Need to drop pressure

[Wayne County Hose]

I went to the link for your hydraulic unit. Now somebody help me out here if you know more than I do, it's been a little while since I had one of these units apart. Look in the larger picture of the unit. You see a large dark Hex looking thing coming out of the valve body, between the motor and the tank. I think that's the pressure relief adjustment. Remove the cap and unscrew the thingy a couple turns and measure max pressure. In is more pressure, out is less. Oh, put the cap back on before you energize. I hate hydraulic oil showers and I'm sure you do too. Good luck, Andy.

 

[Mith]

I believe there is a difference in thread between British metric thread fittings and BSP fittings. Most likely you have BSP though.

 

[Wayne County Hose]

I believe there is a difference in thread between British metric thread fittings and BSP fittings. Most likely you have BSP though.

I've never heard of a "British" metric thread. It may exist. Any British thread I have seen is not measured in the metric system.

But, you never know. They are discussing metric flat face fittings over in the Chinese tractor section which I have never heard of or seen until I saw that post.

 

[Mith]

I know there is a metric system of hydraulic fittings. I have been avoiding them so I dont know much about them, I assumed they were British, but could be from the east, as I say, not sure, I just stick to BSP for ease of keeping everything the same.

 

[Wayne County Hose]

I actually like BSP, except for the cost. I think it's the most single versatile fitting out there. I found that it can be used anywhere except in place of Code 62 and Cat flange.

 

[Mith]

Making leak free connections on valve bodies in particular can be a pain, but other than that they are hassle free.

BSP adaptors seem to be cheaper here than JIC and NPTF.

 

[bones1]

Thanks for the ID.I was guessing British.I'll find some fittings online and see I can remove the cover on the relief valve.Thanks again.

 

[3RRL]

Steve,
I just bought one of these to reduce pressure to my Mile Marker hydraulic winch. Although it's minimum is 1500psi, you might search for something like this for further reduction of pressure down to your needs?
Surplus Center Item Detail

 

[bones1]

Thanks Rob.I'll take a look at them when I get to that point.Andy, The cylinders were BSP thread as we suspected.Couldn't find any adapters online but the local auto store had 1/8-27 US pipe x1/8-28 British oil pressure gauge adapters made of steel.Worked perfect.I just need to come up to 1/4 pipe from there. Also these fittings have a smaller hole, about 3/16 diameter in them.Should I drill them out larger or maybe use them as my flow/pressure restrictors??Would that work?? Now on to the mock-up.

 

[Wayne County Hose]

Okay bones, I'm going to let you know my secret place for odd ball fittings. It's a company called Tompkins. They have the adaptors you need to go from your BSP to whatever you want. Whatever Weatherhead doesn't make, I go to Tompkins for. Their website is Stockmeup.com.

You need more of a restriction than that to slow your cylinders down. Tompkins has them. They are also just flow restrictors, not pressure reducers. Pressure is reduced by porting fluid back to the tank at a predetermined psi. Flow is reduced by restriction.

One thing you want to be sure of is if you have BSPP or BSPT. Parallel pipe or tapered pipe. I think by looking at your cylinders, you have tapered pipe. Making sure you have the correct one is important.

Tompkins part #'s are, JIC-BSPP is 3800, JIC-BSPT is 3404, all male by male.
Restrictors, JIC-NPT is RST2404, Pipe swivel union is RST1404.
You then have the dash sizes after the part #. Let me know how you do.