Ball segment valve
8Pages

SOMAS ball segment valve is a control- and shut-off valve. has high capacity. has ball segment and shaft made in one piece, which gives a torque transmission free of backlash. has excellent tightness irrespective of differential pressure. > The SOMAS ball segment valve type KVT with a centrically mounted shaft, and KVX with an eccentrically mounted shaft are of wafer design. Type KVTF is a flanged version with centri- cally mounted shaft while KVXF is a flanged and eccentric design.The valves in this data sheet are of top entry design. Short face to face dimension, low weight and small space requirement make the installation of the these valves very easy. One-piece ball segment and shaft design gives backlash-free operation and accurate control. The shaft is guided in the valve body and stuffing box sleeve. The spring loaded seat is available in PTFE, PTFE 53 and HiCo.The valves can be used for control, as well as for shut-off applications on practi cally every type of media within a wide temperature range. Choose KVT/KVTF for liquids, media con- taining impurities etc. For dry and clean media choose KVX/KVXF. In the KVX/KVXF-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 (LN) trim is available as an option. The designation ֓LN indicates that the ball seg ment 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. In addition the ԓLN trim can tolerate media containing a finite amount of fibers or particles. Ball segment with V-groove is available for use at high fibre concentrations. The V-groove design prevents de-watering at small opening angles.Somas valves are delivered ready for installation and operation. The valve assem blies are deliv-ered factory tested as complete units with actuators, positioners and accessories. Option: KVM-ball segment with V-groove for high fibre concentrations LN (Low Noise)Ball segment with low noise tri m for high P > Ball segment valve type KVTF/KVXF with actuator and positionerBall segment valve type KVT/KVX with actuator and positioner size="-1">

(According to the material in the seat.) Seat Max. working pressure* (bar at C) PTFE-seat (Code A) IEC 534-4 VI (ANSI B16-104 Class VI)PTFE 53-seat > 1 Code 150 170 200 350 >350 (Code B) IEC 534-4 VI (ANSI B16-104 Class VI)HiCo seat (Code T) IEC 534-4 IV alt. V (ANSI B16-104 Class V) A 40 32 З Note 1 > 1 B 40 32 15 ח Note 1 50% PTFE + 50% 316L powder (percentage by weight) T 40 32 25 15 Note 110 bar = 1 MPa Note: Check with Somas* > 100% Flow 0 90 Opening angle NB! Do not exceed working pressure for the valve. >

Wafer design 6 = PN 50 A = 1.4460* KVT (centrically mounted segment) > B = 1.4460*, hard chromed KVX (eccentrically mounted segment) A = 2343-12 G = 1.4460*, hard chromed KVT LN (centr. mounted segment, LN-design) > 2 B = 2343-12, hard chromed U = High nickel alloy (Hastelloy C > ) KVX LN (eccentr. mounted segment, LN-design) > 2 C = 1.4409 Chromium oxide coated bearing area > 1 KVM (segment with V-groove) > 2 T = HiNi (High Nickel alloy ) > 1 1 = Without bearing KVTF (centrically mounted segment) J = 1.4460* 4 = Rulon KVXF (eccentrically mounted segment) K = 1.4460*, hard chromed > KVTF LN...