Model Description 170-060-20 Twist-on Water Strainer 50 mesh stainless steel screen, EPDM o-ring, 1/2" Pipe inlet, 1/2" FPST* outlet, Polypropylen Body. Use adapter PN #8-145-01 for 8000 Series pumps with 3/8" NPT-Female 170-061-04 Twist-on Water Strainer 50 mesh stainless steel screen, Buna o-ring, 1/2" barb inlet, 1/2" FPST* outlet. Use adapter PN #8-145-01 for 8000 Series pumps with 3/8" NPT-Female 170-061-05 Twist-on Water Strainer 50 mesh stainless screen, Viton® o-ring 1/2" barb inlet, 1/2" FPST* outlet. Use adapter PN #8-145-01 for 8000 Series pumps with 3/8" NPT-Female 170-061-20 Twist-on Water Strainer 50 mesh stainless steel screen, Buna o-ring, 1/2" Pipe inlet, 1/2" FPST* outlet, Polypropylen Body. Use adapter PN #8-145-01 for 8000 Series pumps with 3/8" NPT-Female