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Related Manuals for Vexve BFS400W1
Summary of Contents for Vexve BFS400W1
- Page 1 Butterfly valves Installation, operation and maintenance manual...
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Page 2: Table Of Contents
Actuator installation positions Maintenance Replacing the stem O-ring seal (BFS/BRS valves) Replacing the stem graphite packing (BFC/BRC model) Appendices Parts list for BFS/BRS models Parts list for BFC/BRC models Type code Coupling dimensions, BFS/BRS models Coupling dimensions, BFC/BRC models www.vexve.com... - Page 3 Vexve Oy requires that any faulty products under warranty are to be returned to the factory for inspection. Only after the product has been found faulty, Vexve Oy can grant compensa- tion.
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Page 4: General
1. General Vexve Oy’s butterfly valves are high performance, metal seated, triple offset type butterfly valves designed especially for district heating and district cooling applications. Vexve’s high quality butterfly valves with to- tal bi-directional tightness can be used for shut-off (on/off) and control purposes. Vexve provides models BFS and BRS for shut-off and models BFC and BRC for control purposes. -
Page 5: Valve Identification
Maximum pressure difference when Valve use the valve is closed S = shut-off valve Minimum operating temperature C = control valve Maximum operating temperature Valve size (DN) The type code for Vexve’s butterly valves is presented in Appendix 7.3. www.vexve.com... -
Page 6: Unloading And Storage
If the valve is stored for more than two years, it should be operated and cleaned yearly. Packaging: Vexve’s products are protected during transpor- tation with special packaging. The packaging consists of environmentally friendly materials that are easy to sort and recycle. - Page 7 Figure 3. Lifting a valve equipped with 2 lifting lugs. Figure 4. Lifting a valve equipped with 4 lifting lugs. Figure 5. Storage. www.vexve.com...
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Page 8: Valve Installation
(see Figures 3 and 4). Dropping or incorrect lifting of the valve can result in personal injury or equipment damage. · Use one of the allowed lifting methods shown in Figures 3 and 4. Figure 6. Do not remove the actuator. Figure 7. Do not change factory settings. www.vexve.com... - Page 9 · Install the valve in an allowed position, see chapter 4.2 · See chapter 4.5 for installation instructions of valve with welding ends · See chapter 4.6 for installation instructions of valve with flanges NOTE: The valve must be used only in applications for which it is intended. www.vexve.com...
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Page 10: Valve Location In The Pipeline
Figure 9. Minimum distances, D = pipeline diameter NOTE: Valve should not be installed in such sections in the pipeline where impurities can easily be piled. For example lowest sections of the pipeline should be avoided (see figure 10). Figure 10. Valve location www.vexve.com... -
Page 11: Installation Positions Of The Valve
9. However, if two valves are installed one after the other, the stems must be perpendicular to each other. When installed this way, the loading on the valves is more even and vibration that may otherwise be present will not be generated. www.vexve.com... -
Page 12: Installation In A Horizontal Pipeline
The most recommendable installation position is in a horizontal pipeline with the valve stem horizontal (see Figure 12). The valve can alternately be installed at an angle of max 45° (see Figure 13). Figure 12. Installation in a horzontal position. Figure 13. Installation at an angle. Figure 14. Not recommended positions. www.vexve.com... -
Page 13: Pipeline Supports And Pipeline Reducers
Pipeline supports should not be installed under the valve! If pipeline reducers are used in connection with the valve, additional pipeline supports must be used because of the higher mechanical load on the valve (see figure 15). Figure 15. Pipeline supports. www.vexve.com... -
Page 14: Installation At End Of Pipeline
Instead the valve must remain slightly open to prevent a closed space from forming between the valve and blind flange. If water in the closed space expands (for example due to temperature), it may damage the valve. www.vexve.com... -
Page 15: Welding Procedures
· The recommended installation position for the valve is at an angle (see Figure 19.) or with the shafts in the horizontal position (see Figure 18.). Avoid installation with the shafts fully upright. max 45º Figure 18. Welding the seams. Figure 19. Welding the seams. www.vexve.com... -
