A Long Experience in Energy Equipment and one Goal: The Customer s Satisfaction. CB54 CB55 CB56 Control Ball Valves

Transcription

1 A Long Experience in Energy Equipment and one Goal: The Customer s Satisfaction. CB54 CB55 CB56 Control Ball Valves

2 CB control valves series Control Ball Valves of CB series provide an excellent tightness, typical of on-off ball valves with a high rangeability. CB series valves match together the ability to transfer large volumetric flows with the possibility of a precise control action at small flows. By this way it is possible to reach reangeability of 200:1. Moreover the special trims design of CB series provides noise and cavitation abatement. CB series are proposed in two configurations: 1. CB54 with a particular downstream drilled disc especially designed to reduce noise 2. CB55 with internal trim: - MS trim, standard solution: good flow control, low noise and low cavitation trim - MSC trim, for a more precise control at small flows 3. CB56 - segmented ball V- port with simple streamlined ball bore expecially designed for slurried and high viscosity liquid (pulp applications). CB54 in a gas plant CB54 drilled disc Main advantages of these valves series: - High pressure drop capabilities with no operational limitations. - High flow and high rangeability, in order to achieve smaller valve dimensions and cost reduction. - Quick-change trim. - Low torque design: enables to use diaphragm rotary actuator DRA which are the preferable choice for a control service. - Compact body for CB56: the particular shape of the ball permit compact end to end dimension. 2

3 Technical characteristics Body - side entry flanged and fully-welded design. - size: from 2 to rating: from 150# to 2500#. - face to face dimension EN 1349 (EN 558, ASME/ANSI B16.10, DIN , IEC ) - materials: C.S., S.S., duplex, nickel alloys. Ball - CB 55 series with integral trim DN 4, with quick change trim DN 6. - soft / metal to metal seat. - flow direction: - unidirectional: CB 54 - bidirectional: CB55 - unidirectional: CB56 - materials: same as body - coatings: stellited, tungsten carbide, inox as required. CB55 CB55 MSC trim Stem - anti blow-out design. - materials: 17-4-PH, A479 XM19, Inconel 718, A182 F6. - packing: teflon or graphite ring. Bearings - radial bearings: the generous size of these bearings reduces friction during operation and allows a maintenance-free long life. - axial bearings: thrust due to internal pressure is held from an antifriction washer. 3

4 Seat - spring energized self relieving, Double Piston Effect construction upon request. - soft / metal to metal seat (materials: Stainless Steel coatings: stellite, tungsten or chromium carbide) Packing - adjustable by nuts and follower. - seal rings : reinforced braided teflon or pure graphite split-rings. - see table for temperature and pressure capability. Type of packing reinforced braided teflon seal rings Allowable inlet fluid temperature ( C) plain bonnet extended bonnet Max pressure ( bar) C to C C to C 250 bar pure graphite ribbon seal rings C to C C to C No practical limitation Connections - RF / RJ BW - HUB Actuators - Valvitalia DRA Diaphragm Rotary Actuator, for smaller sizes (up to 12 ). - Valvitalia LPS control pneumatic actuator with low friction scotch-yoke. - Valvitalia electric, hydraulic, electro-hydraulic. Leakage class: - Classes IV, IV S1 and V according to IEC , Class VI is also available with soft-seat. RATINGS AND CONNECTIONS Size ( ) BW RF & RTJ From 2 to # # From 26 to # # From 38 tp # # 4

5 CB54 Flow coefficient Cv Size (") Cv max at 90 Std design (1) Low noise (2) Note: 1) Std design with large windows from 55 about 2) Low noise design with small holes along 90 CB54 Sizing Factors (std trim) Opening angle Cv % F L X FZ X T 10 1% % % % % % % % % % ,00 CB-54 Sizing Factors Diagram CV 100% 0,90 90% 80% 0,80 70% 60% 0,70 0,60 50% 40% 30% FL XFZ XT Cv Cv-LN 0,50 20% 10 % 0,40 0% Opening angle 5

6 CB55 MS Flow coefficient Cv Size Cv max at CB55 MS Sizing Factors Opening angle Cv % F L X FZ X T < 10 0,5% % % % % % % % % % CB-55 MS Sizing Factors Diagram CV 1,10 100% 1,00 90% 0,90 80% 0,80 70% 0,70 0,60 0,50 60% 50% 40% FL XFZ XT Cv 0,40 30% 0,30 20% 0,20 10 % 0,10 0% Opening angle 6

7 CB55 MSC Flow coefficient Cv Size Cv max at CB55 MSC Sizing Factors Opening angle Cv % F L X FZ X T < 10 0,5% % % % % % % % % % CB-55 MSC Sizing Factors Diagram CV 1, % 1,00 0,90 90% 80% 0,80 0,70 0,60 0,50 0,40 0,30 70% 60% 50% 40% 30% 20% FL XFZ XT Cv 0,20 10 % 0,10 0% Opening angle 7

