I decided to look a break-away option because I have come close to accidentally dropping front implements with the hydraulics attached.

I change implements frequently and currently had to turn off the tractor to relieve pressure and cycle the elctro diverter. I also have to constantly fight to keep the QDs clean as I do a lot of dirt work with the loader.

I came across this Parker product which normally sells for $280 but Blain's Farm and Fleet has it for $130 somehow.

Pioneer Lever Coupler Kit at Blain's Farm & Fleet

-Push or pull one handed to connect or disconnect (ISO 5675 2way mounted couplers).
-Built in shut-off ball valves.
-Built-in sealed automatic dust covers with gaskets to keep out dirt even when connected.
-A drain hole to weep the small amount of hydraulic fluid that escapes with disconnects.
-A clamp bar

It's really slick.

I had to bed the clamp bar to about 80deg for my application.



It was super easy to install (1/2" NPFT).



While I was at it I switched my plugs to a pressure-relief design to relieve pressure build up in my implements line due to temperature swings. You can see the little pre-valve ob the very tip of the poppet (we'll see it these fail easier). But no more fighting the residual pressure ever!

This is definitely a luxury set-up but man is it nice!

 

[varmint]

Thanks- all very interesting, and looks like a great idea, especially for someone like yourself, often changing attachments. I hadn't seen those plugs with the pre-relief feature. Cool. Hopefully, they shouldn't give you any problems. These are not "break-away" or am I missing something??

 

[Luke'sScreenName]

Yes, yank on a hose and it disconnects and seals.

 

[lennyzx11]

One of my 3rd function quick couplers failed and needed to be replaced. So I decided to look a break-away option because I have come close to accidentally dropping front implements with the hydraulics attached.

I change implements frequently and currently had to turn off the tractor to relieve pressure and cycle the elctro diverter. I also have to constantly fight to keep the QDs clean as I do a lot of dirt work with the loader.

I came across this Parker product which normally sells for $280 but Blain's Farm and Fleet has it for $130 somehow.

Pioneer Lever Coupler Kit at Blain's Farm & Fleet

-Push or pull one handed to connect or disconnect (ISO 5675 2way mounted couplers).
-Built in shut-off ball valves.
-Built-in sealed automatic dust covers with gaskets to keep out dirt even when connected.
-A drain hole to weep the small amount of hydraulic fluid that escapes with disconnects.
-A clamp bar

It's really slick.

I had to bed the clamp bar to about 80deg for my application.

View attachment 478134

It was super easy to install (1/2" NPFT).

View attachment 478135

While I was at it I switched my plugs to a pressure-relief design to relieve pressure build up in my implements line due to temperature swings. You can see the little pre-valve ob the very tip of the poppet (we'll see it these fail easier). But no more fighting the residual pressure ever!

This is definitely a luxury set-up but man is it nice!

View attachment 478136

Luke are these relief valve coupler halves also from Blains?
Lenny

 

[lennyzx11]

Luke are these relief valve coupler halves also from Blains?
Lenny

Never mind I found it on there also.
Thanks.

 

[Luke'sScreenName]

I saw some a TSC too.

 

[hal2001]

My samurai hedge trimmer arrived and the dealer is willing to attach a 3rd function valve on my 2007 Kubota B7800. However he is quite a ways from here and I think I have the skills to install it myself. I just need detailed instructions on how to go about it. Any help is always appreciated. Hal

"I may not do good work, but I sure am slow!"

 

[Industrial Toys]

I have those relief valves on the aux circuit of my deere but never understood them. There is a small hole, that I have never seen a drop of oil come out (not that the tree huggers at deere would allow that). So how do they work?

 

[Luke'sScreenName]

Deere's may function differently but these have a secondary, smaller valve within the popet itself with a smaller surface area (so more PSI when you push on it with the female QD). It relieves enough pressure to depress the larger poppet valve.

 

[Industrial Toys]

I thought the handle I see in the picture was the pressure relief method. That's what the dealer told me, as I have two of these valves on the 3rd function. My rear couplers are those hellishly complicated (no collar to retract) type. Just press in.