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3/4 hydraulic line replaced with 5/8

Applachian

Member
Joined
Mar 22, 2025
Messages
14
Location
Roanoke VA
Adding a valve within my extendahoe circuit. This valve is only available in -10 (5/8). Will sending my circuit flow through this choke point be ok. The extendahoe is on a 580SL2 (max 37 gpm relief at 3000)

I wouldn’t consider it on a more heavily used circuit but was slay with a little slow movement here. Will this change even be noticeable? Or a lot?

I may make any required new lines 5/8 for convenience.
 

Tinkerer

Senior Member
Joined
May 21, 2009
Messages
10,154
Location
usa
What kind of valve is it, that is not available in 3/4 Inch ?
How about a 1 inch valve with bushings in it ?
 

HarleyHappy

Senior Member
Joined
Sep 30, 2020
Messages
3,386
Location
So NH
Occupation
Welder/Mechanic
Will be fine. It will also be easier and cheaper having hoses made going further.
 

Applachian

Member
Joined
Mar 22, 2025
Messages
14
Location
Roanoke VA
It’s a commonly used valve for compact tractors. It’s marketed for grapple functions, sold by summit.com. Sold in 3/8 and 1/2 as well as the 5/8. I’d be fine with any of those sizes for the backhoe thumb. But I have to send my extendahoe flow into and out of the unit 24/7, then divert to thumb when needed via selonoid and switch. Can’t find 3/4 versions.
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
13,132
Location
Northwest
Occupation
Machinery & Equipment Appraiser
It may cause a little heat and slow the function slightly. If you ware just using it on the extendahoe circuit you would never notice. You will have the use the thumb a lot before you notice something and most people don't use it to that extent on a hoe.
Good Luck
 

willie59

Administrator
Joined
Dec 21, 2008
Messages
13,930
Location
Knoxville TN
Occupation
Service Manager
For a thumb? Naa, not a problem unless you use the thumb from the moment you start the machine non-stop until you shut the machine down.
 

Applachian

Member
Joined
Mar 22, 2025
Messages
14
Location
Roanoke VA
Thanks guys, I’m going to run it on a stopwatch one last time just so I can compare the cycle times. Then move forward with the project. Consensus seems to be that any adverse effect will be negligible.
 
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