The Effect of By-Pass Valve Leakage on Filter Performance

Format:

Conference/Event

Author/Creator:

Tessman, R. K., author.

Conference Name:

1975 SAE International Off-Highway and Powerplant Congress and Exposition (1975-09-08 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1975

Summary:

The separation performance of a filter element used in a hydraulic system to protect critical components can be seriously degraded by permitting fluid to by-pass the filter element. Such by-pass leakage paths stem from many different causes. For example, an element that is improperly sealed within the housing will permit a portion of the inlet flow to by-pass the filter. Damaged elements are another source of possible by-pass leakage. There is one leakage path, however, which is seldom considered in a contamination control analysis - by-pass valve leakage. Such a valve is placed in a filter housing to protect the element from excessive pressure differential and is sometimes referred to as a filter relief valve.This paper develops an analytical expression which describes the influence of leakage flow on the separation performance of a filter. Actual data associated with the flow-pressure drop characteristics of both commercially available filter elements and by-pass valves are utilized to illustrate the leakage flow relative to such valves. Graphical illustrations are used to demonstrate the performance deterioration due to by-pass valve leakage

Notes:

Vendor supplied data

Publisher Number:

750846

Access Restriction:

Restricted for use by site license