RPDA Series Rotary Piston Double Acting Actuators

Transcription

1 RPDA Are Suited for Below Grade Regulation and "Bleed to Pressure System" Applications Description: The RPDA Rotary Piston Double Acting Actuator is designed for heavy duty control applications the require optimum performance. The RPDA is typically utilized when applications require a "lock last" failure mode. The RPDA incorporates a crank-arm mechanism specifically designed for the rigors of throttling control valve applications. The RPDA can accept high pressure power supply gas up to 500 psig (3447 kpa) enabling the use of smaller actuators or Becker s exclusive Bleed to Pressure System (BPS) feature. Features: Bleed to Pressure System Can Eliminate Bleed Gas Emissions RPDA Actuator can retrofit to almost any valve in your pipeline Bleed to Pressure System Can Eliminate Bleed Gas Emissions High Pressure RPDA Actuator accepts high-pressure natural gas up to 500 psig. Upright actuator design promotes longer actuator piston seal life, saves space The RPDA Rotary Piston Double Acting Actuator is designed to be maintenance free! All RPDA actuators come equipped with a precision linear scale that indicates valve position in ten (10) degree increments. Crank arm design actuators are specifically suited for control valve applications RPDA Actuators may be mounted in any installation orientation Figure Becker RPDA Rotary Piston Double Acting Actuator The Becker RPDA Actuator is a rugged, quarter-turn actuator design for the rigors or aggressive throttling service. The RPDA features a high pressure crank-arm design specifically geared for control valve service. The high pressure capability of the RPDA allow power gas pressures up to 500 psig. This extended power gas range permits the implementation of Becker's unique "bleed to pressure system" that eliminates all atmospheric emissions. Additionally, the RPDA is available with a Below Grade Option to substantially reduce noise with minimal additional expense. Actuator Type: Mechanism: Usage: Action: Applications: Max. Supply Gas: Bleed to Pressure System: Below Grade Design: Maximum Valve Size: Minimum Valve Size: Stop Adjustment: Torque output: Compatible Valves: Quarter Turn (90 Rotation) Crank-arm Heavy-duty Double-Acting Throttling, On-Off 500 psig (3447 kpa) Yes Yes 42 bore 2 bore Internal ,000 + in-lbs. FPCV-T0, QTCV-T1 & QTCV-T2 Figure Electrical Utility Utilizes Becker RPDA Actuated Control Valves to Feed Natural Gas Fired Power Plant A pressure control regulator station is shown here with Becker RPDA actuators and T-Ball Control Valves. The RPDA actuators are equipped with Becker VRP-CH Valve Regulator Pilots. The VRP's are capable of providing extremely accurate pressure control with fast response necessary for power plant type applications. Additionally, note that the VRP-CH pressure control pilots are equipped with Model VB-250 Volume Boosters to increase stroking speed. The primary regulator is equipped with a Model QTCV-T2 Quiet Trim Control Valve to provide decreased noise during operation. The monitor regulator is equipped with a Model FPCV-T0 Full Port Control Valve that ensures bubble tight shutoff with class VI shutoff. RPDA 1 September 2001

2 RPDA Rotary Piston Double Acting Actuator Components 1 *see page 3, figure 4.0 of RPDA brochure for complete description of RPDA Actuator Cylinder Figure RPDA Rotary Piston Double Acting Actuator Exploded View Table RPDA Rotary Piston Double Acting Actuator part descriptions and materials. Item # Description Material Item # Description Material 1 Cylinder* Carbon Steel 13 Lexan Cover Lexan 2 Jam Nut Carbon Steel 14 Indicator Frame PVC 3 Rod Clevis Carbon Steel 15 Set Screw Carbon Steel 4 Indicator Bar Stainless Steel 16 Actuator Housing Carbon Steel 5 Position Indicator Aluminum 17 Vent Elbow Plastic 6 Tru-Arc Ring Carbon Steel 18 Square Key Carbon Steel 7 Cover Plate Carbon Steel 19 Outboard Bearing Plate Carbon Steel 8 Gasket Rubber 20 Torque Arm Carbon Steel 9 Rod Clevis Pin Stress Proof Steel 21 Adapter Plate Carbon Steel 10 Pin Clamp Carbon Steel 22 Stud Carbon Steel 11 Connecting Link Carbon Steel 23 Nut Carbon Steel 12 Torque Arm Pin Stress Proof Steel *Note - See page 3, figure 4.0 for complete description of RPDA actuator cylinder. RPDA 2 September 2001

