Hydraulic Valve Sizing Question

   / Hydraulic Valve Sizing Question #1  

Gordon Gould

Super Member
Joined
Apr 1, 2007
Messages
6,658
Location
NorthEastern, VT
Tractor
Kubota L3010DT, Kubota M5640SUD, Dresser TD7G Dozer
My L3010 has a 7 GPM hydraulic capability. If I was going to choose between a 8 GPM max or 20 GPM max single spool dual acting valve to control my grapple would one be better choice than the other? Independent of size and cost. Thanks.
 
   / Hydraulic Valve Sizing Question #2  
It does not matter as long as the valve is rated equal to or greater than the pump output.
I would choose the 8gpm unit because it is probably physically smaller and easier to mount than the 20gpm valve.
 
   / Hydraulic Valve Sizing Question #3  
The 20 GPM valve might also not respond so well on "feathering".....feathering works better if the valve flow rating corresponds to the pump flow....using a way over sized valve, will be like trying to fill a little shot glass with water using a fire hydrant valve....
 
   / Hydraulic Valve Sizing Question
  • Thread Starter
#4  
Thanks for the info. Sounds like all good reasons to go for the 8 GPM unit.

gg
 

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