Mounting and Operating Instructions EB 8227 EN
Contents
1. Stop screw EB 8227 5 Installation 2 Installation 2 1 Assembling butterfly valve and rotary actuator Note The butterfly valve may be used for throttling or on off service For on off service the opening angle must be set to 90 70 with angle seated discs using the stop screws For throttling service the opening angle must be set to 70 using the stop screws 2 1 1 Type 3331 BR 31a Type SRP If the valve and actuator have not been pre assembled by the manufacturer proceed as follows Note In the standard actuator version SRP sin gle acting with spring return mechanism the springs turn clockwise Should the springs turn counterclockwise this must be specified on ordering the actua tor The rotary actuator can be mounted either vertically or horizontally on the valve and may be positioned at 90 around the valve as required by the on site conditions over a square end shaft EB 8227 EN Valve CLOSED without supply air 1 Place disc 8 in closed position 0 an gle of rotation 2 Fasten yoke 3 with 2 or 4 screws de pending on the nominal size of the valve to the flange of the shaft 4 3 Place shaft adapter if required onto the shaft Slide actuator over adapter or shaft and fasten to the yoke using four screws 4 Turn the stop screw 12 1 or 12 2 de pending on the direction of rotation un til the valve is completely closed Align the markings on the shaft2. to the Mounting and Operating In structions of the rotary actuator used for fur ther details such as changing the spring range to achieve other actuator torques Operation 4 Maintenance N Note Before performing any maintenance work on the control valve depressurize the concerned section of the plant and drain the process medium if necessary Wait until the medium has cooled down if necessary We recommend removing the valve rom the pipeline Caution On performing any work on the valve body first shut off the supply pressure disconnect the supply pres sure line and remove the actuator 4 1 Packing Packing versions for use with temperature ranges up to 220 C are self adjusting Packing suitable for higher temperatures up to 450 C can be adjusted This packing must be adjusted carefully on starting up the plant by carefully tightening the gland flange 2 4 2 Removing the butterfly valve Note On removing the butterfly valve from the pipeline make sure that the disc is in the closed position EB8227EN 9 Customer inquiries 5 Customer inquiries Please submit the following details Order number Type designation model number nomi nal size and version of the valve Pressure and temperature of the process medium Flow rate in m3 h Bench range spring range of the actua tor Installation drawing Dimensions and weights Refer to the Data Sheet T 8227 EN for the dimensions and weig
3. with the markings on the gland flange 5 Secure the position of the stop screw with its lock nut 6 Apply a signal pressure to match the number of springs see nameplate to the loading pressure connection 7 Turn the other stop screw until the disc reaches the opening angle of 90 or TO 8 Secure the position of the stop screw with its lock nut Valve OPEN without supply air 1 Place disc 8 in open position 90 an gle of rotation 2 Fasten yoke 3 with 2 or 4 screws de pending on the nominal size of the valve to the flange of the shaft 4 3 Place shaft adapter if required onto the shaft Slide actuator over adapter or shaft and fasten to the yoke 3 using four screws 3 1 4 Turn the stop screw 12 1 or 12 2 de pending on the direction of rotation un til the valve is completely open at 90 Align the markings on the shaft with the markings on the gland flange 5 Secure the position of the stop screw with its lock nut 6 Apply a signal pressure to match the number of springs see nameplate to the loading pressure connection 7 Turn the other stop screw until the valve is completely closed Align the markings on the shaft with the markings on the gland flange 8 Secure the position of the stop screw with its lock nut 2 1 2 Type 3331 3278 If the valve and actuator have not preassem bled by the manufacturer the actuator is mounted either to the flange lor 2 de pending on the fa