3 Becker RPDA Rotary Piston Double Acting Actuator Cylinder Components 1 Table Components & Materials for construction of RPDA Rotary Piston Double Acting Actuator Cylinder Item # Description Material 1 Hex Nut Steel 2 Cylinder Tie-Rod High Strength Steel 3 Piston Head (top) Steel 4 Tube Seal (top) Buna-N O-Ring 5 Piston U-Cup Seal (top) Buna-N 6 Piston Wear Strip Reinforced Teflon * 7 Piston U-Cup Seal (bottom) Buna-N 8 Piston Nodular Iron 9 Piston Rod Hard Chrome Plated Steel 10 Tube Seal (bottom) Buna-N 11 Piston Head (bottom) Steel 12 Piston Rod Seal Polyurethane 13 Piston Rod Bearing Duralon ** 14 Gland Plate Steel 15 Gland Plate Screw s (SHCS) Alloy Steel 16 Piston Tube Precision Honed Steel Notes: * Teflon is a registered trademark of Dupont Company ** Duralon is a registered trademark of Rexnord, Inc. *** See page 2, figure 3.0 for complete description of RPDA actuator Figure RPDA Rotary Piston Double Acting Actuator Cylinder Exploded View 15 RPDA Actuators Standard Mounting Configurations Figure 5.1 Figure 5.2 Figure 5.3 Figure 5.4 Mount #1 - Left Hand (Standard) Actuator located on left hand side of valve when looking in direction of flow. (actuator vertical / valve horizontal) Mount #2 - Right Hand Actuator located on left hand side of valve when looking in direction of flow. (actuator vertical / valve horizontal) Mount #3 - Vertical Stem (Actuator Downstream) Actuator located on downstream side of valve when looking in direction of flow. (Actuator Horizontal / Valve Stem Vertical) Mount #4 - Vertical Stem (Actuator Upstream) Actuator located on downstream side of valve when looking in direction of flow. (Actuator Horizontal / Valve Stem Vertical) RPDA 3 September 2001

4 RPDA High Pressure Actuator Built Solid for All Your Control Valve Needs Bleed to Pressure System Can Eliminate Bleed Gas Emissions Becker RPDA Actuators feature the unique ability to incorporate the "Bleed to Pressure System" Feature. Becker RPDA Actuators and control instrumentation can accept high pressure power gas and discharge "bleed gas" to lower pressure systems. "Bleed to Pressure System" eliminates all atmospheric emissions! Below Grade Actuator Option Reduces Noise Attenuation up to 37 dba Becker RPDA Actuators are available with a unique Below Grade option that provides superior noise attenuation in regulator stations at minimal cost. Additionally, Below Grade stations also minimize ambient heat loss by maintaining piping systems below ground. Maintenance Free The RPDA Rotary Piston Double Acting Actuator is designed to be maintenance free! No regular lubrication is required for the Piston Cylinder or the Actuator mechanism. High Pressure Capability The RPDA Actuator is specifically constructed to accept high pressure natural gas up to 500 psig. Higher pressure power gas allows use of smaller actuators and implementation of Becker s unique bleed to pressure system. We can retrofit to almost any valve in your pipeline! We can provide high quality actuators to mate to almost any quarter turn valve, regardless of manufacturer or age of the valve. We have years of experience successfully adapting our actuators to fit a multitude of valves. U-Cup Seals Piston Seals u-cups are designed to provide superior sealing capabilities with minimal friction. This design allows accurate positioning of the control valve actuator with very slight pressure differential to the Piston. Vertical Advantage Upright Actuator promotes longer actuator piston seal life, saves space and requires less maintenance than other actuators. Figure Cutaway view of RPDA Actuator and Cylinder. Easy to Read Travel Indicator All RPDA actuators come equipped with a precision linear scale that indicates valve position in ten (10) degree increments. Crank Arm Designed For Control Valves Crank arm design actuators are specifically suited for control applications. The crank arm provides an increasing torque curve that develops high torque output where it counts. Additionally, the crank arm design minimizes friction and lost motion. Torque Arm Bearings RPDA Actuators features two (2) large Torque Arm Bearings to eliminate side load to control valve stem. Both Inboard and Outboard Torque Arm Bearings are manufactured from non-metallic Duralon material to ensure maximum load bearing capacity. Custom Coatings Available Standard preparation of Becker RPDA actuators includes sandblast per SP-10 and epoxy coating for above grade actuators and coal tar epoxy for below grade actuator portions. RPDA actuators are available with custom coatings to suit your exact needs. RPDA 4 September 2001

