Dual Filters in By-Pass FIltration System

[MolaKule]

For large Diesel engines and Industrial engines there is often two By-Pass filters mounted and properly valved.

Name at least two advantages to having 2 By-pass filters in a Dual By-Pass Filtration setup?

 

[wpod]

Takes longer for the filters to load up.

 

[ripcord]

The clue seems to be "properly valved" but I'm not sure what the answer is. Possibly related to high and reduced pressure situations?

 

[UncleDave]

Ability to Parallel (or serially) flow, longer FCI/increased capacity, increased cooling, can be redundant and valve over to be one or the other,

..let see what else.....

 

[ripcord]

I was assuming two filters in parallel at first, but if in series, the first filter can be a high capacity but with larger pore size with the second meant to catch finer particles but lower capacity.

 

[BobsArmory]

Ability to swap filters while running?

 

[twX]

Two smaller filters in parallel would perform identically to one larger filter of similar design. Some possible benefits of the smaller filters might be system packaging, better filter options, or reducing the number of different filters required throughout a plant.

For series filtration:

 

[MolaKule]

Ability to swap filters while running?

All good answers. I should have clarified that the By-Pass filters are fed in parallel, but the 'cat' is already out.

"Properly valved" was a hint that the oil feed to any one filter could be shut off and one or more filters removed and replaced while the engine is running.

Of course, two By-Pass filters would increase the total filtering capability.

By-Pass filtering uses slower oil flow (a lower pressure branch) but uses media that attempts to trap smaller particles than the 'full-flow' spin-on (cannister) filter or the cartridge filter cannot trap, particles that also contribute to wear.

 

[wpod]

Didn't say on an industrial engine. !

 

[SubieRubyRoo]

Didn't say on an industrial engine. !

Doesn’t have to be. Could be any system with liquid lubricant, these apply equally.

 

[wpod]

Doesn’t have to be. Could be any system with liquid lubricant, these apply equally.

Didn't say industrial .

 

[MolaKule]

Didn't say industrial .

I didn't have to indicate it was industrial only as it could apply to any fluid filtering system as explained above so I don't see why you are repeating yourself.