4. Pneumatic Control Valve Type 3331 BR 31a Special version Type 3331 3278 Type 3331 Butterfly Valve Fig 1 Type 3331 BR 31a below and Type 3331 3278 top Mounting and Operating Instructions EB 8227 EN Edition July 2004 Contents Contents Page 1 Design and principle of operation 0 4 2 Installation 6 2 1 Assembling butterfly valve and rotary actuator 6 2 1 1 Type 3331 BR Slay Type SRP up su bed o9 san 6 2 1 2 1 56 3391 53278 3 nee S Ros S UR Ee GS 7 2 2 MOUNTING posillol lt 4a s sse 4b ee PY Bee oe nee 8 2 9 Test connection 8 2 4 Loading pressure connection 8 3 Operation 8 3 1 Changing the fail safe position 8 4 Maintenance 2 2 2 4 1 PACKING oa v 9 9493 9392 dq reason qu eee 9 4 2 Removing the butterfly valve 9 5 Customer inquiries 10 Note Non electrical actuators and valves do not have their own potential ignition source accord ing the risk assessment in the rare incident of an operating fault corresponding to EN 13463 1 2001 paragraph 5 2 and therefore do not fall within the scope of the European Directive 94 9 EC Refer to paragraph 6 3 of EN 60079 14 1977 VDE 0165 Part 1 concerning connection to equipotential bonding system 2 EB 8227 EN Safety instructions General safety instructions The control valve may only be mounted started up or servi
5. ced by fully trained and qualified personnel observing the accepted industry codes and practices Make sure employees or third persons are not exposed to any danger All safety instructions and warnings in these mounting and operat ing instructions particularly those concerning assembly start up and main tenance must be observed The control valves fulfill the requirements of the European Pressure Equip ment Directive 97 23 EC Valves with a CE marking have a declaration of conformity that includes information about the applied conformity assess ment procedure The corresponding declaration of conformity can be viewed and down loaded on the Internet at http www samson de For appropriate operation make sure that the control valve is only used in areas where the operating pressure and temperatures do not exceed the op erating values which are based on the valve sizing data submitted in the or der The manvfacturer does not assume any responsibility for damage caused by external forces or any other external influence Any hazards which could be caused in the control valve by the process medium operat ing pressure signal pressure or by moving parts are to be prevented by means of the appropriate measures Proper shipping and appropriate storage of the control valve are assumed Caution For installation and maintenance work on the valve make sure the relevant section of the pipeline is depressurized and depending on the process m
6. e dium drained as well If necessary allow the control valve to cool down or warm up reach ambient temperature prior to starting any work on the valve Prior to performing any work on the valve make sure the supply air and control signal are disconnected or blocked to prevent any hazards that could be caused by moving parts 8227 3 Design and principle of operation 1 Design and principle of The pneumatic control valve consists of a Type 3310 Butterfly Valve and either a Pfeiffer Type BR 31a Pneumatic Actuator or a SAMSON Type 3278 Pneumatic Actuator The control valve is primarily intended for throttling or on off service in the process en gineering industry and industrial applica tions It is suitable for liquids vapors and gases with temperatures from 10 to 400 C and with nominal pressures from PN 10 to 40 The butterfly valve in nominal sizes DN 100 to 400 can be designed depending on the application with a swing through or an gle seated low noise butterfly disc The ver sion used can be identified by a symbol on the butterfly valve s nameplate The process medium flows through the but terfly valve The signal pressure acting on the pneumatic actuator determines the posi tion opening angle of the butterfly disc 8 and the flow rate across the free area be tween disc and body 1 The shaft is sealed by a packing 5 The ac tuator motion is transmitted over a s
7. hts of the various valve versions 10 EB 8227 EN 8227 11 SAMSON AG MESS UND REGELTECHNIK Weism llerstraBe 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 Internet http www samson de EB 8227 EN S Z 2004 10
8. il safe position The digit 1 or 2 is cast on the flange on the corresponding side of the body The rotary actuator can be mounted either vertically or horizontally on the valve and may be positioned at 90 around the valve as required by the on site conditions over four feather key grooves arranged in stages of 90 around the actuator shaft Installation Valve CLOSED without supply air 1 Undo both stop screws 13 1 and 13 2 at the actuator Rescrew stop screw 13 2 to the point where the grooves of the actuator shaft are positioned verti cally or horizontally to the actuator axis 2 Place disc 8 in closed position 0 angle of rotation 3 Fasten yoke 3 with 2 or 4 screws de pending on the nominal size of the valve to the flange of the shaft 4 4 Slide actuator over shaft 4 and fasten tight at yoke 3 using the four screws 5 Undo stop screw 13 2 again 6 Turn the stop screw 13 2 until the valve is completely closed Align the markings on the shaft with the markings on the gland flange 7 Apply the signal pressure required for the spring range see nameplate to achieve the opening position 8 Turn the stop screw 13 1 until the disc 8 reaches the open position 90 or 70 angle of rotation 9 Secure the position of both stop screws with their lock nuts Valve OPEN without supply air 1 Undo both stop screws 13 1 and 13 2 at the actuator Rescrew stop screw 13 1 to the point whe