8 CB56 Flow coefficient Cv Size Cv max at CB56 Sizing Factors Opening angle Cv % F L X FZ X T 10 1% 0,95 0,64 0, % 0,93 0,62 0, % 0,9 0,6 0, % 0,84 0,56 0, % 0,78 0,52 0, % 0,72 0,48 0, % 0,66 0,44 0, % 0,59 0,4 0, % 0,52 0,36 0, % 0,45 0,32 0,17 CB56 Sizing Factors Diagram 1 0,8 0,6 0,4 Cv FL Xfz Xt 0,

9 CB54 part list ITEM PART NAME 1 BODY 2 CLOSURE 3 STEM 4 STUD 5 NUT 6 OR BODY GASKET 7 GRAPHITE BODY GASKET 8 DRILLED DISC 9 BALL 10 SEAT RING 11 SEAT OR 12 UPPER TRUNNION 13 PACKING FLANGE CB55 part list 14 PACKING STUD 15 PACKING NUT 16 PACKING FOLLOWER 17 PIN 18 ISO FLANGE 19 TRUNNION BOLTS 20 LOWER TRUNNION 21 TRUNNION OR 22 TRUNNION GRAPHITE GASKET 23 SEAT SPRING 25 PACKING BOX SEAT RING (DPE for CB55) MULTI-PATH MULTI- STAGE TRIM (only CB55) 9

10 CB56 part list Item Part Name Q.ty 1 BODY 1 2 CLOSURE 1 3 STEM 1 4 STUD S.F. 5 NUT S.F. 7 BODY GASKET 1 9 SEGMENTED BALL 1 10 SEAT RING 1 11 SEAT GASKET 1 12 UPPER TRUNION 1 13 PACKING FLANGE 1 14 PACKING STUD S.F. 15 PACKING NUT S.F. 16 PACKING FOLLOWER 1 18 ISO FLANGE 1 19 UPPER TRUNNION BOLT S.F. 20 LOWER TRUNNION 1 22 TRUNNION GRAPHITE GASKET 2 23 SEAT SPRING S.F. 25 PACKING BOX S.F. 30 LOWER FLANGE 1 31 PIN S.F. 32 BEARING 2 33 LOWER TRUNNION BOLTS S.F. BASIC MATERIAL CLASSES Temperature range -29 C -196 C -46 C (inlet fluid) +200 C (+340 C note 4) +200 C (+340 C note 4) +200 C (+340 C note 4) Main component MC1 MC2 MC3 Body - Closure A105 (1) AISI 316 A350 LF2 Stem AISI 410 / 17-4-PH XM19 AISI 410 / 17-4-PH Studs A193 B7 / B7M A320 B8M A320 L7 / L7M Nuts A194 2H / 2HM A194 B8M A194 gr.4 / 7M Ball A105 (1) + ENP 75µm (2) AISI ENP 75µm (2) A350 LF2 + ENP 75µm (2) Seat A105 (1) + ENP 75µm (2) AISI ENP 75mm (2) A350 LF2 + ENP 75mm (2) Gaskets OR / Graphite (4) OR or Teflon spring Teflon spring energised energised / graphite (4) / graphite (4) Trunnion AISI 410 / 17-4-PH XM19 AISI 410 / 17-4-PH note 1 note 2 note 3 note 4 - A350 LF2 can be supplied without notice - for MTM ball valves tungsten or chromium carbide coating is provided - All material classes can be supplied with material according to NACE MR01-75, if required - For High Temperature classes (until 340 C) High Temp Loaded Teflon spring energised / graphite are used 10

11 VALVITALIA S.p.A. Headquarter: Via Tortona, Rivanazzano (PV) Italy Ph: Fax: Busto Arsizio (VA) Office VALVITALIA S.p.A. CONTROL VALVES DIVISION Via Mazzini, Bustio Arsizio (VA) Italy Ph: Fax: Padova Plant VALVITALIA S.p.A. - TGT DIVISION Via Campolongo, Due Carrare (PD) Italy Ph: Fax: info.tgt@valvitalia.com Vicenza Plant VALVITALIA S.p.A. - VITAS DIVISION VITAS Plant: Via Soastene, Brendola (VI) VITAS Offices: Via Olmo, 31/ Altavilla Vicentina (VI) Italy Ph: Fax: info.vitas@valvitalia.com Piacenza Plant TECNOFORGE S.p.A. Via Emila Pavese, CastelSanGiovanni (PC) Italy Ph: Fax: tecfor@tecfor.it Internet: Arena Plant TECNOFORGE S.p.A. Via Stazione, Arena Po (PV) Italy Ph: Fax: tecfor@tecfor.it Internet: China Plant VALVITALIA CHINA VALVES CO.LTD. (Suzhou) Wujiang Econimic Development Zone - Jiangshu Province - China Ph: Fax: info.china@valvitalia.com 11 Rev.1.4