KVTF-C/KVXF-C
8Pages

Datasheet Ball segment valve Type KVTF-C/KVXF-C Flanged design Short face to face Nominal pressure PN 25 / ASME Class 150 Nominal size DN 80 - 400 / NPS 3” - 16” Material Stainless steel and • Control-valve shut-off • High capacity • One-piece shaft gives a torque transmission free of backlash • Excellent tightness irrespective of differential pressure • Easy maintenance Option KVMF-ball segment with V-groove for high fibre concentrations • LN Noise) (Low Ball segment with low noise trim for high ∆P The SOMAS KVTF-C is a flanged ball segment valve with centrically mounted shaft and KVXF-C is a flanged ball segment valve with eccentrically mounted shaft. The valve body is in one piece. Face to face dimensions in accordance with EN558:2008-series 36 and ISA 75.04S. Shaft piece is also in one piece for backlash free torque transmission. The spring loaded seat is available in three different materials (PTFE, PTFE 53 and HiCo). The valves can be used for control, as well as for shut-off applications on practically every type of media within a wide temperature range. Choose KVTF-C for liquids, media containing impurities etc. For dry and clean media choose KVXF-C. In the KVXF-C valve the ball segment is eccentrically mounted and rotates out from the seat when the valve is opened. This reduces the wear on seat and segment. Low noise trim is available as an option. The designation “LN” indicates that the ball segment is equipped with a network of bars that are used to split up the pressure drop across the valve. This results in less pressure recovery, thereby reducing the noise and potential damage due to cavitation. Note! Capacity factors will be reduced for valves with LN-trim. Ball segment with V-groove is available for use at high fiber concentrations. The V-groove design prevents dewatering at small opening angles. The SOMAS valves are delivered ready for installation and operation. The valve assemblies are delivered factory tested as complete units with actuators, positioners and accessories.

Liquid pressure recovery factor FL Tightness class The tightness class is related to the chosen material in the seat ring. PTFE seat Code A PTFE 53 seat1 Code B HiCo seat Code T 1 EN 60534-4 VI (ASME B16-104 Class VI) EN 60534-4 VI (ASME B16-104 Class VI) EN 60534-4 IV alt. V (NPS B16-104 Class IV alt. V) 50% PTFE + 50% 1.4435 (316L) powder (percentage by weight) Flow characteristics 100% Flow Pipe geometry factor FP KVTF-C/KVXF-C Valve Pressure and temperature rating According to the material in the seat. Seat Code A B T 10 bar = 1 MPa Note 1: Check with SOMAS 1 NB! Do not exceed working...

Flanged design Sizes and measurements in millimeters (mm). Weights in kilograms (kg). Sizes and measurments in inches (in). Weights in pounds (lb). Flange standard Face to face dimension SOMAS ball segment valves type KVTF-C and KVXF-C are flanged and can be drilled according to PN10/16/20/25 ASME Cl 150. When ordering, please state the pressure rating of the counter flanges. See the valve specification system, code 11 (page 8). Flanged type of valves according to EN 558, Series 36 or ISA 75.04S. For details see the various tables.

Ball segment valve type KVTF-C/KVXF-C with hand lever DN AA BB CC Type Weight 80 HSR20 355 240 210 21 100 HSR20 355 265 235 29 Sizes and measurements in millimeters (mm). Weights in kilograms (kg). Sizes and measurements in millimeters (mm). Weights in kilograms (kg). Ball segment valve type KVTF-C/KVXF-C with hand lever AA BB CC NPS Type Weight 3 HSR20 13,98 9,45 8,27 46 13.98 9.45 8.27 4 HSR20 13,98 10,43 9,25 64 13.98 10.43 9.25 Sizes and measurments in inches (in). Weights in pounds (lb).

Ball segment valve type KVTF-C/KVXF-C with actuator type A-DA Ball segment valve type KVTF-C/KVXF-C with actuator type A-SC/SO X = SC – Spring to close X = SO – Spring to open Sizes and measurements in millimeters (mm). Weights in kilograms (kg). For units with the positioner type SP405, add 2 kg For units with the positioner type SPE405, add 3 kg Sizes and measurements in millimeters (mm). Weights in kilograms (kg). Ball segment valve type KVTF-C/KVXF-C with actuator type A-DA Ball segment valve type KVTF-C/KVXF-C with actuator type A-SC/SO X = SC – Spring to close X = SO – Spring to open...

Sizes and measurments in millimeters (mm). Sizes and measurments in inches (in). Torque in pounds (lbf-in). Capacity factor Kv and Resistance factor ξ for ball segment valve type KVTF-C/KVXF-C DN 80 100 150 200 250 300 350 400 Relation between Kv and Cv: Kv = 0.86 x Cv Sizes in millimeters (mm). Capacity factor Cv and Resistance factor ξ for ball segment valve type KVTF-C/KVXF-C NPS 3 4 6 8 10 12 14 16 Relation between Kv and Cv: Kv = 0.86 x Cv Sizes in inches (in).

Further technical information Technical data for the materials used in the SOMAS valves, flange standard, steam data, etc. can be found or ordered on the of the SOMAS website www.somas.se or in sections 6 of the SOMAS catalogue. Within the process industry and the energy sector there are a number of applications where process data in combination with standard control valves will end up with problems such as high noise level and erosion. These problems are mostly related to cavitation and high flow velocities inside the valve. Note! By using a standard ball segment valve and add a noise...

Selection table KVTF-C/KVXF-C Manual override Ordering State desired valve according to the valve specification system below as well as type of actuator, positioner and accessories. Valve specification system 4 Material – valve body Flanged design A = CF8M 5 Material – ball segment (centrically mounted segment) (eccentrically mounted segment) (cent. mounted segment, Low Noise) (eccentr. mounted segment, Low Noise) (ball segment with V-groove) Bearings – valve body/shaft 1 = Without bearing 4 = Rulon 2 Valve body design T = HiCo (High Cobalt alloy) C = Flanged design (body in one piece short...