5 Figure RPDA Single Cylinder Actuator up to 12 inch stroke E F A C B Table 3.0 Model RPDA Single Cylinder Actuator Dimensions up to 12 inch stroke Model A B D E F H 4D 5D 6D 6F 8F 8H 8L 10F 10H 10L 12L 14L Dimensions in inches (mm) Weight lbs (kg) Volume in 3 (cm 3 ) (235) (359) (60) (159) (114) (137) (54) (1,904) (359) (60) (194) (140) (137) (57) (1,968) (259) (371) (60) (219) (165) (137) (68) (2,097) (310) (462) (92) (165) (165) (178) (95) (5,644) (297) (478) (92) (216) (216) (178) (111) (5,412) (332) (503) (121) (216) (216) (178) (134) (10,754) (449) (637) (184) (216) (216) (216) (200) (32,764) (332) (489) (92) (270) (270) (178) (157) (6,049) (383) (514) (121) (270) (270) (178) (177) (12,401) (484) (648) (184) (270) (270) (216) (247) (35,311) (484) (648) (184) (219) (297) (35,311) (532) (654) (184) (219) (386) (38,784) Note: Dimensions B and C w ill change for below grade units according to depth of burial H RPDA 5 September 2001

6 Figure RPDA Single Cylinder Actuator more than 12 inch stroke E F A C L B K H Table 4.0 Model RPDA Single Cylinder Actuator Dimensions more than 12 inch stroke Dimensions in inches (mm) Weight Vol Model A B C E F H K L lbs in3 (kg) (cm3) 12T 12X 12Z 14T 14X 14Z (751) (852) (903) (786) (887) (938) (1041) (1210) (1235) (1057) (1219) (1245) (2199) (2550) (2626) (2243) (2589) (2665) (447) (515) (588) (529) (606) (647) (152,115) (248,684) (309,250) (159,190) (258,872) (321,207) Note: Dimensions B and C and K w ill change for below grade units according to depth of burial RPDA 6 September 2001

7 Figure 9.0 Model RPDA Double Cylinder Actuator Dimensions more than 12 inch stroke E F A L C B K H Table 5.0 Model RPDA Double Cylinder Actuator Dimensions more than 12 inch stroke Dimensions in inches (mm) Weight Volume MODEL A B C E F H K L lbs in3 (kg) (cm3) D12T D12X D12Z D14T D14X D14Z (751) (852) (903) (786) (887) (938) (1041) (1210) (1235) (1057) (1219) (1245) (2275) (2596) (2697) (2319) (2640) (2742) (952) (1078) (1165) (958) (1081) (1171) (304,230) (497,368) (618,500) (318,380) (517,744) (642,414) Note: Dimensions B and C and K w ill change for below grade units according to depth of burial RPDA 7 September 2001

