The Marwin 760 Series provides a cost effective, universal approach to your valve control. Their modular concept allows all models to be built on the base pneumatic unit (760P). The electro-pneumatic model (760E) is created by adapting an I/P Transducer to the base, and a wide range of accessories is easily installed inside the unit. The 760 base pneumatic unit provides cam characterization, split ranging, direct or reverse action, and single or double acting without requiring additional parts. Key design features include non-interaction of the zero and span adjustments. Series 760 Valve Positioners include provisions for internal limit switch mounting and position feed-back devices without requiring additional housings. Thus, the need to stack housings that impede access to the main enclosure are eliminated. A spool valve is used to load the actuator for positioning in response to an input signal. A characterized cam provides mechanical feedback. There are linear, equal percentage and quick opening operation cam profiles, and a blank profile cam is available for custom applications. No additional parts are necessary to change between single or double acting actuators or direct or reverse action.