Vexve Butterfly Valve User Manual
Contents
1. 1 If the valve is stored for a longer period of time the valve needs to be closed lightly for the storage 2 Always readjust the stop screw after mounting the actuator 3 Please do not exceed the manufacturer s closing torque values when closing the valve The closing torques for Vexve butterfly valves can be found from a separate table If you have additional questions on the closing torques or and valve installation please consult with the manufacturer 7 2 1 Electric and Pneumatic Actuator Mounting Installation The electric or pneumatic actuator installation should be done according to the actuator manufacturer s instructions Vexve Butterfly Valve User Manual Contruction of Vexve Type BFC 1 Hexagonal nut 2 pcs 2 Base plate 2 pcs 3 Headless screw 2 pcs 4 Clamping bush 1 pcs 5 Slide bearing 1 pcs 6 Shaft packing 4 pcs 7 Bearing of the upper shaft 1 pcs 8 Key 1 pcs 9 Upper shaft 1 pcs 10 Identification plate 1 pcs 11 Pin 3 pcs 12 Disc 1 pcs 13 Disc seat 1 pcs 14 Lower shaft 1 pcs 15 Bearing of the lower shaft 1 pcs 16 Lock ring 1 pcs 17 Blind flange 1 pcs 18 Actuator base 1 pcs 19 Hexagonal nut 4 pcs 20 Base Plate 8 pcs 21 Hexagonal screw 4 pcs 22 Body 1 pcs 23 Positioner plate 1 pcs 24 Bearing plate 1 pcs 12 13 15 23 16 lt gt 24 17 Vexve Butterfly Valve User Manual Contruction of Vexve Type BFS 1 Retaining ring 1 pcs 2 O2. Lift the valve as shown in the picture Do not lift the valve from its actuator or stem The weight of the valve should be always taken care when handling the valve Vexve Butterfly Valve User Manual 5 Installation and Welding to the Pipeline Remove the valve flow port protectors before the installation Check that the valve is undamaged and clean inside Do not remove the manual gear or actuator unnecessary from the valve If the manual gear or actuator needs to be removed during the installation please follow the actuator manufacturer s instructions how to adjust the actuator when reassembled It is recommended to install the valve according to the flow direction arrow The valve may only be installed to the applications and places that it is designed If you are uncertain about the valves applicability for your intended purpose please contact Vexve Oy for more information Do not exceed the valve performance limitations Maximum operational pressures and temper atures can be found from the valve identification plate Special Instructions Corners Elbows amp Pumps After corners and centrifugal pumps the pressure on the outer edge is higher than on the inner 6 edge When installing the butterfly valve immediately after a pipe elbow we need to install the valve to the pipeline so that the shaft is directly at a 90 degree angle to the corner s middle point perpendicular please see picture 1 When installing the
3. Vexve Butterfly Valve User Manual VEXVE Table of Contents 1 General 3 2 General Instructions and Cautions 3 Valve Markings 4 Transportation and Storage 5 5 Installation and Welding to the Pipeline 6 6 Commissioning 7 Maintenance 7 1 Stem s Graphite Packing and Tightening BFC 8 7 2 Manual Gear Installation 8 7 2 1 Electric Pneumatic Actuator Mounting installation 9 Contruction of Vexve Type BFC 10 11 Contruction of Vexve Type BFS Vexve Butterfly Valve User Manual 1 General Vexve butterfly valves are designed for control and or closing use especially for district heating and distribution pipelines Vexve BFC type butterfly valve can also be used in steam pipelines as well as district heating and distribution pipelines The valves are designed and manufactured in Finland by Vexve Oy The Butterfly User Manual provides valuable information on Vexve BFC and BFS butterfly valves Actuators and other accessories are only discussed briefly in this manual Additional information from Vexve valve products can be found from the individual product bro chures Materials The valve body is pressure equipment steel The stem shaft and disc are manufactured from the stainless steel The disc seal material is nickel alloy steel The stem shaft seals are either O rings BFS Type or graphite packing BFC Type depend
4. d the manufacturer s informed maximum temperature and pressure ranges Please see the valve identification plate Vexve Butterfly Valve User Manual 3 Valve Markings A valve identification plate is located on the side of the actuator flange O 20000 Type BF S1000W 0001001 2004 Ap 25 bar 200 C VEXVE eG 45 0409 Valve Manufacturer Valve Product Number Stamp Number first 4 numbers Individual Valve Number last 3 numbers Valve Type B Butterfly valve Product Group F Full Bore R Reduced Bore Valve Function S Shut Off Valve C Control Valve Valve Size DN Connection to the pipeline W Welding Ends F Flanged Ends Manufacturing Year Russian Valve Certificate CE Mark and the number of the the notified body Pressure Class Approved maximum pressure difference when valve is closed Approved minimum operational temperature Approved maximum operational temperature Vexve Butterfly Valve User Manual 4 Valve Transportation and Storage Please check that the valve or its parts are not damaged during the transportation Store the valve at clean and dry storage before the installation Do not remove the flow port protec tors before the installation During storage the valve must be lightly closed Please be careful when closing the disc The disc creates a powerful cutting motion with its sharp edges during the valve closing