9. ody On mounting the valve between flanges in the pipeline place the disc in its closed position Take care not to damage the facings On tightening the flange bolts make sure 8 EB 8227 EN the flat gaskets are compressed evenly The butterfly disc must move without any re strictions when the valve is installed in the pipeline 2 3 Test connection Butterfly valves with a test connection to monitor the packing recognizable by a label and hexagonal screw plug must be equipped with a suitable leakage indicator such as a contact pressure gauge outlet into an open receptacle or sight glass 2 4 Loading pressure connection The loading pressure connection of small ro tary actuators is designed as a tapped G 1 8 hole and G 1 4 in large actuators Connection according to VDI VDE 3845 al lows also the attachment of solenoid valves e g Type 3963 or a limit switch with or without solenoid valve e g Type 3776 2777 In conjunction with SAMSON positioners suitable accessories are available for connec tion 3 Operation 3 1 Changing the fail safe position The fail safe position of the Type 3278 Actuator can be changed from Valve CLOSED without supply air to Valve OPEN without supply or vice versa To pro ceed mount the rotary actuator on the other side Refer to section 2 1 2 The pistons of the Type BR 31a Actuator SRP must be installed in the reverse direc tion in the actuator Note Refer
10. quare ended shaft In Type 3331 3278 a shaft with feather key 4 1 is used to transmit the motion from the actuator to the shaft EB 8227 EN Fail safe positions The fail safe position of the control valve upon failure of the supply air is determined by the version of Type 3331 BR 31a sin gle acting Type SRP or depending on how the rotary actuator is attached for Type 3331 3278 Valve CLOSED without supply air The actuator springs close the valve when the pressure is relieved from the rotary actu ator or when the supply air fails The valve is opened opposing the force of the actuator springs as the signal pressure increases Valve OPEN without supply air The actuator springs open the valve when the pressure is relieved from the rotary actu ator or when the supply air fails The valve is closed opposing the force of the actuator springs as the signal pressure in creases Design and principle of operation Pfeiffer Type BR 31a Actuator 8 4 W Fig 2 Sectional diagram of the butterfly valve N Type 3278 Actuator 13 1 192 13 NANO SS LLLL ISIS RX SS S 7 Swing through Angle seated disc low noise disc Valve body 9 Internal bearing Gland flange 10 Plug Yoke 12 Type BR 31a Shaft Actuator Feather key 12 1 Stop Packing 12 2 Stop screw Spring 13 Type 3278 Actuator Tapered pins 13 1 Stop screw Butterfly disc 13 2
11. re the grooves of the actuator shaft are positioned verti cally or horizontally to the actuator axis 2 Place disc 8 in open position 90 angle of rotation EB8227EN 7 Installation 3 Fasten yoke 3 with 2 or 4 screws de pending on the nominal size of the valve to the flange of the shaft 4 4 Slide actuator over shaft 4 and fasten tight at yoke 3 using the four screws Undo stop screw 13 1 again 6 Apply the signal pressure required for the spring range see nameplate to achieve the closed position 7 Turn the stop screw 13 1 until the valve is completely closed Align the markings on the shaft with the markings on the gland flange Disconnect the signal pressure 9 Turn the stop screw 13 2 until the disc 8 reaches the open position 90 or 70 angle of rotation 10 Secure the position of both stop screws with their lock nuts Or go 2 2 Mounting position The butterfly valve may be installed vertically or horizontally in the pipeline However the following points must be observed for the di rection of flow Mount the butterfly valve in the pipeline so that the lower half of the disc opens towards the direction of the flow This helps prevent any dirt deposits collecting which could pre vent the disc from opening Butterfly valves with angle seated low noise streamlined discs must be mounted without exception with the direction of flow indi cated by the arrow on the valve b
Download Pdf Manuals
Related Search