Emerson Bettis GVO-HP-FS Linear, Installation, Operation And Maintenance Manual

Page 1: ...Installation Operation and Maintenance Manual E 90090007 Rev 0 April 2022 Bettis GVO HP SR FS Linear Gate Valve Operator ...

Page 2: ...Notes April 2022 Installation Operation and Maintenance Manual E 90090007 Rev 0 This page is intentionally left blank ...

Page 3: ...f Terms 2 2 3 Scope 3 2 4 Model Identification 3 Section 3 Storage Instructions Storage Instructions 5 Section 4 Operation 4 1 SR Operator 6 4 2 FS Operator 6 Section 5 Preparation 5 1 Tools 7 5 2 Pre Installation Verification 8 Section 6 Installation 6 1 Notes 12 6 2 Lifting 13 6 3 Installation 14 6 3 1 Operator Installation 14 Section 7 Maintenance 7 1 Regular Maintenance 18 7 2 Disassembly 18 7...

Page 4: ...d Stop Adjustment Conditions 29 8 2 FS End Stop Adjustment Conditions 30 Section 9 Testing and Troubleshooting 9 1 Testing 33 9 2 Troubleshooting 33 Section 10 Document Revision Document Revision 36 List of Tables List of Tables 37 List of Figures List of Figures 38 Appendix A List of Drawings A 1 Typical Assembly GVO HP SR 39 A 2 Typical Assembly GVO HP FS 41 ...

Page 5: ...d load Block the power gas supply and depressurize the system before attempting to install or service Isolate the power gas from controls if the operator is supplied with a control system Caustic gases and fluids may be contained in the operators and valves in most applications Vent all poisonous or flammable gases and store all liquids in a safe location to prevent personnel injury Discharge at s...

Page 6: ...e 1 Definition of Terms WARNING If not observed user incurs a high risk of severe damage to operator and or fatal injury to personnel CAUTION If not observed user may incur damage to operator and or injury to personnel NOTE Advisory and information comments provided to assist maintenance personnel to carry out maintenance procedures Term Definition IOM Installation Operation and Maintenance GVO Ga...

Page 7: ...k on the operators For any questions please contact the manufacturer 2 4 Model Identification The Bettis GVO Hydraulic Series represents a broad range of field proven linear valve operators suitable for automating most types of rising stem valves in safety shutdown and control applications Figure 1 shows the typical assembly drawing of Bettis GVO HP SR operator Figure 1 Typical Assembly of GVO HP ...

Page 8: ...down to 8 in stroke a 2 50 in outside diameter drive rod and is low pressure pneumatic spring return with a manual hydraulic override Operators will also be identified with an individual serial number Figure 3 shows the form of the Bettis serial number Figure 3 Linear Valve Operator Serial Number For example a serial number of 00 123456 2 1 represents the first unit on the second line of sales ord...

Page 9: ... of the rod is exposed Lightly grease the exposed surface and wrap with protective material if necessary b SR style operator Drive rod is fully extended from the cylinder The user must protect the rod surface to avoid damage which in turn will compromise and or damage the sealing capability during operation Lightly grease and wrap the rod surface with protective material 3 Lightly lubricate all ex...

Page 10: ... side of the piston 11 pulling the drive rod 1 into the operator Upon loss of supply pressure the operator will fully extend the drive rod in other words valve stem in retraction 4 2 FS Operator FS type operator contains a spring that is located below the piston Therefore under spring stroke spring force will act on the piston to pull the drive rod 1 to fully retracted position To extend the drive...

Page 11: ...orking on the operator Depending upon specific operator task additional tools and materials may be required Vernier measurement ruler A set of SAE combination wrenches and sockets A set of SAE hex keys Strap or pipe wrench small to medium sizes Large size ring wrench hammer wrench Torque wrench with suitable rating Lifting device or a crane complete with slings a pair of shackles or clevises Power...

Page 12: ...available Verify and fine tune if needed the travel adjustment when installing the operator on the valve Before initial installation of the operator on the valve there are several critical measurements and markings to make These measurements and markings cannot be made after the operator is installed and are helpful for checking or adjusting travel please refer to Figure 4 when making measurements...

Page 13: ...April 2022 Installation Operation and Maintenance Manual E 90090007 Rev 0 9 Section 5 Preparation Preparation Figure 4 Measurement of Travel Adjustment for Valve and Operator Mark 3 Mark 1 Mark 2 Mark 4 ...

