... without pins(Ductile iron+nylon coated disc)butterfly valve without pin type: prevent potential leakage and shear off of the pinOptional ... AL-BRONZE C954Seat: NBR ( Buan-N), EPDM, VITON, PTFEShaft & Pin: SS410, SS416, SS304, SS316Actuator: Lever, Worm Gear, Pneumatic and ... &Approvals:ISO9001CE DN300 hand lever operated ansi wafer type butterfly valve without pins(Ductile iron+nylon coated disc)