SERIES ''S'' ACTUATOR INTRODUCTION

Transcription

1 SERIES ''S'' ACTUATOR INTRODUCTION SPEC I FICATI 0 NS Pressure Range: 30 psig to 120 psig = double acting 30 psig to 120 psig = spring return maximum working pressure = I 45 PSIG Media: Dry or lubricated air. non corrosive gas, water or light hydraulic oil Temperature Range: Standard minus 20"F to plus 212"F, on request= high temperature units to 302"F = lower temperature units Rotation: Clockwise when port 'A' is pressurized for double acting actuators Anti-clockwise for spring return actuators (see principle of operation) Stroke: 90" (+I- 5") Lubrication: All moving parts are factory lubricated for cycle life of the actuator Extended Travel Stops in Both Directions: Standard adjustable +5" or - s over 90" stroke onstruction: Suitable for indoor or outdoor application Dimensions: For valve mounting in accordance with ISO 521 I top-work and pinion to NAMUR Connections: Bottom drilling to assemble valve is in accordance with I.S.O I DIN Interface for solenoid valve, top, shaft and top drilling to assemble accessories are in accordance with VDI I VDE 3845 NAMUR Special Actuators on Request: Please Consult Factory The ~ r double and spring return pneumatic rack and pinion actuators offer excellence in standards of safety, reliability and value. Our rack and pinion actuators are designed to operate "quarter turn valves". The wide torque range capabilities ensure that our units are more than suitable for ball, plug, and butterfly valve applications. Review the features and benefits that we offer. Check the specifications, and you'll find that dollar for dollar offers one of the best valve actuators in the industry. 27

2 ACTUATOR PRINCIPLE OF OPERATION Double Acting Actuator Counter Clockwise Output Rotation Selection of Double Acting Actuators Determme the requored valve torque. this should include 25% safety margin. and the minimum operatmg pressure available. Refer to the pressure I torque table and select the minimum pressure column applicable. Follow this column down until a value not less than that required is found. Next read across to the left hand column and read the model number to be ordered. Remark: The chosen torque value, which apply to the type of actuator should never be lower than the required torque value of the valve. Principle of Operation Counter clockwise output: operation is achieved by inserting pressure into Port 'A', to force t:he postons apart thus rotating the actuaror pinion counter clockwise. During this operation, air from the outer chambers Is exhausted through Port 'B'. Clockwise output operarlon is achieved by reverse of the above and inserting pressure Into Port 'B'. Clockwise Output Rotation Exhaust (Port 'B') Spring Return Actuator ' ~ Alrln L_j (Port 'A') Air In (Port 'B'} fi ' Exhaust (Port 'A') Selection of Spring Return Actuators Determine l:he required valve torque, this should include 25% safety margin. and the minimum operating pressure available. Select from the "Spring Stroke I "0"' table a value chat is not less than the required valve torque (including safety marg1n). Next refer to the pressure cable and select under your minimum pressure and " 0 "" torque column a figure not less than that required. Principle of Operation Pressure applied to Port 'A' will cause me inner chambers to be pressurized, forcing the pistons outward to compress the springs. The pinion is rotated counter clockwise. Upon release of pressure through Port 'A' the springs will exert pressure w dose the pistons and rotate the pinion clockwise rapidly. This action will often be used to close a 90" turn valve in shutdown mode. Clockwise Output Rotation Counter Clockwise Output Rotation Exhaust (Port 'A') (Port 'A') 28

3 ACTUATOR DIMENSIONS HOLES according to ISO 5211 E F D c B "NAMUR" connection for solenoid valve ~ -~~-_::_:_: _ ~~h r t--t-ff~<)l @)--- a r-[~r-~, d\--,_. -: ~ -@ ~ ~ +![. ' t-t---«: -: - -~ {)-- -~ - I~YH~~------~-~ I +D~J 0 p A Weights (Lbs) Model API AP2 AP3 AP3.5 AP4 AP4.5 AP5 APS.S AP6 AP8 Double Acting Spring Ret urn Dimensions Model A B c D E F API AP AP AP AP AP AP AP AP AP G H 1.61 I f 8" 1.75 I f 4" 1.94 I / 4" 2.08 I / 4" 2.28 I / 4" 2.71 I / 4" -- 1 / 4" -- I 14" -- I 14'' - I 14" p Q R s T M M M M B M M M M l M M 16 ISO 5211 F03 F04 I FOS FOS I F07 F07 F07 I Fl O Fl O FlO Fl2 F12 Fl4 Multi drive adaptors available to suit variable butterfly valve shaft designs for direct mounting 29

4 MtJterial Ust Item Qty Part Name Material Actuator Body Aluminum Alloy 2 2 Pinon Aluminum Alloy 2 End- Cap Aluminum Alloy 4 I Pinion Carbon Steel * 5 2 Piston Guide Acetal Resin.. 6 Pinion Guide Ring Acetal Resin * 7 "0" Ring Nitrile Rubber * 8 Pinion Guide Ring Acetal Resin * 9 "0" Ring Nitrile Rubber 10 Circllp Stainless Steel II Thrust Washer Acetal Resin, Plug Nitrile Rubber 13 "- 12 Preloaded Springs Steel 14 2 Screw Extemal Stroke Stainless Steel 15 2 "0" Ring Nitrile Rubber 16 2 Plain Washer Stainless Steel 17 2 Stop Nut Stainless Steel 18 8 End Cap Bolts Stainless Steel 19 2 ''0" Ring Nitrile Rubber 20 2 Piston Guide Ring Acetal Resin 21 2 "0'' Ring Nitrile Rubber 22 Cirdip and -blow out Stainless Steel * Sugge.tted Spare Parts Ust for Maintenance.

5 Actuator ILLUSTRATION 31

6 ACTUATOR TORQUE SPECIFICATIONS Torque Output, Double Acting Actuator, ln. Lbs. Operating Pressure psi Model API DA AP2 DA AP3 DA ~ AP 3.5 DA SIS AP4 DA APHDA IJ AP5 DA APS.S DA 13~ AP6 DA Al'8 DA ~ Air Consumption Cu. Ft. Model API AP2 APJ APJ.S AP4 AP4.5 APS APS.S AP6 AP8 DAJSR DAJSR DAJSR DAJSR DAJSR DAISR DAJSR DAJSR DAJSR OAJSR Counter Clockwise OockW>Se {DAOnly) O.H SJO Mounting Variations A Closed c Closed B Opening I Closing Time (Sec.) 80 psi Model API APl APJ APJ.S AP4 AP4.5 APS APS.S AP6 AP8 Double Actlng LessThM Less Then less Then Less Then Less Then LessTI1en Less Then Less Then Sec I Sec I Sec I Sec I Sec I Sec Sec Sec Spring Return Less Then Less Then Less Then Less Than Less Then Less Then Less Then Sec I Sec I Sec I Sec I Sec I Sec Sec 2 Sec Sec Sec 32

7 Torque Output, Spring Return Actuator, ln. Lbs. ACTUATOR TORQUE SPECIFICATIONS N of Spring Operating Press.ure psi Model For Each ao Spring S[J'1)ke S!d or p tltlon o " " 90 o API SR J s n ls I l AP2SR Ill ' ' ' APJ SR ' AP3.5 SR ' rn n n AP4 SR J <4' AP4.5 SR n '30 tnj APS SR lifts II 59 APS.S SR II II " H n AP6 SR ~ s AP8SR BOll > " Proper Arrangement of Springs SR-2 SR-3 SR-4 SR-5 SR-6 33