5. ing on the end application Tightness The valve is bi directionally tight 2 General Instructions and Cautions Please read the following general instructions and safety precautions before handling and operat ing the Vexve butterfly valve The valve should be lightly closed during the storage Do not lift the valve on the actuator or on the gear Please follow the instructions from page 5 valve lifting The weight of the valve should be always taken care when handling the valve Any lifting device used to move the valve shall be of sufficient size to support the weight of the valve Beware of the discs cutting movement The disc creates a cutting motion with its sharp angles during the valve closing The valve may cause noise at the pipeline Please be prepared to be protected against the noise The installed valve in the pipeline can be extremely hot Be protected to different temperatures The manual gear or actuator may not been removed or dismantled if the valve is pressurized It is recommended to use a special tooling and equipment designed for actuator removal when disassembled the valve The shaft O ring or graphite packing may not be dismantled when the valve is pressurized Valve may not be used alone as a pipeline ending fitting Always after the valve a blank flange need to be welded or and connected to the pipeline end Do not exceed the manufacturer s informed closing torques Do not excee
6. ring bushing 1 pcs 3 Key 1 pcs 4 Identification plate 1 pcs 5 Upper shaft 1 pcs 6 Pin 3 pcs 7 Disc 1 pcs 8 Disc seat 1 pcs 9 Lower shaft 1 pcs 10 Bearing of the lower shaft 1 pcs 11 Lock ring 1 pcs 12 Blind flange 1 pcs 13 O ring 4 pcs 14 Bearing of the upper shaft 1 pcs 15 Body 1 pcs 16 Positioner plate 1 pcs 17 Bearing plate 1 pcs 12 Vexve Oy Pajakatu 11 FIN 38200 Vammala Finland Tel 358 3 51 831 Fax 358 3 5183 4241 vexve vexve fi www vexve fi
7. screws and their location can be seen from the construction picture 1 Hexagonal nut at the page 10 The valve may cause noise at the pipeline Please be protected against the noise 7 2 Manual Gear Installation The manual gear or actuator may not been removed or dismantled from the valve if it is pressur ized It is recommended to use a special tooling and equipment designed for manual gear removal when dismantled the valve gear Vexve Butterfly Valve User Manual Manual Gear Installation Close the valve gear to the shut off position Clean the valve stem and gear bush from all the contamination Crease the manual gear s bush e g Spray Vaseline Wurth HHS 2000 Install the manual gear so that the hand wheel locates at the preferred position Crease and install the nuts screws and plates Install the hand wheel to the manual gear Turn the hand wheel 2 3 rounds to open the valve Turn the butterfly valve closed up to the manufacturer s informed closing torque When the valve is at the closing torque tighten the closed position screw Then turn it back 1 4 turn 10 stop screw it will be locked up either with the locking screw or with the locking sealant 11 Turn the disc 90 degrees to fully open position 12 Tighten the stop screw for open position and lock it with locking screw or locking sealant Seto Se The stop screw for closed position The stop screw for open position NOTE
8. sure shocks it is always recommended to use bypass valves with larger valves Vexve Butterfly Valve User Manual 6 Commissioning The pipeline needs to be flushed carefully after the valve installation Close the valve during the flushing until the disc is open app 5 The small angle s increased flow cleans efficiently the pos sible contamination from the valve s sealing surfaces During the commissioning the valve opening will be set to 15 degrees angle to minimize the poten tial pressure peak impact to the valve When installing the BFC valve type the graphite packing tightness needs to be checked If needed to tighten tightening the hexagonal screws to tighten the packing Please see the chapter 7 1 Do not exceed the manufacturer s informed maximum allowable torque valves 7 Maintenance The valve does not need regular maintenance In the following chapters three most potential main tenance issues are clarified When preparing for the maintenance please note that the valve s surface temperature can be dan gerously high or cold when the valve is installed to the pipeline Be prepared against the potential accidents 7 1 Stem s Graphite Packing and Tightening BFC The BFC model has graphite packing and the packing should be checked on a regular basis If there is leakage from the stem packing the stem packing should be tightened by tightening the hexagonal tightening nuts screws from the stem The tightening
9. valve after centrifugal pump the valve shaft needs to be perpendicular at a 90 degree angle to the pump shaft please see picture 2 It is always recommended to install the valve so that the valve shaft is in horizontal position This minimizes the forces to the valve disc bearings However if two 2 valves are installed in line in close proximity then the valve shafts need to be at a 90 degree angle perpendicular versus each other Picture 2 Picture 1 Vexve Butterfly Valve User Manual Electric welding is used when welding the welded end valves to the pipeline The valve needs to be closed during the welding If the valve will be welded to vertical pipeline close the valve and cover it at least with 4cm water cushion This water cushion will then ensure that the welding spatters from the welding procedure cannot damage the sealing and disc surfaces The valve should be welded to the pipeline so that 5cm seams are welded to the opposite sides of valves at the beginning as shown in picture in the right 1 2 3 After welding the short seams e g 6 short seams around the valve you can continue the welding by welding the un welded seam parts and finish welding Valve may not be used as a line ending fitting alone Always after the valve a blank fl ange needs to be welded or and bolted to the pipeline Also the backside empty space needs to be filled with unoxygenous water to prevent the corrosion To minimize the pres
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