Two self lubricated Phosphor Bronze bearing fitted at the top & bottom of the body with s.s.ground shaft therein ensures permanent lubrication preventing valve jamming & low operating torque. Disc connected to the shaft through the conical pin prevents any back lash in the disc & driving shaft. Polyacetal Bush giving additional support with two in built "O" rings fitted at the top & bottom of body acts as secondary sealing & bearing. Notch disc at the top is provided with the hand lever for flow regulation. |