BULLTIN B PISTON ACTUATOR. The Actuator that Delivers Maximum Torque for Minimum Air Consumption

Transcription

1 BULLTIN B60 PISTON ACTUATOR The Actuator that Delivers Maximum Torque for Minimum Air Consumption

2 TABLE OF CONTENTS: COMPACT DESIGN PRINCIPLE OF OPERATION PARTS LIST MAIN FEATURES TORQUEMETRIC TORQUEIMPERIAL TECHNICAL DATA DIMENSIONS HOW TO ORDER PAGE Proven Advantage The COMPACT II is a quarter turn rack & pinion pneumatic actuator that is patented worldwide. The superiority of the COMPACT II actuator over single and double rack & pinion actuator designs, results from the four pistons which generate torque around a centrally located pinion, thereby giving more than double the torque achieved by these other designs. The increased number of pistons in the actuator allows their diameter to be reduced while maintaining its high torque. This also allows the overall size of the actuator to be reduced and become more compact. Space Saving, Fast Acting The COMPACT II has four small cylinders, each located on one of the four sides of a cube. At a given air pressure, the COMPACT II can produce the same torque output as double piston actuators, using smaller diameter pistons and a narrower pinion. A narrower pinion results in a shorter piston travel, which permits a compact, space saving mechanism and fast acting travel from one position to the next. Superior Corrosion Resistance The body and covers are anodized internally and externally, providing protection against ingress of corrosive atmosphere. An external epoxy base layer and a second polyurethane paint provides additional protection against aggressive environments. Optional Electroless Nickel Coating of body, covers and stop. Less Air Consumption The COMPACT II gives maximum torque for minimum air consumption. It is both compact in size and energy efficient, creating a fast responding, troublefree, high cycle lifespan. The cube shape of the COMPACT II and the short piston travel serve to minimize excess space. This is space which is not swept by piston travel and which must be pressurized before the piston motion begins; therefore, reducing the pressurization of excess space and resulting in reduced energy requirements. Balanced Forces The cubeshaped configuration of the COMPACT II positions the pistons so that each piston develops thrust along its own axis, rather than the offaxis thrust, that results from the geometry of most other actuator configurations. Piston side loading, caused by offaxis thrust, does not occur, thus resulting in less stress on the seals. Nested s The COMPACT II fourspring chambers can use up to three different spring sizes, which are nested between the covers and pistons and are aligned by centering rings. Each spring is wound in the opposite direction to its neighbor to avoid entanglement. As there are four cylinders, there are many more spring combination possibilities than with double piston actuators. This results in better solutions for any air supply pressure required. Special painting of the springs provides higher corrosion resistance to the environment, giving more than 0 Page

3 Less Wear Limit Stop With its unique piston design, the Compact II achieves a more uniform load distribution than do single and double piston actuators, therefore greatly reducing gear wear at the points of contact between rack and pinion. The forcebalanced piston with its shorter stroke prevents uneven wear of Orings, gear and pistons. This eliminates the need for bearings and reduces the number of soft parts, thereby resulting in longer maintenance schedules and low cost of repair kits. The high surface finish of the four cylinder is protected from wear due to the hardened surface created by the anodizing treatment. Indicator & Puck The pinion and stop rotation can be adjusted by four large diameter adjustable set screws diametrically opposed and threaded into the actuator body. Each opposing pair of screws exerts simultaneous and equal forces on opposite sides of the stop when the rotation limit is reached, thus, no offcenter forces are generated. The stop design allows for +/5 of rotational adjustment in both directions of travel. Any intermediate position can be achieved with a longer set of stop screws. This feature is built into the actuator stop mechanism and eliminates the need for additional plates and screws. The stop material is St.St. for better wear and corrosion resistance. Close Open A highly visible indicator with flow direction arrows is snapped to the pinion providing easy identification of valve position. The indicator snapon arrows allow true positioning of any type of ball porting. A puck with three position signaling inserts and a highly visible indicator with flow direction arrows is bolted to the pinion to provide a cost effective option for valve monitoring. Limit Open Pinion The pinion has a doublesquare female drive on its bottom plane for accepting the ISO 5 or DIN coupling options. The top plane has the Namur slot for attachment to switches or positioners. There is a machined flat below the Namur interface to provide for manual operation of the actuator by use of a wrench. The pinion is made from carbon steel with EN plating which gives a hard wearing surface with added protection against corrosive environments. Page