8 Table Becker RPDA Actuator Selection Table Actuator Size T = -20 F (-28.9 C) 100 psig (689 kpa) Pow er Gas T-Ball Valve 500 (3447 kpa) = P 1000 (6895 kpa) = P 1500 (10342 kpa)= P Size Double Acting Double Acting Double Acting 2" (50mm) 5D 5D 5D 3" (80mm) 5D 5D 6D 4" (100mm) 6F 6F 6F 6" (150mm) 8F 8F 8H 8" (200mm) 10F 10F 10H 10" (250mm) 10H 10H 10L 12" (300mm) 10L 10L 12L Actuator Size T=20 F (-6.7 C) 100 psig (689 kpa) Pow er Gas T-Ball Valve 500 (3447 kpa) = ÄP 1000 (6895 kpa) = ÄP 1500 (10342 kpa)= ÄP Size Double Acting Double Acting Double Acting 2" (50mm) 5D 5D 5D 3" (80mm) 5D 5D 5D 4" (100mm) 6F 6F 6F 6" (150mm) 8F 8F 8H 8" (200mm) 8H 10F 10H 10" (250mm) 10F 10H 10L 12" (300mm) 10L 10L 12L T-Ball Valve Size Actuator Size T = -20 F (-28.9 C) 125 psig (861 kpa) Pow er Gas 500 (3447 kpa) = ÄP 1000 (6895 kpa) = ÄP 1500 (10342 kpa)= ÄP Double Acting Double Acting Double Acting 2" (50mm) 5D 5D 5D 3" (80mm) 5D 5D 5D 4" (100mm) 6F 6F 6F 6" (150mm) 8F 8F 8H 8" (200mm) 8H 10F 10H 10" (250mm) 10F 10H 10L 12" (300mm) 10H 10L 12L Actuator Size T=20 F (-6.7 C) 125 psig (861 kpa) Pow er Gas T-Ball Valve 500 (3447 kpa) = ÄP 1000 (6895 kpa) = ÄP 1500 (10342 kpa)= ÄP Size Double Acting Double Acting Double Acting 2" (50mm) 5D 5D 5D 3" (80mm) 5D 5D 5D 4" (100mm) 6F 6F 6F 6" (150mm) 8F 8F 8H 8" (200mm) 8H 10F 10H 10" (250mm) 10F 10H 10L 12" (300mm) 10H 10L 12L 1. Customers should call Becker Precision Equipment for valve sizes over 12 bore. 2. T-Ball valves are comprised of the following: Model FPCV-TO, Model FPBV, Model QTCV-T1, and Model QTCV-T2. 3. For Power Gas Pressures greater/less than 100 psig (689 kpa) contact Becker Precision Equipment. 4. For higher ÄP Applications contact Becker Precision Equipment 5. Power Gas = Psupply - Pdischarge for applications that utilize "Bleed to Pressure System" Feature. Choose the Perfect Rotary Control Valve for your Application Model FPCV-T0 Max Noise Attenuation 0 dba (above ground) Max turndown ratio 100:1 Max Shutoff Class VI Model QTCV-T1 Max Noise Attenuation 7 dba Max turndown ratio 200:1 Max Shutoff Class V Model QTCV-T2 Max Noise Attenuation 15 dba Max turndown ratio 300:1 Max Shutoff Class IV Figure Grove T-Ball Valve Model QTCV-T2 RPDA 8 September 2001

9 Table Becker RPDA Actuator Output Torque Table RPDA Actuator Model No. Notes: 5D 6F 8F 8H 10F 10H 10L 12L 14L 12T 12X 14T 14X 14Z D12T D12X D12Z D14T D14X D14Z Angular Position¹ 100 psig (689 kpa) RPDA Actuator Output Torque / Power Gas 125 psig (862 kpa) 150 psig (1034 kpa) Ending 3600 in-lb (24821 n-m) 4500 in-lb (31026 n-m) 5400 in-lb (37232 n-m) Running 5334 in-lb (36777 n-m) 6669 in-lb (45978 n-m) 8002 in-lb (55173 n-m) Ending 7557 in-lb (52104 n-m) 9446 in-lb (65128 n-m) in-lb (78159 n-m) Running in-lb (78442 n-m) in-lb (98050 n-m) in-lb ( n-m) Ending in-lb (94879 n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Ending in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) Running in-lb ( n-m) in-lb ( n-m) in-lb ( n-m) 1. See graph to right. Ending 2. Power Gas = P supply when discharge (vent to atmosphere). 3. Power Gas = P supply - Pdischarge when utilizing "Bleed to Pressure System" feature. Running Torque Output Actuator Position (Degrees Travel) MAOP³ RPDA 9 September 2001

