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Rotary Plug Valve Type 73.3

Rotary Plug Valve Type 73.3
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Rotary Plug Valve Type 73.3

Product catalog summary
Overview: The document is a technical data sheet for the Rotary Plug Valve Type 73.3, designed for process engineering and industrial applications. It details specifications, materials, operational principles, and ordering information.
Specifications:
  • Valve Size: DN 25 to DN 250
  • Nominal Pressure: PN 63 to PN 160
  • Temperature Range: -100 to 400 °C (-148 to 752 °F)
  • Materials: Cast/carbon steel or stainless cast/carbon steel
  • Seat Version: Metal sealing, armored or unarmored
Design and Features:
  • Double eccentric design for smooth operation and stable control response.
  • Can be equipped with accessories like positioners and solenoid valves.
  • Available in flanged versions with various face-to-face dimensions.
  • Additional features include TA-Luft packing, heating jacket, and noise-reducing options.
Principle of Operation:
  • The valve uses a double-eccentric design allowing the plug to lift off the seat smoothly, minimizing breakaway torque.
  • Suitable for both directions of flow, with FTC (medium closes) for gases and vapors.
  • Flow characteristics can be modified using positioners or cam disks.
Technical Data:
  • Rangeability: 200:1
  • Opening Angle: 75°
  • Materials: Various stainless steel grades and other materials for different components.
Flow Coefficients: Detailed tables provide Kvs and Cv values for different seat types and flow directions, indicating flow rates at various opening percentages.
Installation and Fail-Safe Action:
  • Installation requires observing the flow direction indicated on the valve body.
  • Fail-safe actions include valve closing or opening without supply air, depending on actuator type.
Ordering Information: Includes specifications for valve type, size, pressure, body material, seat version, flow direction, actuator type, and additional accessories.
Contact Information: VETEC Ventiltechnik GmbH, located in Speyer, Germany, with contact details provided for further inquiries.
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Catalog excerpts

Rotary Plug Valve Type 73.3-1

rift VE TEC Ventiltechnik GmbH Data Sheet Rotary Plug Valve Type 73.3Double eccentric control valve for process engineering and industrial applications Valve size DN 25 to DN 250 Nominal pressure PN 63 to PN 160 Temperature -100 to 400 °C -148 to 752 °F VETEC Type 73.3 Rotary Plug Valve (example with mounted Type R Actuator) Valve body made of • Cast/carbon steel or • Stainless cast/carbon steel Seat version • Metal sealing, armored or unarmored The valves can be equipped with different accessories, such as positioners, solenoid valves and other accessories according to VDI/VDE 3845. Standard version For temperatures from -100 to 400 °C (-148 to 752 °F) Version Flanged version • DN 25 to DN 250, PN 63 to PN 160, face-to-face dimensions acc. to EN 558-1, Table 10, Series 2 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 • Versions for higher and lower temperatures on request

 Open the catalog to page 1
Rotary Plug Valve Type 73.3-2

Principle of operation The shaft/plug arrangement is eccentric (Figs. 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 to lift off the seat smoothly without initial breakaway torque. The valve is not opened suddenly and shows a stable control response even with small opening angles. The rotary plug valve can be used for both directions of flow. Fig. 3: Double-eccentric principle For gases and vapors, the...

 Open the catalog to page 2
Rotary Plug Valve Type 73.3-3

Table 1: Technical data

 Open the catalog to page 3
Rotary Plug Valve Type 73.3-4

3a. seat with metal sealing FTO

 Open the catalog to page 4
Rotary Plug Valve Type 73.3-5

3c. seat with soft sealing Flow rate Table 4: Weight in kg (without actuator)

 Open the catalog to page 5
Rotary Plug Valve Type 73.3-6

Order specifications:

 Open the catalog to page 6
Rotary Plug Valve Type 73.3-7

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

 Open the catalog to page 7

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