This document describes the specifications and features of the Si-110 EN ball segment valve. The valve can be used for control and shut-off applications with various media, within a wide temperature range. The valve body and shaft device are designed as one piece, allowing for backlash-free torque transmission. The spring-loaded seat is available in three different materials (PTFE, PTFE 53, and HiCo). The eccentrically mounted ball segment reduces wear on the seat and segment. The valve can be equipped with low noise trim. A V-groove design is available for use with high fiber concentrations.
This document is a technical datasheet for the SOMAS ball segment valve series, specifically types KVTW/KVXW (wafer design) and KVTF/KVXF (flanged design). The valves feature one-piece stainless steel bodies and shafts to ensure free torque transmission without backlash. They are designed for control and shut-off applications across a wide range of media and temperatures.
| Nominal pressure PN | 25/20/16/10 |
|---|---|
| Nominal size DN | 80-500 |
| Material (Body) | Stainless steel |
| Tightness class (PTFE seat) | IEC 534-4 VI / ASME B16-104 Class VI |
| Tightness class (HiCo seat) | IEC 534-4 V alt. V / ASME B16-104 Class IV alt. V |
| Flange standard (Flanged types) | EN 558, Series 15 |
KVTW has a centrically mounted shaft while KVXW features an eccentrically mounted shaft.
The KVT series (KVTW/KVTF) should be chosen for liquids and media containing impurities.
The capacity factor Kv is calculated as 0.86 times the resistance factor Cv.