Fisher ET Valve

1. General Introduction

Fisher ET general purpose control valve is used for throttling or on-off control of a wide variety of liquids and gases. It is designed have single ports, balanced valve plugs,and cage guiding. Metal-to-PTFE seating for stringent shutoff requirements is standard in all valves except those with Cavitrol III cages. Metal-to-metal seating for higher temperatures is standard for valves with Cavitrol III cages. Compare to ED series, the standard temperature limits of ET valves is 204℃ can be extended to 232℃ by using PEEK anti-extrusion rings in combination with a spring-loaded PTFE seal. The PEEK anti-extrusion rings expand to close off the clearance gap between the plug and the cage where the PTFE seal may extrude at high temperatures and pressures. The temperature limits can also be extended to 316℃ for non-oxidizing service and to 260℃ for oxidizing service. It mainly come with typical features as below:

Balanced Valve Plug Construction: Balanced valve plug construction permits use of smaller, lower-cost Fisher actuators. Also, trim inventory costs are cut because dimensional standardization permits use of most standard easy-e trim parts.

Cage guide: Rugged cage guiding provides high valve plug stability, which reduces vibration and mechanical noise.

Class V or Class VI Shutoff: Higher leakage rate compare to ED series.

Multi material selectable: Carbon Steel, Stainless, Alloy

Process Connection Type: Flanged, Butt Weld, RTJ, Threaded, Socket Weld

2. Comparable table of Fisher E series Valve

3. ET series Port Diameters, Valve Plug Travel, and Stem and Yoke Boss Diameters

4. Typical section drawings for ET series

• 

  YTA70

• 

  Samson 3241 Globe Control Valve

• 

  DI803 Digital Input Module

• 

  DP840 Pulse Counter

• 

  Samson 3251

• 

  Fisher ED Valve