Abstract: Various methods and apparatus are disclosed herein for securing an actuator to a structure. In one form the apparatus includes a first clamp member connected to an actuator and having a first mating structure, and a second snap-fit clamp member having a second mating structure that engages and mates with the first mating structure when the second clamp member is snapped onto the first clamp member to form a clamp that secures the actuator to a structure and encloses the structure so that the actuator is easily and properly connected to the structure.

Abstract: A two stage seal for a shut-off valve having a bonnet with a rotatable valve stem therethrough. The first seal is conventional packing material axially compressible to adjust its sealing force against the valve stem. The second is a cartridge seal gland with inner and outer "O" rings axially biased against the packing material by a packing nut threaded in the bonnet.