Data Sheet Rotary Plug Valve Type 72.3 Double eccentric control valve for process engineering and industrial applications Valve Size DN 25 to 500 NPS 1 to 20 Pressure Rating PN 10 to 40 Class 150 and 300 Valve body made of • Cast steel • Cast stainless steel • Special alloys (Duplex, Hastelloy etc.) • Other special materials on request Seat version • Metal sealing, armored or unarmored • Soft sealing Standard version For temperatures from -100 to +400 °C (-148 to +752 °F) Version Flanged version • DN 25 to 250, PN 10 to 40, face-to-face dimen- Fjg- 1 VEITEC, Rotary Plug ValVe Jy.pe ,72;3 sions acc. to EN 558, Table 12, Series 1 (example wlth mounted Type R Actuator) • DN 300 to 500, PN 10 to 40, face-to-face dimensions acc. to EN 558, Table 3, Series 15 • NPS 1 to 10, Class 150, CL 300, face-to-face dimensions acc. to EN 558, Table 12, Series 37/38 • NPS 12 to 20, Class 150, CL 300, face-to-face dimensions acc. to EN 558, Table 3, Series 15 Further versions • TA-Luft packing/double packing • Heating jacket • Special materials for body and trim • Noise-reducing features • Flange version with tongue/groove, male face/female face according to EN 1092-1 • RF and RTJ according to ANSI B16.5 • Versions for higher and lower temperatures on request The valves can be equipped with different accessories, such as positioners, solenoid valves and other accesso- Fig. 2 VETEC Rotary Plug Valve Type 72.3 Assembly Drawing ries according to VDI/VDE 3845.

Principle of operation The shaft/plug arrangement is eccentric (Fig. 3 and 4). The double-eccentric design of the rotary plug valve is achieved in combination with the offset of the plug's pivot. When turning the plug shaft from closed position in opening direction, the double-eccentric design allows the plug plug to lift smoothly off the seat without any friction, eliminating any breakaway torque. This smooth opening also allows for stable control, even at small opening angles. Fig. 3 Plug movement with Double-Eccentric Arrangement Fail-safe Action In combination with the Type R/M/AT/S actuators,...

Installation An arrow on the valve will indicate the direction of flow the valve has been configured for (fig.6). Fig. 6: Installation into the Pipeline Flow Characteristic The flow coefficient (Kvs/Cv) depends on the opening angle of the valve. Using positioners or cam disks, the natural characteristic of the rotary plug valve can be modified to achieve a linear or equal-percentage characteristic (Fig. 6 and 7). Fig. 8 Equal-percentage and linear Characteristic

Table 1. Technical Data Valve size Style Flange pressure rating Max. operating pressure Overall length Flange bore/form Flow direction Rangeability Temperature range medium Opening angle equal percentage / linear characteristic / ON/OFF up to 200:1

Table 3. Kvs and Cvs Coefficients 3a. Seat with Metal Sealing - FTO

3c. Seat with Soft Sealing - FTCFlow rate 100% Table 4. Weight [kg] (without Actuator)

Order specifications:

VETEC Ventiltechnik GmbH Siemensstraße 12 · 67346 Speyer Telefon: 06232 6412-0 · Fax: 06232 42479 · E-mail: [email protected] · Internet: www.vetec.de Sitz der Gesellschaft: 67346 Speyer · Registergericht: Amtsgericht Ludwigshafen HRB 51677 · USt-IdNr.: DE149689913 · Geschäftsführer: Uwe Vogel