Page 14: ... of the valve stem Record this value as A A ___________ 2 Actuate the operator to fully extend the drive rod 1 Mark on the swivel connector 80 the distance A up from the bottom of the adapter plate This is MARK 2 Using the Vernier measurement ruler measure from the mark to the bottom of the stem nut Record this value as B B ___________ Also measure from the top of the body of the swivel connector ...

Page 15: ...the bottom of the cylinder plate 4 Record value Z Z ___________ NOTE This will be power stroke by applying pressure through the cylinder plate ports if the operator is SR type CHECK Perform the below calculations Y A Maximum Valve Stem Travel MVT ___________ X Z Maximum Operator Travel MOT ___________ If maximum operator travel MOT is less than or equal to maximum valve stem travel MVT that means ...

Page 16: ...he operator the valve might need to be prepared for installation Any device that would restrict the free movement of the valve stem or prevent installation of the operator e g handwheel or stem nut must be removed Consult valve manufacturer for instructions When connecting to power gas supply be sure to use internally clean pipe or tubing and assure appropriate pressure and flow capacity for the c...

Page 17: ...erator Vertical Lifting Before lifting the operator make sure that the valve has been disconnected from the operator When handling and installing the operator care must be taken especially during rigging and lifting the operator The operator should only be lifted from the lifting lugs located on the end cap shown in Figure 5 NOTE Operators should be lifted with force acting as vertically as possib...

Page 18: ...1 a controlled stroking speed can be used to travel the operator while screwing rotating the stem nut section of the connector onto the valve stem 6 3 1 1 Operator Installation Conditions 1 Condition A Valve Stem Extended Operator Drive Rod Retracted typically FS style operator with drive rod retracted 2 Condition B Valve Stem Retracted Operator Drive Rod Extended typically SR style operator with ...

Page 19: ...lve stem may not remain in fully extended position due to the weight of the operator Threading the swivel connector 80 onto the valve stem will bring the valve stem back to fully extended position 4 Once full engagement is achieved advance the stem nut a half turn to ensure operator stroke is controlled by internal stop of operator and is not limited by valve stroke 5 At the point when the pedesta...

Page 20: ... stem may not remain in a fully extended position due to the weight of the operator Threading the connector onto the valve stem will bring the valve stem back to a fully extended position 5 Measurement B taken in Section 5 2 will provide the required engagement of the stem nut onto the valve stem 6 Once full engagement is achieved advance the stem nut a half turn to ensure operator stroke is contr...

Page 21: ... the operator is not jamming the gate in the valve body 6 Once operator travel is confirmed the setscrews 98 in the connector assembly can be tightened to lock into position Method 2 NOTE The following Method 2 may be used if it is possible to get a hand wrench into the pedestal if equipped to turn the stem nut section onto the valve stem If this is not possible then use Method 1 above 1 Apply ant...

Page 22: ...s are available from the manufacturer as repair kits Lubricant sealant and or other materials are also available from the manufacturer 7 2 Disassembly NOTE Refer to this section only when seals need to be replaced Refer to Section 9 to determine when seals need to be replaced CAUTION Spring is under load To avoid personal injury do not attempt to disassemble or tamper with spring cartridge assembl...

Page 23: ...y 2 For FS style operator Remove pressure from the end cap 8 to fully retract the drive rod 1 For SR style operator Apply pressure to the cylinder plate 4 ports to fully retract the drive rod Refer to Figure 6 and mark the following locations a Mark where the bottom of the cylinder plate 4 falls on the drive rod 1 This is MARK A b Mark the bottom of the stem nut on the valve stem This is MARK B NO...

Page 24: ... 90090007 Rev 0 20 Section 7 Maintenance Maintenance Mark A Mark B Figure 6 Markings for Maintenance Table 3 Parts List Item Description Qty 1 Drive Rod 1 4 Cylinder Plate 1 8 End Cap 1 11 Piston 1 17 Cylinder 1 80 Connector Assembly 1 181 Compression Spring 1 ...

Page 25: ...the current engaged position in order to aid in reassembly CAUTION Remove the end stop cover carefully 33 Pressurized fluid may escape between the threads in the end stop 32 and the end cap 8 c Unscrew the end stop 32 slowly while end cap 8 ports are still pressurized CAUTION Do not remove the end stop 32 completely Pressurized fluid may escape between the threads in the end stop 32 and the end ca...