4 The COMPACT II actuator transforms the linear motion of it's pneumatic pistons into rotary motion via gear racks that drive the central pinion. Air Supply, to drive the pistons, flows into port A of the NAMUR cover: Port A is connected to the center chamber and port B is connected to the four outside chambers. Double Acting CCW CW Pressure entering Port A to open: Center chamber pressurized. Pistons move outward. Pinion rotates counter clockwise. Return Pressure entering Port B to close: Outside chambers pressurized. Pistons move inward. Pinion rotates clockwise. CCW CW Pressure entering Port A to open: Center chamber pressurized. Pistons move outward. s are compressed. Pinion rotates counter clockwise. Pressure exiting Port A to close: Air released from center chamber. s drive pistons inward. Pinion rotates clockwise. Page

5 Parts List A A Description Qty Material Description Qty Material Body AL 56T6 Stop ST.ST 6 Piston AL 56/ Thrust Washer Delrin, NRG, UHMWPE Piston ORing Buna N, Viton, EPDM 5 Pinion ORing Buna N, Viton, EPDM Inner steel, Painted 6 Disc Bearing ST.ST / Delrin 5 Middle steel, Painted Circlip ST.ST 6 Outer steel, Painted 8 Pad Delrin, NRG, UHMWPE Cover ORing Buna N, Viton, EPDM Stroke Adjustment Screw ST. ST. a Namur Cover ORing Buna N, Viton, EPDM 0 Exhaust Plug (Silencer) Delrin, (Brass) 8 Return Cover AL 56/ Indicator Plastic (ABS), Red & White 8a Namur Cover AL 56/ Puck Plastic (ABS), Red & White Double Acting Cover AL 56/ Indicator Screw ST.ST 0 Air Supply ORing Buna N, Viton, EPDM Tag (not shown) ST.ST Cover Screw ST. ST. Namur insert AL Pinion Steel E.N.Coated 6 Insert screw ST.ST Page 5

6 MAIN FEATURES s painted for protection and fitted coaxially in a chamber have many setting combinations to provide for any operating pressure NAMUR VDI/VDE85 connection to limit switches Rugged body construction, anodized and with double layer coating for protection against corrosion Smaller in overall size compared to double piston actuators return cover with long screws for safe relief of springs One cover always with NAMUR interface for solenoid mounting Engineered stop for openclose and intermediate limiting positions Page 6

7 Visible position indicator with coloured arrows and a high profile puck for limit switches pistons syetrically driving a central pinion with a balanced construction eliminates side loads NAMUR output drive for limit switches and positioners ISO 5 or DIN bottom flange for valve connection (can be seen from bottom view of actuator) covers with centering rings for spring alighnment Compact size with flat covers for double acting applications Patented piston actuator provides double the torque than a dual piston actuator Page

8 Page 8 C5 C0 C C0 C5 C5 C60 C , , , ,055, ,0, ,06,56 SIZE Operating Pressure (bar) Double Acting set Size C5 C0 C C0 C5 C5 C60.0() C5.0(58) 5.0() 5.5() 6.0(8) Stroke Start A B B B B B B B B B End Start End Start End Start End Start End.0 (0) 8.0(6) Start End Start End ,060, ,000,0,8,06,608,,, ,0,6, Air Stroke bar (psi) Start End ,5,,0,,0,06,0,00,0,,68,0,00,8,, ,05, ,5,8,8,,,66,60, ,60,5,5,6,8,,0, ,6,5,,5,0,,, ,8,,05, ,,5,,0,08, , ,,,0,,,8, ,,, Return See Page 0 for Set combinations

