... lever operated wafer butterfly valve without pindouble half shaft without pin:prevent potential leakage and shear off of the pinFlange Drilling ... /316,AL-BRONZE C954Seat: NBR ( Buan-N), EPDM, VITON, PTFEShaft & Pin: SS410, SS416, SS304, SS316Actuator: Lever, Worm Gear, Pneumatic and Electric ... :ISO9001CE 1 inch hand lever operated wafer butterfly valve without pin