tripowerguy said:
Not getting into pressure but p.s.i. is equal in all directions. I'll get out my old hydraulic books and show you how a sprinkler valve works for a wet and dry system. You have at 60 lbs psi 60 lbs on every square inch of the canister or spin on filter. What Aubrey and Goodwrench are saying if you have a 4 inch round adapter being held by two 1/4 inch bolts then for every square inch there is 60 lbs. If you take pi X radius squared you get the square inches. Carrying pi out only 2 places to 3.14 you get 12.56 square inches or a total of 753.6 lbs. Like I said a sprinkler system uses this idea for water to hold back air. You have more square inches on the water side so 40 lbs of water will hold back 100 lbs of air. Like I said I need to get my books out but Ronnie Russell will back me up. All that being said I don't believe that the adapters seal good enough and bypass oil, so I use a canister. Now someone will correct me if I'm wrong.
Roy
Guys, come on now... sure, we'd have a multiplier of pressure/sq in x sq inches, IF there were no free flow in and then out of the canister or spin-on. But, there is free-flow, in and out. sixty pounds in = 60 pounds out, period. Think of it this way... you have a 1 inch square tube leading into a canister, and another one inch square tube leading out of the same cansiter. Oil under a TOTAL pressure of 60# per square in is pumping into the canister, which has an outlet which is also one inch square. Do you guys actually believe that you've somehow created a canister oil-bomb that would magically multiply the pressure in that cansiter to make it 400#/sq inch or whatever? The oil going in would flow under 60#/sq in, and the oil flowing out the 1 in square tube exactly the same (assuming reasonable unresticted flow). The amount of pressure exerted on each square inch of area is the same -- 60#, which, is the highest flow force the oil-pressure could ever have in this case. You're not going to end up having a canister with a built-up bomb-like super pressure to it, that would back up the oil-pump, or blow the canister apart!