Valve Question

[tessiers]

I realize the valve is larger than I need however the grapple option is not available on the smaller valves I have looked at. It is quite important to me to have the grapple valve as convenient as possible. I actually looked for a valve with the grapple function by twisting the lever, kind of like a 3 spool joystick. I use the grapple option a lot and the convenience of it is way more important to me than feathering. Also if I buy the suggested valve I would have to add a second valve for the grapple function and with the associated power beyond fittings and hoses the cost is about the same. We plow, scrape, and move bales all the time and they all require grapple functions, and move manure as well, none of which require much finess. Actually nothing about me and machinery is about finess, or any other work for that matter, kind of like the proverbial bull in the china shop.

 

[disney]

I know this is an older (inactive) tread, but raises a question for a project I will soon be working on. My power beyond that I will be inserting the loader 'control style' valve block inline with is rated for 16.x gpm, so therefore don't I basically have to go with the 25gpm valve, because the 10 & 14 gpm units are too small?

I am looking at the same 3 spool 25gpm unit that is discussed in this post. Use will be primarily for TnT so, if it goes too fast maybe I can create a restriction just prior to the couplers, but then the TNT hoses are only 1/4" so maybe that will be enough?
Thanks for any input.

 

[J_J]

The max GPM is when the engine is ran at max rpm.

Most people do not run engine at max, and therefore, a smaller valve say the 14 GPM might work for you.

You want to stay as close to the output volume as possible.

If you use a valve that is way large, you will be at max flow before the lever is fully opened.

You can use needle valves to control flow.

 

[MtnViewRanch]

I know this is an older (inactive) tread, but raises a question for a project I will soon be working on. My power beyond that I will be inserting the loader 'control style' valve block inline with is rated for 16.x gpm, so therefore don't I basically have to go with the 25gpm valve, because the 10 & 14 gpm units are too small?

I am looking at the same 3 spool 25gpm unit that is discussed in this post. Use will be primarily for TnT so, if it goes too fast maybe I can create a restriction just prior to the couplers, but then the TNT hoses are only 1/4" so maybe that will be enough?
Thanks for any input.

You can get 17GPM valves, and no the 1/4" hoses are not enough to slow the "T&T" set down enough for easy adjustments. The size of your restrictors depends on what size your cylinders are to get the proper speed for them. Or get the adjustable flow valves.

 

[disney]

...The size of your restrictors depends on what size your cylinders are to get the proper speed for them...

OK. I understand the orifice size depends on cyl. size, but are the orifice ?bodies? only avail for certain fitting types (sae/orfs/pipe/jic) and/or sizes (-4,-6-,8,-10etc)?

 

[J_J]

Orifices come is different versions.

Washer type with a hole in it. You can make your own.

Fitting designed with a specific orifice.

Best way would be to use a needle valve and adjust to suit the operation.

 

[MtnViewRanch]

OK. I understand the orifice size depends on cyl. size, but are the orifice ?bodies? only avail for certain fitting types (sae/orfs/pipe/jic) and/or sizes (-4,-6-,8,-10etc)?

The ones that I have seen are all NPT, 1/4", 3/8" ,1/2" and you can get them blank and drill out whatever size you want-need.

 

[J_J]

Orifice does not depend on cyl size.

Orifice size simply allows a certain amount of fluid to flow based on GPM.

Have you observed a pressure washer at idle, it will put out so much water and pressure. rev the engine and volume and pressure will build based on the orifice size. Put the bleach orifice in and notice the difference.

The time for a cyl to fill will be dictated by cyl size.

https://www.google.com/search?q=hyd...a=X&ei=w8qqVNnmAca0ggSfvIGYCA&ved=0CAYQ_AUoAQ