Preferably at least four woven nylon screens are employed as {HEAD ~ the filter elements} in a nylon housing, {TAIL ~ the filter elements} in the direction of flow successively having screen sizes of about 200 μ, 50 μ, 20 μ and 10 μ 
Preferably at least four woven nylon screens are employed as { HEAD ~ the filter elements } in a nylon housing , { TAIL ~ the filter elements } in the direction of flow successively having screen sizes of about 200 μ , 50 μ , 20 μ and 10 μ
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH