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Hydraulic pressure cap

IceHole · 2024-03-07 17:37

Trying to source a cap for a 30 gallon tank that has a ~5psi relief instead of free venting. Cap is the type with a basket filter to fill, though I could weld that up and use something else. Any ideas?

Replies14
  1. #1cfherrman2024-03-07 19:00

    Have you done the math of how much force 5 psi is on the tank first?

  2. #2IceHole2024-03-07 23:15

    Should be fine, tank is 3/16" and baffled. It's a square roughly 20x20 and 2ft tall On a firewood processor so gets lots of dirt and dust.

  3. #3crane operator2024-03-07 23:34

    My link belts use a pressurized hyd. system, I'll take a picture of their set up tomorrow, and see if they have a part # on them.

  4. #4Coaldust2024-03-08 01:56

    IDK, man. That sounds like a sketch idea. Call Kenny Logins, cause’ you are headed to the danger zone. The return side of the circuit won’t like that very much. I think the return filter is going to explode. Perhaps, try a combo cap/filter if contamination is the concern.

  5. #5Coaldust2024-03-08 02:02

    BTW, your Anchorage branch sells hydraulic reservoir breather filter conversion kits specifically designed to solve this problem. We sold a bunch of this product to the mines for their bulk lube storage. Air Sentry Desiccant Breathers | ForFluids Protect equipment from moisture & dust! Air Sentry desiccant breathers. www.forfluids.com

  6. #6IceHole2024-03-08 02:09

    I've never seen one before.

  7. #7IceHole2024-03-08 02:10

    Nah, filter bypasses well above 5 psi.

  8. #8cfherrman2024-03-08 07:59

    That's only 2000 pounds of force, on one side. Good luck with the bomb your making. Return filters often run at 40 psi so I don't think that's a issue.

  9. #9terex herder2024-03-08 08:05

    My hoe has a pressurized hydraulic system, but I think its less than 5 lbs. You really don't need 5 lbs, just non-vented, correct? What will you do to relieve vacuum when the tank cools?

  10. #10IceHole2024-03-08 14:37

    There's millions of bombs all over the place then.

  11. #11IceHole2024-03-08 14:38

    Correct. 5 psi is fairly standard. Pressurized tanks are common on equipment.

  12. #12JLarson2024-03-08 16:16

    We run the filter/dryer caps with the desiccant on a lot of outdoor stationary equipment. Put the small npt ones on gear boxes outside too.

  13. #13cfherrman2024-03-08 17:32

    W/ data plates with psi ratings and are round.

  14. #14IceHole2024-03-08 17:51

    No, and square.