Description: Roller Operated Valve can be activated mechanically either by rotary cams or sliding cams for the supply of pilot air. It comes with sturdy construction and built-in arrangement for perfect sealing and exhaust bleed hole to let out return air. The valves have inlet and outlet connections of 1/8' and 1/4' BSP; two mounting holes of 5 mm diameter; and pressure range up to 10 kg/cm2.