Bulletin 51.1:CP
February 2001
Design CP Control Valve Design CP control valves (figure 1) are globe-style, single-port valves with integral flanges, stem guiding, clamped-in seat rings, and quick-change trim. The Design CP control valve is available with a variety of full-size and restricted capacity trims and various materials ranging from steel to high-nickel alloys. To eliminate cavitation damage in a properly-sized 1-1/2 through 4-inch valve, a CavitrolR III cage is available. To help attenuate aerodynamic noise in gaseous service, Whisper TrimR seat ring retainers are available on 1-1/2 through 4-inch valves.
Features D Compact/Light Weight— The Design CP control valve is designed specifically for Class 150 and 300 service. D ENVIRO-SEALR Stem Sealing to EPA Requirements— Design CP valves are available with ENVIRO-SEAL packing (see figures 4 and 5). ENVIRO-SEAL packing systems provide a superior stem seal to prevent the loss of valuable or hazardous process fluid. They feature live-loading for reduced packing maintenance and can control emissions to below the EPA (Environmental Protection Agency) minimum of 500 ppm (parts per million). Fisher also offers a unique ENVIRO-SEAL bellows seal system for 1/2x1- through 4-inch valves (figure 6) for toxic or lethal service. D Superior Alloy Service Life— Premium high alloy Design CP control valves give longer service life which could result in a lower total cost of ownership. W6507–1 / IL
Figure 1. FloVuet Final Control System (Design CP Control Valve / System 9000 Actuator / FIELDVUER Digital Valve Controller)
D102165X012
D Integral Flange Design— The Design CP control valve integral flange is available in WCC steel, CF3M (316L stainless steel), and various alloys. The integral flange design offers increased safety and improved ease of maintenance over other designs, such as separable flange.