10 The Becker Below Grade Ball Valve Regulator option is unique to Becker and provides a multitude of benefits by direct burial of the control valve itself. The valve actuator, lubrication lines and drain lines are extended above grade while the ball valve remains below grade. Primary advantage of Becker Below Grade Regulators is inexpensive noise attenuation in excess of 25 dba More than 25 dba Noise attenuation Less ambient heat loss May use smaller adjacent piping diameter Smaller station footprint Most economical noise attenuation May eliminate need for buildings/enclosures by utilizing the Fiberglass Cabinet Up To 37 dba Noise Attenuation Below Grade Regulator Option Provides Additional Noise Attenuation Noise Attenuation (dba) dba 35 dba 30 dba 25 dba 3 Ft. Depth 4 Ft. Depth 5 Ft. Depth 6 Ft. Depth 0 Below Grade Depth (ft.) Figure Below Grade Noise Attenuation compared to depth. Noise Attenuation as Factor of Below Grade Depth. Typical below grade depths range from 3 feet burial to 6 feet burial below grade. The below grade depth is measured from centerline of pipe to grade. Below grade noise attenuation usually provides from 25 dba to 35 dba noise attenuation for these buried depths. Figure Installation of Becker Below Grade Regulators (Prior to Backfill) A large natural gas transmission/distribution company based in Southern California installed Becker Below Grade Ball Valve Regulators to achieve maximum noise attenuation, minimal maintenance, and optimum cost effectiveness. The Below Grade Regulator can provide up to 35 dba additional noise attenuation with minimal additional cost. Two different size Below Grade Ball Valve Regulators are show here. 16" Bore Below Grade Regulators are shown in background, while 30" bore Below Grade Ball Valve Regulators are shown in foreground. The Below Grade Ball Valve Regulators are shown during installation, prior to backfill of regulator station. Figure Installation of Becker Below Grade Regulators (After Backfill) The customer was able to achieve up to 25 dba noise attenuation over conventional above ground control valves with minimal costs. The RPDA Rotary Piston Double Acting Actuator utilizes an extended linkage to throttle the control valve below ground. Many Becker customers have utilized the below grade concept for many years with great success and minimal maintenance. The topworks of the control valve actuators are enclosed with Becker CAB Series Fiberglass Cabinets (green) after backfill of regulator station. 16" Below Grade Ball Valve Regulators are located at left, while 30" Below Grade Ball Valve Regulators are located at right. A masonry wall has been installed at perimeter of station. Upstream station isolation valves are located in foreground of picture. RPDA 10 September 2001

11 Accessories Becker Control Valve Actuators provide reliability and accuracy for all of your control valve applications Limit Switches - Limit switches provide an indication of valve status and are commonly utilized on both on-off and control valves. A limit switch assembly will close a contact at both the full open and at the full closed position of valve travel. The switches provide a remote indication to gas control, RTU or a flow computer as to the status of a valve. Limit switch assemblies are available with a variety of configurations. Housing: NEMA 4, 4X, Class I, Groups C & D, Division 1 & 2 SPDT Single pole, Double Throw Sw itches 2 or 4 DPDT Double pole, Double Throw Option: 2 or 4 Hermetically Sealed Sw itches up to 125 amps up to amps Position Transmitter - The Valve Position Feedback assembly provides a quantitative indication of the exact position of a control valve. The Valve Position Feedback assembly provides 4-20 ma analog remote position feedback proportional to the control valve position. The feedback signal may be utilized as an integral portion of the control loop or merely as an additional feedback signal to gas control for monitoring valve status. Valve Position Feedback is typically utilized on flow control valves. Transmitter: 4-20 MA Output SPDT Single pole, Double Throw Housing: NEMA 4, 4X, Class I, Groups C & D, Division 1 & 2 DPDT Double pole, Double Throw Sw itches 2 or 4 up to 125 amps Option: 2 or 4 Hermetically Sealed Sw itches up to amps Trip Valve - The Trip Valve protects double-acting actuators from loss of supply gas pressure. In the event that the supply gas pressure falls below a minimum level, the trip valve can be configured to do one of the following: Lock the valve in last position, Stroke the valve to the full open position*, Stroke the valve to the full closed position* *These applications require an additional volume tank to perform the operation Max. Allow able Supply Pressure: 150 psig (1034 kpa) Trip Point: Adjustable from 40 psig (276 kpa) to 70% of Supply Pressure Weight: 4.5 lbs (2.0 Kg) Volume Tank: Required for fail open or fail closed modes. Body Connections: 1/4" NPT female DOT approved LP Tank (240 psig (1655 kpa) Temperature Limits: -40 F (-40 C) to 180 F (82 C) Max w / DOT Stamp). Size based on application. Hydraulic Operator override - The Hydraulic pump override is utilized for manual operation of large control valves when pneumatic power is not available. The Hydraulic pump override utilizes a hydraulic pump and reservoir to develop necessary torque to close/open the control valve. Note that Hydraulic pump overrides are typically utilized on ball control valves larger than 16 bore. Gear Operator Override - The Manual Handwheel is utilized for manual operation of small/medium sized control valves when pneumatic power is not available. The handwheel utilizes a system of gear multipliers to develop necessary torque to close/open the control valve. Note that Manual Handwheels are limited ball type control valves 16 bore and smaller. MCV - The MCV Series Manual Control Valve provides manual operation of pneumatic valve actuators. The MCV is the ideal device for maintenance and manual operation of control valves. The MCV allows the user to override the primary control instrumentation and position the control valve actuator in any position. The unique safety button feature of the MCV prevents unintentional operation. An optional locking feature is available for additional security. Max. Allowable Operating Pressure All Ports: 1/4" NPT female Model MCV-3: Up to 150 psig (1034 kpa) Weight: 10 lbs (4.5 Kg) Model MCV-3M: 150 (1034) to 250 psig (1724 kpa) Model MCV-3H: 250 (1724) to 500 psig (3447kPa) RPDA 11 September 2001