Page 26: ... will allow the drive rod 1 and piston 11 to be removed completely from the operator 6 Remove stay rod nuts 91 lift lugs 35 end cap 8 upper cylinder seal 55 CAUTION Do not remove stay rod nuts 91 completely from stay rod 22 until spring load is cleared Allowing the end cap to move up slightly will release the spring preload inside the operator Loosening stay rod nuts 91 in pairs with one across th...

Page 27: ...revent the drive rod from turning with the nut To remove a jacknut remove all jackscrews first then unthread the jacknut 11 Remove lower cylinder seal 55 drive rod guide 40 drive rod seal 70 and wiper 44 from the cylinder plate of pedestal assembly 140 NOTE Operator seal can be replaced with the pedestal assembly 140 remained on the valve 7 3 Inspection and Cleaning All parts indicated are noted i...

Page 28: ...nded grease 4 Apply recommended grease lubricant to the sealing surfaces and around the cylinder plate bore when installing the drive rod 1 and piston 11 onto the pedestal assembly 140 Do not rub the bore on cylinder plate 5 If piston 11 and drive rod 1 are disassembled which means piston center seal 52 will be replaced make sure to apply recommended grease prior to attaching the drive rod 1 to th...

Page 29: ...e sure to install the upper cylinder seal beforehand Apply grease to aid in maintaining the seal in position while lowering the end cap 8 to cylinder 17 Make sure ports orientation is correct and the seal is seated properly between end cap and the cylinder before the installation of stay rods NOTE For spring return operator the end cap will be sitting on top of drive rod for FS operator or on top ...

Page 30: ... stop to the end cap a For SR operator Engaged the end stop to previously marked position b For FS operator Engaged the end stop until it makes contact with the drive rod Further steps are required to reach previously marked position 10 Apply anti seize to threads and install swivel connector 80 onto drive rod 1 Ensure that the top of the connector body fits tight against the shoulder on the drive...

Page 31: ...rews 98 Check operator travel by slowly moving the operator to fully retract drive rod 1 a Verify that MARK A made in Section 7 2 aligns with the bottom of the cylinder plate 4 and b Verify that MARK B aligns with the bottom of the stem nut If both A and B above are true this indicates that the adjustment of the travel was not disturbed during maintenance NOTE Perform operator leak tests upon comp...

Page 32: ... its travel limited by operator stops preferably MVT is 1 8 in more than MOT in order to avoid prevent any damage to the valve Refer to Section 8 1 and Section 8 2 if adjustment is needed Refer to Section 4 to confirm the operational style of the fully extended or fully retracted position of each type of operator SR and FS If the end stop is out of adjustment the operator will fall into one of two...

Page 33: ... and end stop cover seal 57 to access the end stop 32 4 The end stop 32 will be loose in the end cap 8 5 Screw the end stop 32 into the end cap 8 until it stops by contacting the drive rod 1 6 Release hydraulic pressure through cylinder plate ports to allow piston to move away from end stop enough to allow one full turn of the end stop 7 Screw the end stop 32 further into the end cap 8 by 1 8 in w...

Page 34: ...nder plate ports to fully retract the drive rod until the operator stops 6 Screw the end stop 32 into the end cap 8 until it stops by contacting the drive rod 1 7 Release pressure through cylinder plate ports to allow piston to move away from end stop enough to allow one full turn of the end stop 8 Repeat steps 7 to 10 of Condition A on previous page to complete the adjustment NOTE The fully retra...

Page 35: ...e cover is removed 4 The end stop 32 will be loose in the end cap 8 5 Screw the end stop 32 into the end cap 8 until it stops by contacting the drive rod 1 6 Reapply pressure through the end cap 8 ports to move the piston 11 away from the end stop 32 CAUTION Pressurized fluid might leak through near the end stop 32 threads Move the piston 11 away from the end stop 32 as far as possible to allow su...

Page 36: ...e rod 1 5 Apply pressure through the end cap 8 ports to move the piston 11 away from the end stop 32 CAUTION Air might leak through near the end stop 32 threads Move the piston 11 away from the end stop 32 as far as possible to allow sufficient time to adjust the end stop 32 6 When the end stop 32 is free remove it from the end cap 8 two to four turns CAUTION Pressurized fluid might leak through n...

Page 37: ...ble solutions of an operator The control and control component troubleshooting is not part of the scope In general unsatisfactory operation of the operator is usually due to insufficient supply caused by leakage Please contact the manufacturer for more detailed information regarding your requirements 1 NO MOVEMENT SLOW JERKY OR PARTIAL STROKE Check for sufficient supply pressure and flow Check to ...

