Abstract: In various implementations, an electronic actuator may be coupled to a valve to provide the ability to shut off anhydrous ammonia flow through the valve (e.g., in emergencies). The valve may be coupled to anhydrous ammonia tanks, such as nurse tanks and/or storage tanks. The electronic actuator may include a handle and a bracket. The handle and the bracket may include at least two attractive components that are magnetically attracted to each other upon application of an electric current and the valve may be open. When the electric current is cut, the attractive components of the handle and the bracket may not be magnetically attracted to each other and the valve may be shut off. A controller (e.g., a switch) may be coupled to the electronic actuator to allow control of the electric signal to the electronic actuator.

Abstract: A stabilizer for an archery bow includes an exterior tube, with end caps at each end, with a central shaft supported within the tube between the end caps, and projecting beyond an end cap for threaded attachment to the bow. Various piston weights and resilient dampening elements are provided and slidably mountable on the shaft within the tube; the number and sequence of weights and/or dampening elements may be selected to customize the stabilizer to a particular bow or the preference of the archer. The assembly of weights and/or dampening elements are held on the shaft between collars, which may be moved along the shaft to adjust the center of gravity of the stabilizer. The collars may be adjusted to apply compression against the assembly to adjust the vibration dampening characteristics.