12 Let Becker Help Select the Perfect Rotary Control Valve Actuator! Becker Precision Equipment has a wide variety of control valve actuators with a variety of features that ensure the optimum solution for your application needs. Refer to the figures below to assist you in selecting the proper control valve actuator & accessories. Table Selection table for Becker Control Valves and Actuators RPDA (Small Models) RPDA (Large Models) Actuator instrumentation VRP-CH Pilot VRP-B-CH Pilot VRP-SB-CH Pilot VRP-SB-PID Pilot HPP-4 Positioner HPP-5 positioner HPP-SB positioner EFP positioner Other Positioners Compatible Valves FPCV-T0 QTCV-T1 QTCV-T2 QTCV-T3 CVEZ CVET Actuator options Below Grade Option Bleed to Pressure System Limit Switch Position Transmitter Trip Valve Hydraulic Override Gear Override Manual Control Valve 1. RPDA, SYDA & LPDA Small Models are defined as actuator sizes <2000 in³ (32,774 cm³) 2. RPDA, SYDA & LPDA Large Models are defined as actuator sizes >2000 in³ (32,774 cm³) 3. LD Series Actuators are limited to Becker CVE Series Glove Valves 4. BPS is limited to discharge pressure systems below 300 psig SYDA (Small Models) SYDA (Large Models) RPSR SYSR (2068 kpa). Consult Becker for application assistance. *CAUTION: This information is intended as a guideline for application of Becker Precision Equipment products. Becker strongly recommends consulting Becker Engineering prior to application of any product. LPDA (Small Models) LPDA (Large Models) LPSR LD Additional Resources are available on our website. Sales literature, sizing software, and technical manuals are available for download at Figure Becker RPDA Rotary Piston Double Acting Actuator The Becker RPDA Actuator is a rugged, quarter-turn actuator design for the rigors or aggressive throttling service. The RPDA features a high pressure crank-arm design specifically geared for control valve service. The high pressure capability of the RPDA allow power gas pressures up to 500 psig. This extended power gas range permits the implementation of Becker's unique "bleed to pressure system" that eliminates all atmospheric emissions. Additionally, the RPDA is available with a Below Grade Option to substantially reduce noise with minimal additional expense. Toll-Free Assistance! (800) Becker Operations 950 Pratt Boulevard Elk Grove Village, Illinois USA Phone: Fax: Toll Free: US & Canada becker@flowcontrol.dresser.com Website: RPDA 12 September 2001