Page 38: ...d to the operator check cylinder ends end stop drive rod and or manual override if applicable for leakage Check the torque value on stay rod nuts if leakage is detected around the cylinder ends Tighten if necessary Replace the seals at the cylinder ends if leakage continues NOTE Please refer to Table 6 to identify the recommended torque Tighten the end stop cover if leakage is around end stop or m...

Page 39: ...ound on an operator that has not been used for a long time Stroke the operator a few times might help the seal to regain its resiliency and eliminate the problem If leakage persists then the seals need to be replaced accordingly NOTE If the problem persists please continue to the next step below 4 VALVE LEAKAGE OR UNABLE TO CLOSE COMPLETELY If leakage is through the line valve itself the valve can...

Page 40: ... Rev 0 36 Section 10 Document Revision Document Revision Section 10 Document Revision Table 7 Revision Overview Rev Date ECN Status By A June 2014 Released Compiled N A Reviewed Checked N A Approved Approved N A 0 April 2022 Migration to New Template Approved J Carroll ...

Page 41: ...1 Definition of Terms 2 Table 2 Parts List 3 Table 3 Parts List 20 Table 4 Specification of Piston Hex Nut Tightening Torque 24 Table 5 Specification of Jackscrew in Jacknut Tightening Torque 25 Table 6 Specification of Stay Rod Nut Tightening Torque 26 Table 7 Revision Overview 36 Table A 1 Parts List 40 Table A 2 Parts List 42 ...

Page 42: ...ical Assembly of GVO HP SR 3 Figure 2 Linear Valve Operator Model Designation 4 Figure 3 Linear Valve Operator Serial Number 4 Figure 4 Measurement of Travel Adjustment for Valve and Operator 9 Figure 5 Lifting Method 13 Figure 6 Markings for Maintenance 20 Figure A 1 Typical Assembly GVO HP SR 39 Figure A 2 Typical Assembly GVO HP FS 41 ...

Page 43: ...April 2022 Installation Operation and Maintenance Manual E 90090007 Rev 0 39 Appendix Appendix Appendix A List of Drawings A 1 Typical Assembly GVO HP SR Figure A 1 Typical Assembly GVO HP SR ...

Page 44: ... Stop 1 33 End Stop Cover 1 35 Lifting Lug 2 V 40 Rod Guide 1 Y 42 Piston Wear Ring 1 Y 44 Wiper Ring 1 Y 52 O Ring 1 Y 55 O Ring 1 Y 57 O Ring 2 Y 70 Polypak 1 Y 72 Polypak 1 Y 80 Connector Assembly 1 85 Trigger Ring 1 90 Heavy Hex Nut 1 91 Heavy Hex Nut 8 97 Hex Socket Setscrew 1 98 Hex Socket Setscrew 2 99 Hex Socket Setscrew 2 140 Pedestal Assembly 1 181 Compression Spring 1 184 Spring Retaine...

Page 45: ...April 2022 Installation Operation and Maintenance Manual E 90090007 Rev 0 41 Appendix Appendix A 2 Typical Assembly GVO HP FS Figure A 1 Typical Assembly GVO HP FS ...

Page 46: ... Cylinder 1 22 Stay Rod 8 V 32 End Stop 1 33 End Stop Cover 1 35 Lifting Lug 2 V 40 Rod Guide 1 Y 42 Piston Wear Ring 1 Y 44 Wiper Ring 1 Y 52 O Ring 1 Y 55 O Ring 1 Y 57 O Ring 2 Y 70 Polypak 1 Y 72 Polypak 1 Y 80 Connector Assembly 1 85 Trigger Ring 1 91 Heavy Hex Nut 9 97 Hex Socket Setscrew 1 98 Hex Socket Setscrew 2 99 Hex Socket Setscrew 2 140 Pedestal Assembly 1 181 Compression Spring 1 192...

Page 47: ...Installation Operation and Maintenance Manual E 90090007 Rev 0 Notes April 2022 This page is intentionally left blank ...

Page 48: ...We reserve the right to modify or improve the designs or specifications of our products at any time without notice For complete list of sales and manufacturing sites please visit www emerson com actuationtechnologieslocations or contact us at info actuationtechnologies emerson com NORTH SOUTH AMERICA 19200 Northwest Freeway Houston TX 77065 USA T 1 281 477 4100 Av Hollingsworth 325 Iporanga Soroca...