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The Taylor R Series trim consists of a multi orifice flow nozzle (MON) and external sliding sleeve. The trim design provides accurate control by the use of a system of precision orifices in the flow nozzle. The orifice configuration produces an equal-percentage flow characteristic offering maximum control throughout a broad range of operation. The exceptionally high turndown ratio (100:1 turndown ratio) provides a broad control range. The result is excellent versatility. What does this mean? One set of trim. Utilizing a cartridge system, all trim and wear parts are attached to the bonnet, making the servicing and inspection of the valve body and trim extremely easy. Hydrodynamic Energy Conversion When the valve is open and flowing, the flow enters through the inlet of the valve into the protective cage, is circulated around the annulus created by the cage, nozzle and sleeve assembly. The symmetry of the ports in the nozzle cause the high velocity fluid streams created by the pressure drop to collide into each other in the center line of the trim. The impact of the streams converts most of the energy and protects the downstream components from erosion.
Multi-Orifice Nozzle Technology The R-B Series control valve features several unique design characteristics that minimize wear and maximize service life. One benefit is the cage and external sleeve trim. It is designed to contain turbulence and wear by centralizing the flow in the nozzle bore causing in stream flow impingement. The valve body and outlet are protected from wear because the energy conversion created by the pressure drop is contained in the trim cavity before flow enters the outlet. This eliminates the typical wear problems in the valve outlet. Another benefit is the balanced sleeve design. This greatly reduces the thrust required to lift the sleeve on and off seat as well as during throttling, making the control valve more user friendly.
Model R2 Heater Choke The Taylor 10,000 psi cwp Heater Choke is among a very select group in its class. The R2 HC is subject to the severe demands of production operation, designed with features to make it one of the most rugged and durable special application chokes. The MOC trim offers the field proven advantages of fluid stream impingement, containing the cavitation within the heavy walled tungsten carbide cage. This configuration delivers a clean, non-destructive flow into the expansion coils that dramatically reduces the incidence of cut out in the heater tubes. The External Sleeve is fully guided on the cage to eliminate stem imbalance, minimize vibration and the resulting noise and wear. The stem seal is a spring-loaded, pressure energized TFE compound that is rated from -75° F to +500° F, making it highly resistant to typical severe service media associated with the drilling and production industries. The tri-seat shut-in seal is designed to provide a long-term positive shutoff. The seat surfaces are not directly exposed to the high velocity flow of the orifice areas. Adjustable chokes can be converted to positive and vice-versa. Consult with Taylor sales personnel for other options. |
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