Page 16: Installation In A Vertical Pipeline
Ls ≥ L Ls ≥ L L mm · This also facilitates cleaning of the inner surfaces from welding residue and impurities. Figure 21. The recommended method. www.vexve.com... -
Page 17: Installation Of Valve With Flanged Connections
Bolts and nuts must also fulfill requirements of the pressure, temperature, flange material and gasket. For detailed information please refer to the standards EN 1515-1, EN1515-2 and 1515-4. Figure 22. The recommended method. www.vexve.com... -
Page 18: Before Commissioning
5-10°. Decreasing the opening angle increases the velocity of the flow through the valve. This produces efficient removing of impurities from sealing surfaces of the valve. Figure 24. Pipeline needs to be flushed after valve installation www.vexve.com... -
Page 19: Commissioning
1.1 x PN (PN = valve’s max. trim ΔP). When carrying out a pipeline pressure test (1.5 x PN), the valve must be fully open. The tightness of the valve can be ensured after this. www.vexve.com... -
Page 20: Actuator Disassembly And Installation
If the actuator is removed, the actuator may have to be re-calibrated. Vexve Oy accepts responsibility only for actuators installed by Vexve. Refer to the separate adjustment instructions, available from the manufacturer. -
Page 21: Changing The Actuator Installation Position
Set the mechanical limits for the closed position. The opening angle of the valve is 90°. 5.4 Electric actuator Please refer to the separate installation/adjustment instructions, available from the manufacturer. 5.5 Hydraulic actuator Please refer to the separate installation/adjustment instructions, available from the manufacturer. www.vexve.com... -
Page 22: Actuator Installation Positions
Actuator installation positions: butterfly valve / manual gear, butterfly valve / electric actuator Butterfly valve with actuator will be delivered in ABR position as a standard. Please inform us, whether you want to have another option when placing an order. www.vexve.com... - Page 23 Figure 28. Installation position ABR. Figure 29. Installation position AAL. Figure 30. Installation position ARA. Figure 31. Installation position ALB. www.vexve.com...
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Page 24: Maintenance
Impurities can be removed. Close the valve gradually until the disk is open by 5–10 degrees. The increased flow rate effectively dislodges any solid impurities and cleans the sealing surfaces. Vexve butterfly valves are reliable and durable. www.vexve.com... -
Page 25: Replacing The Stem O-Ring Seal (Bfs/Brs Valves)
· Push the O-ring sleeve back in place. We recommend using an insertion tool. · Re-insert the retaining ring and the key. · Install the actuator as instructed in chapter 5. For Part numbers please refer to Parts list, Appendix 7.1. www.vexve.com... -
Page 26: Replacing The Stem Graphite Packing (Bfc/Brc Model)
· Clean the shaft, especially the area in contact with the clamping bush seals. · Install the new sealing rings. · Re-install the sliding bearing and the clamping bush. · Install the actuator as instructed in chapter 5. For Part numbers please refer to Parts list, Appendix 7.2. www.vexve.com... -
Page 27: Appendices
1 pc Lower stem 1 pc Lower stem bearing 1 pc Safety ring 1 pc Lower stem washer 1 pc O-ring 4 pcs Upper stem bearing 1 pc Valve body 1 pc Positioner plate 1 pc Sliding plate 1 pc www.vexve.com... -
Page 28: Parts List For Bfc/Brc Models
Lower stem bearing 1 pc Lock ring 1 pc Lower stem washer 1 pc Actuator base 1 pc Hexagonal nut 4 pcs Washer 4 pcs Hexagonal bolt 4 pcs Valve body 1 pc Positioner plate 1 pc Sliding plate 1 pc www.vexve.com... -
Page 29: Type Code
7.3 Type code Vexve’s butterfly valves are type coded utilizing a maximum of eight (8) characters: Butterfly valve Full bore, DN 300–DN 800 Reduced bore, DN 900–DN 1600 Control Shut-off DN (nominal size in millimeters) with (butt) weld connections with flanges Trim class ∆p = 16 bar (note! body PN 25) -
Page 30: Coupling Dimensions, Bfs/Brs Models
8xM20 2 x A 28x16x160 8xM30 1000 2 x A 32x18x160 8xM30 1200 2 x A 32x18x160 8xM30 1400 2 x A 36x20x200 8xM36 1600 2 x A 45x25x220 12xM36 Note: Valves made before 6/2020 have only one key. www.vexve.com... -
Page 31: Coupling Dimensions, Bfc/Brc Models
2 x A 25x14x110 8xM20 2 x A 25x14x110 8xM20 12,5 2 x A 28x16x160 8xM30 1000 12,5 2 x A 32x18x160 8xM30 1200 12,5 2 x A 32x18x160 8xM30 Note: Valves made before 6/2020 have only one key. www.vexve.com... - Page 32 Vexve Oy Pajakatu 11 Riihenkalliontie 10 38200 Sastamala 23800 Laitila Tel. +358 10 734 0800 www.vexve.com Finland Finland vexve.customer@vexve.com...