Product Bulletin Fisher™ 585C Piston Actuators The 585C linear piston actuator is a powerful, double-acting actuator that provides accurate throttling or on-off operation for sliding-stem control valves. The 585C piston actuator family is available in sizes 25 to 130 to cover a wide range of thrust and travel length requirements. It can be used with switching valves for on-off control, or with the DVC6200 digital valve controller or 3600 positioner for throttling applications. The 585C has a wide-range of supply pressure capabilities, up to 150 psig. As the 585C is double-acting, the positioner supplies air to both sides of the piston, resulting in stiff, precise movement and control. For more information contact your Emerson sales office. X0175-2 FISHER 585C PISTON ACTUATOR WITH FIELDVUE™ DVC6200f DIGITAL VALVE CONTROLLER n Broad Travel Capability-- 585C piston actuators provide standard travel lengths of up to 203 mm (8 inches). n High Thrust Capability-- With standard air supply, the Size 130 Fisher 585C can produce up to 111,000 Newtons (25,000 lbs) of force. n Wide Range of Sizes-- The 585C family of actuators offers a wide range of sizes, with piston areas of 168 sq cm (26 sq in) up to 1,429 sq cm (221.5 sq in). n Rugged Construction-- The 585C standard yoke material is ductile iron, resulting in robust construction and increased thrust capability. actuators are available with a variety of positioners and accessories, including the FIELDVUE DVC6200 digital valve controller. The 377 trip valve and tank system are also available for fail-safe action. n Low Ambient Temperature-- Option available for applications with ambient temperatures down to -60° C (-76° F). Uses Fluorosilicone O-rings and Nitronic 50 stem connector assembly. Compliant

Product Bulletin Figure 1. Fisher 585C Piston Actuator Components SPRING (SIZES 25 AND 50) CYLINDER TRAVEL STOP STEM O-RING PISTON O-RING SEAL BUSHING TRAVEL INDICATOR ACTUATOR STEM STEM CONNECTOR Contents Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features and Advantages . . . . . . . . . . . . . . . . . . . . . . Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . Instrument and Accessory Selection . . . . . . . . . . . . . Installation . . . . . . . ....

Product Bulletin D102086X012 Specifications Operating Pressure(1) Sizes 25-50: Maximum Allowable: 10.3 bar (150 psig) Minimum Recommended: 1.4 bar (20 psig) Sizes 60-130: Maximum Allowable: See table 8. Minimum Recommended: 2.4 bar (35 psig) Travel See table 2 Thrust Capabilities See tables 4, 5, 6, 7, and 8 Stroking Speeds Varies with actuator size, actuator spring, travel, and supply pressure. If stroking speed is critical, consult your Emerson sales office Piston Area See table 8 Cylinder Volumetric Displacement See table 2 Operative Temperature Limits(1) For All Sizes: Standard Construction...

Product Bulletin Features and Advantages Table 1. Features and Advantages FEATURES High thrust capability With air supply capability of up to 150 psig, the 585C can produce up to 111,000 Newtons (25,000 pounds) thrust to overcome high valve unbalance. Stroke Length Capability Depending on size, strokes of up to 203 mm (8 inches) are available. Wide range of sizes Valve mounting capability Depending on size, the 585C can be mounted to yoke boss diameters of 2-1/8 inches through 5-inches, and valve stem diameters of up to 1-1/4 inch. Positioner mounting capability Universal NAMUR mounting provides...

Product Bulletin Figure 3. Fisher 585C Piston Actuator with Handwheel Actuator with Handwheel (figures 3 and 6) The handwheel version can be used to open or close the valve manually (either during normal operation or in an emergency), to position the valve at any point in the stroke, or to act as a travel stop. Size 25 and 50 actuators use an integral top-mounted handwheel. See figure 6. Size 60 to 130 actuators use a side-mounted handwheel, and come with a spring-loaded ball detent which prevents vibration from changing the handwheel setting. Handwheels for most types are either 203 mm (8 inches)...

Product Bulletin Instrument and Accessory Selection normal installation is with the actuator vertical above the valve. Actuator and positioner dimensions are shown in figures 6, 7, and 8. An excellent selection of sensitive and accurate instruments and accessories is available for 585C piston actuators. These include FIELDVUE DVC6200 digital valve controllers, 3600 pneumatic (P/P) and electro-pneumatic (I/P) positioners, TopWorx™ DXP M21GNEB electrical valve stem position switch, 377 trip valve, 4200 electronic position transmitter, and limit switches. They are described in separate publications....

Product Bulletin Table 3. Yoke Boss and Valve Stem Diameters ACTUATOR SIZE YOKE BOSS DIAMETER VALVE STEM DIAMETER 1. Heavy actuator to bonnet bolting. Figure 5. Clearance Volumes UPPER CLEARANCE VOLUME VOLUME ABOVE PISTON VOLUME BELOW PISTON LOWER CLEARANCE VOLUME

Product Bulletin Actuator Thrust Capabilities Table 4. Fisher 585C Size 25 and 50 Actuator Thrust Capabilities, U.S. Units (Spring Retracts Stem) ACTUATOR SIZE ACTUATOR SPRING THRUST, POUNDS SPRING STEM RATE, TRAVEL, Stem Stem lb/in INCHES Retracted Extended NET THRUST FOR 585C WITH ACTUATOR STEM FULLY EXTENDED AT FULL TRAVEL Operating Pressure, psig(1) 40 SPRING COLOR Force, Pounds Light Green Gold & White Light Green & White Light Blue Pink & Light Blue Pink & Green X indicates where the listed supply pressure is not sufficient to overcome the opposing bias spring effect. 1. The maximum design...

Product Bulletin Table 5. Fisher 585C Size 25 and 50 Actuator Thrust Capabilities, Metric Units (Spring Retracts Stem) ACTUACTU- SPRING ATOR STEM ATOR RATE, SIZE N/mm TRAVEL, mm NET THRUST FOR 585C WITH ACTUATOR STEM FULLY EXTENDED AT FULL TRAVEL Operating Pressure, bar(1) Stem Retracted Stem Extended SPRING COLOR Light Green Gold & White Light Green & White Light Blue Pink & Light Blue Pink & Green X—Indicates where the listed supply pressure is not sufficient to overcome the opposing bias spring effect. 1. The maximum design pressure for size 25 and 50 actuator is 10.3 bar. Maximum rating for...