Valve actuators principally for water-circulation systems of swimming pools or spas
Abstract:
Multi-position valve actuators principally for water-circulation systems of pools and spas are detailed. At least some actuators may indicate position of an associated valve in a non-electronic manner, as by using a handle visible externally of the actuator and directly or indirectly mechanically coupled to the valve so as to move therewith. Hence, even if power to an actuator is disrupted, positioning of the valve may be determined by viewing the handle.
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