9 Page set Size C5 C0 C C0 C5 C5 C60 0(.8) C5 60(.) (5.5) 0(6.) Stroke Start A B B B B B B B B B End Start End Start End Start End Start End 00(6.) 0(8.) Start End Start End Air Stroke bar (psi) Start End Return See Page 0 for Set combinations ,5,88,,,,8,,8,6,560,,0,05 6,6 6,58 6, 5,0 5,6,066,556,65,55,0 0, ,8,8, ,,,8,6,,8 5,6 5,,8,,6, 0,856,8, 8,,68 6, ,0, 5, ,6, ,06,,6,,,08,58,,,6,58,85,60,85,5,8,6 5,0 5,85 6,,5 5, 6,, 8,55,06,6 0, ,00,8,6,00,5,8,6,,,566,85,5,,58,0,5,,6 5,66 5,68 6, ,6,5,08,,,0,,00,5,5,6,,5,0,00,5,6,,6,08,8,08,,, 0, 0, 0, 0,06,68,68,8 0, 0,,8,00 8,6 8,,, ,,8,08,00 0,5,0,06,5,60,6,6,,0,8,6,,6,88,6,6,06, 8,85 8,0,,085 6,5 6,0 8,, 6, 5,66,8,8,8,0 C5 C0 C C0 C5 C5 C60 C SIZE Operating Pressure (psi) Double Acting ,,8, ,8, 6,6,8 555,,0,5,8 6,05,88, 8,585 5, ,0,0,0,65,8 0 0,,,5 0,,8 68 6,6, 5,,8, ,0,0 0,00,00,0,8,5,,08 8,556 8, ,5,,0,58,05,60 6,5 6,0 5, 0(.8) ,,,8,,05,5,6,0,5,0 6,0 5,6 5,5 5,8,58, 0, 0,5,, , ,56,,5,05,08,6,8,8,,0,0 8,,68 6,60 5, ,5,6,600,5,55,8,05,,6,,,,8,,5,5 8,0,66,56,0 6,8 6,60 6,0 6,0,5,0,006,56,,0,, ,,,8, ,6,5,,0,85,58,8,6 6, 6,0 5,00 5,8,56,000,,6,6,8,0,,0 8,, 6, ,,0,08, ,005,,855,8,,6,55,5,,6,,68,,0,0,5,68 8,8 8,60 8, 8,0,,5,,05 6,5 6,0 5,5 5,00,,008, ,0,60,,,0,0,,0,8,5,8,6,0,68,,8 6,8 6, 5,85 5,5,,0,8,8,,6, 0,55,5 8,

10 Technical Data Weight Return (Full set) Weight Double Acting Air Consumption per stroke Actual Volume Litre Air Consumption per stroke Actual Volume in Stroke Time with S.V. with. Orifice at psi SIZE Kg Lb Kg Lb ccw cw Total ccw cw Total Sec. C Pressure Range: 00 PSI (.5 8 bar) for DA actuators 00 PSI ( 8 bar) for SR actuators NAMUR & ISO Interface NAMUR VDI/VDE 85 This standard provides for a range of accessories such as limit switches, pucks, indicators and positioners which have VDI/VDE interface to be easily mounted onto the actuator top face. C0 C C0 C5 C5 C60 C Operating Temperature: Buna N: 0 C to C ( F to 6 F) Viton: 0 C to 0 C ( F to 0 F) EPDM: 0 C to C (0 F to 6 F) Combinations OUTER MIDDLE INNER C5 ONLY CODE A B B C0C5 CODE B Combinations Combinations NAMUR Solenoid Mounting One of the four covers of the actuator incorporates a pad for solenoid mounting according to the NAMUR international standard. Solenoids of any brand, conforming to the NAMUR interface can be directly mounted to the actuators. This simplifies the installation of solenoids and eliminates additional piping. It also allows quick actuation response as pressurized air supply is available at the port entrance. ISO 5 or DIN The actuator bottom flange is in accordance with ISO 5 (or DIN ) international standard and incorporates a star shaped female drive for flexibility to fit various valve output shafts. The valve can be attached by a bracket or mounted directly onto the actuator, using one of the various ISO hole patterns. Sizing a spring return actuator requires that the torque output at the start and end of both the spring and air drive strokes is greater than the valve torque at that position. Page 0

