hose flow rate?

[MrZukerman]

I have a kubota tractor with a 8.5 gallon flow rate, I am adding a third function valve off the power beyond port and was wondering if it would be OK to use 1/2" I.D. hose or if 3/8 would be better. I have access to the 1/2" for nothing were as I'd have to buy 3/8".

 

[sallymander]

I have a coulple of implments that flow 22 gpm though 1/2" hose.
Either size will work for you.
Free is always good but 3/8" is easier to bend.

 

[Eric_Phillips]

Bigger never hurt unless it wont make the bend. I think you will be pushing the limit on 3/8" but either DHH or Surplus Center has a chart.

 

[Transit]

½ inch is the way to go. The inside diameter of the hose is ½ inch and the end fittings ID will be 3/8 inch , an 1/8 inch less. If you use 3/8 ID hose the end fitting will be 1/8 less or ¼ inch.

 

[RickB]

ｽ inch is the way to go. The inside diameter of the hose is ｽ inch and the end fittings ID will be 3/8 inch , an 1/8 inch less. If you use 3/8 ID hose the end fitting will be 1/8 less or ｼ inch.

Not sure what your answer is based on. Either diameter will flow 8 GPM without issue.
Sallymander's answer is best here.

 

[J_J]

Size does not necessarily indicate bend-ability. You could have a 3/8 in hose that is very stiff, and a 1/2 hose that is very flexible, based on numbers of wire braid, hose material, etc. When you purchase a hose, you need to specify what you want. Most any fitting will reduce the flow rate somewhat. It could even increase the velocity, if the pump can maintain the flow in GPM's. Hoses are also selected by the heat range. If you use the wrong hose, the life if the hose will diminish. If you tell the hose guy the pressure and flow rate, he will sell or build you a hose assembly, hopefully. If you say I want a 1/2 hose this long with JIC-F 1/2 with 3/8 JIC-M fittings, he will make you a hose. However you might get a sticker shock if he makes up a hose with the best hose/fittings he has.

Anyway, you all know you can use just about any hose as long as it will fit, however you limit yourself on sound knowledge or just ignore good old common sense about somethings. Sometimes you just get lucky.

Rules are rules, but sometimes there is a better way to do things.

 

[kennyd]

There is a flow chart HERE

 

[dfkrug]

I have a kubota tractor with a 8.5 gallon flow rate, I am adding a third function valve off the power beyond port and was wondering if it would be OK to use 1/2" I.D. hose or if 3/8 would be better. I have access to the 1/2" for nothing were as I'd have to buy 3/8".

There are as many as 5 hoses you are dealing with here. If your new valve
is installed between the PB port of your FEL valve, and the IN port of your
3-pt, then you will need a valve with PB, and oil will flow constantly through
it. I would lean toward 1/2" hoses here to reduce oil heating. The work
ports of your new valve may be used for intermittant flow, so 1/4" hoses
may be OK and even preferred there. But if your work ports will be
constant flow, as for a hyd motor, you may want to move up in size. The
new valve's return to the hyd reservoir should be the same size as your
IN and PB hoses.

 

[J_J]

MrZukerman,

Since you have 1/2 hose, use it. It would be better to have less restriction in the system anyway. If you use QD's use one size larger for full flow.