1. Construction 
	 As the core of the filter, it is the
filter element which performs the actual filtration and/or dewatering
function in the housing.
 They consist of several pleated filtration and support layers which
are placed as a cylinder around or inside the stabilizing support
tube. These mesh packs are sealed by the endcaps. 
	
 Regardless of the type of filter, flow direction through the filter
elements is from out to in.
 Depending on the filter material, the filter mesh pack is encased in
an additional outer plastic sleeve. 
	
 
	2. Description 
	Direction of flow---------------------------from
out to in 
	Element description---------------------with or
without valve 
	Element type-------------------------------D, R 
	
 
	3.Advantages 
	High contamination retention capacity 
	High pressure stability values 
	Good flow fatigue strength 
	Low initial differential pressure 
	Low…