11 Actuator Dimensions A S/R B D/A L PCD M PCD () G / ISO (FOR METRIC) / NPT (FOR IMPERIAL) M5 (FOR METRIC) 0/ UNC (FOR IMPERIAL) PORT B (0.) (0.) (0.) PORT A (.60) 6 (0.60) (0.5) SLOT DEPTH F M6 (0.5) SLOT WIDTH h A B S/R D/A Y Y C D E SIDE VIEW C5 C5 G X TOP VIEW C5 C5 A S/R B D/A L PCD X TOP VIEW C5 ONLY VDI/VDE Brackets on request L PCD M PCD () F h B D/A Y A S/R D C E SIDE VIEW C5 C5 G X TOP VIEW C5 C5 BOTTOM VIEW C5 C5 K PORT B PORT A (0.) VDI/VDE 85 SIZES X x Y x h C5 C5 x 0 x 0 C60 C5 0 x 0 x 0 PORT A connected to the center chamber PORT B connected to the outside chambers K (0.) 6 (0.60) (.60) (0.) SIZE A S/R B D/A B D/A C D E F G K L PCD M PCD () C5 C0 C C0 C5 C5 C60 C (F05) (F05) 0 (F0) 0 (F0) 0 (F0) 5 (F) 0 (F) 65 (F6). (F05). (F05).6 (F0).6 (F0).0 (F0). (F) 5.5 (F) 6. (F6) 0 (F0) 0 (F0) 0 (F0).6 (F0).0 (F0).0 (F0) Page

12 NAMUR & ISO Interface An extensive range of accessories such as Solenoids, Positioners and Limit Switches are available for direct mounting to the COMPACT II actuator. As standard, all accessories which have connections that comply with ISO 5 or DIN and VDI/VDE 85 (Namur) mounting can be connected to the actuator. Dome The Dome is a weatherproof enclosure for the Compact pneumatic actuator and a variety of ancillary equipment, and represents a cost effective alternative to stainless steel actuators and all of the stainless ancillary equipment required in those applications. The Dome is ideal for very corrosive environments with frequent caustic washdowns, as well as clean antiseptic applications where mostly stainless equipment is required. The Dome can be mounted on any quarter turn valve, Ball, Butterfly or Plug. Safety Features The Compact II safety features are built in and ensure a secure and safe operation whereby assembly and dismantling of the actuator becomes a simple task. Long cover bolts for spring return actuators relieve the spring load before they disengage from their threads. Before pistons can be removed, the stop screw must be released and the pinion removed, thus ensuring that any trapped pressure in the body will escape and will not become a hazard. Quality The Compact II is manufactured under ISO 00 certification and is ATEX EC approved to category for use in potentially explosive areas. All body and cover castings are identified by a stamped heat code. Flow Directions S (Straight) T (Way) L (Way 0 DEG) X (Way) How to Oder When ordering the Compact II series actuator, please give all the information as specified below. SIZE TYPE SPRINGS SET THREADS INDICTATOR OPTIONS C5 C0 C C0 C5 C5 C60 C5 SR Return DA Double Acting C5 C0 to C5 For more details of spring set combinations see page 0 I Imperial M Metric Standard White with Red arrows D Red with White arrows P Puck Flow : T Way L Way 0 Deg X Way A B B B S Straight V E N U RFS Viton Orings EPDM Orings Electroless Nickel Coating UHMWPE for Radiation Reverse Fail Safe Actuator Examples C5 SR MN Size C5, spring return, spring set, metric thread, standard indicator, electroless nickel coating. C60 DA IDTE Size C60, double acting, imperial thread, indicator red with white arrows, flow Way, EPDM Orings. In accordance with our policy to strive for continuous improvement of the product, we reserve the right to alter the dimensions, technical data and information included in this catalogue when required. Compact Inc. P.O.Box Paramus, NJ 065 Toll free : 65 Phone : Fax : www. compact.com Your local Distributor: ISSUE HA 06/0