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VFR Eccentric Rotary Control valve

Overview

VFR Eccentric Rotary Control valve (also called cam-flex control valve) is a novel structure control valve. The gyration center of plug is not concentric with rotary axis, which can ensure the reliable sealing and prolong the service life with a designed eccentricity. Also the eccentric rotary control valve of CEPAI has the characteristics of small size , large flow capacity, wide adjustable range, good sealing performance, large pressure drop applicable, wide temperature range applicable and so on. The valve equipped with pneumatic or electric actuator can meet various requirements of fluid control which is mainly used in the occasions of large viscosity and medium with solid.

Design Features

· Integrated valve body (cast with bonnet) design, no static or dynamic sealing except shaft seal
· Double offset structure design, no "detachment effect" between the seat and plug
· High fluid capacity and range ability for heavy duty industrial design
· Decompress the liquid by inserting multi-hole plate in to the main body
· Built-in type and the combined external type multi-hole plate
· Heat jacket and erosion-proof treatment for crystallizable medium
· Easy replacement of rotary, symmetrical plug and actuator
· Metal seat for Class IV shut-off and Soft seat for Class VI shut-off
· Accessibly connected actuator from outside, which the actuator pivots to axis of valve
· Double sealing system between shaft and bonnet, which makes low leakage (equal to TA-Luft condition)

Technical specifications
Body type: Eccentric plug, rotary style
Size: DN25~DN300 (1.0" to 14.0")
Pressure Class: PN16,PN40,PN64
  ANSI 150,ANSI300,ANSI600
Characteristics: Equal Percentage, Linear
Body Materials: ZG230~450, ZG1Cr18Ni9, WCB, LCB, CF8M,
  CF3M
Trim materials: Hastelloy, B&C, Inconel, Ziconium, Titanium,
  Tungsten Carbide, Ceramic
Connection: Flanged, Wafer type
Gland packing: PTFE, Braided PTFE, Grafoil
Leakage: Class IV (Metal seat, standard), Class V,
  Class VI (Soft seat, zero leakage)
Actuator: Pneumatic diaphragm actuator (VR1, VR2, VR3)
  Electric actuator (316RSA1-10, 316RSB-20,
  316RSC-50, 316RSC-60) or customized
Positioner: High Performance Smart positioner (Explosive
  proof and HART Protocol are available)

Eccentric Rotary Control Valve.PDF

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