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Hi, I came across a hydraulic valve with 205 VDC coil recently. The coil has a connector with rectifier mounted on it. That means that the voltage applied to the coil is 230 VAC. I am wondering, why not use an AC valve with 230 VAC coils instead of valve with 205 VDC coils?

Thank you for replying. Did you mean B16.5 instead od B15.5?

Hi, Need some help to identify a flange. Attached are the photos of the flange. According to the designations I would say it could be ASME B16.5 flange with groove RTJ. Any opinion would be appreciated. Thank you.

I don't unfortunately. :(

Perhaps you could use: 21.89 x 2.62 12.42 x 1.78 Those are the standard o-rings (see page 3 below): https://www.parker.com/literature/Industrial-Systems-Division-Europe/Catalogues/Industrial%20Valves%20UK/02/Access02.pdf

Hello, Check Hydac datasheet for VP-DRP10. https://www.hydac.co.nz/media/productattach/e/_/e.5.249.8.0.01.13.pdf 2x O-Ring 25,07 x 2,62 90 Shore FKM 2x O-Ring 5,28 x 1,78 FKM Best regards, Robert

Hello, What is the difference between standard and norm? Thanks im advance.

I believe you will get less cooling power. Because the net is the restriction to air flow, just like debris and leaves. On the other hand, if the cooler is sized big enough it should work.

Hi Prometheus21, Sorry for a delay in my reply. Thank you for a very extensive elaboration.

Hi, When using connections for pressurized sir (e.g. male stud adapter) do you prefer to use PTFE tape as a Seal or Cooper washer?

Perhaps something like this: https://products.swagelok.com/en/all-products/fittings/pipe-fittings/adapters/straights/p/fitting-0066 But as TugboatEng said, wee need more info.

Thanks!

Yes, it's a general question

Yes, that would complicate calculation :)

Dear FluidPowerUser, thank you for the great reply! It took a lot of effort to write it. I have read it in detail and have some additional questions. I believe there is a typo here. I believe you meant P3/P2 = V2/V3? I am having a hard time figuring this out (945 cc). The volume difference...

Hello, I have been looking into accumulator formulas and would like your opinion on it. Let's say I would like to use an accumulator to extract a cylinder at 100 bar. What would be in that case the minimum working pressure (P1) and maximum working pressure (P2). I'm guessing the minimum would...

Hi Peter, I've just seen your post. My email sent the notification to spam. It seems to me that you are right, that all these cylinders over 320 mm are custom made. The standard which can be found in manufacturer's datasheets is ISO 6022, and I've found a link to the preview of that standard...

Could you use manufacturer's datasheets below (but it's only up to 400 mm): https://www.duplomatic.com/assets/SchedeTecniche/GB/71200.pdf http://www.petr-hanz.com/ATOS/B241-ENG.pdf http://www.utah-hydraulique.com/wp-content/uploads/2016/04/re17335_2016-01.pdf It's only up to 400 mm...

Hello, I need a help with my weld stress calculation. I have a rectangular tube supported by a rib. I have attached a hand-made drawing on the following link: https://files.engineering.com/getfile.aspx?folder=53fe3023-411a-4165-a80b-8727cfa904bf&file=Weld_problem.pdf I have a fillet weld...

Are you sure? When cylinders retract they have a non-restricted flow to filter? Or I'm wrong.