View non-flash version
Valve Equipment Guide SKINNER Circle 41 on Reader Service Card Introduced in 1984 by Skinner Engine Company's Power Division, Erie, Pa., the first hydraulically ac- tuated governor valve control for controlling steam turbine speed has performed better than initial expec- tations. The company reports that data gathered from dozens of instal- lations reveal a record of unsur- passed economy, adaptability, and dependability. The Skinner SPR™ System, pow- ered by the Woodward TG-13 con- stant-speed governor, requires few- er adjustments following initial start-up than comparable governor valve controls because it is a closed system with no mechanical wear points. It instantly corrects varia- tions in preset turbine speed with- out the "hunting" for correct speed found in standard mechanical link- age controls. The SPR system is free from the shock loads and backlashes that can cause the levers, arms, and pins of mechanical systems to weaken or break prematurely. The system's elimination of speed correction tur- bulence also helps extend the life of the governor valve, cage, and stem, and the absence of any mechanical linkage reduces maintenance costs. At slight underspeed or overspeed conditions, the movement of a rota- ry actuator in the SPR system ini- tiates a chain of events in the hy- draulic system that opens or closes the steam inlet to provide immedi- ate response to speed variations. The SPR also produces a substan- tial increase in the power available at the governor valve. The system is a retrofit package made for all popular types of single- stage steam turbines. It is available in configurations for Coppus, El- liott, and Terry turbines, with oth- ers available upon application. STACEY FETTEROLF Circle 42 on Reader Service Card Stacey Fetterolf Corporation of Skippack, Pa., manufactures a com- plete range of butt welded or flanged end line blinds for absolute- ly tight shutoff. Standard sizes and materials are in stock ready for shipment. Computer-aided design is available for special needs and cus- tom requirements. The Stacey line blind can be changed quickly and reliably by one man in minutes ver- sus two men in hours, providing quick downstream protection with less maintenance. The blinds are made in all sizes, pressures, materi- als, and codes. STAUFF Circle 43 on Reader Service Card Stauff Corporation, headquar- tered in Waldwick, N.J., manufac- tures 2-, 3-, and 4-way valves in port sizes from Vs -inch to 2-inches NPT and SAE. These valves offer posi- tive sealing and easy operation for a wide range of high-pressure applica- tions. They are available in carbon steel and stainless, with a choice of seat and seal combinations. For superior sealing in hydraulic operations, Stauff ball valves manu- factured with high-strength Delrin® seals handle the highest pressures with ease and safety. These valves have a patented stem seal and ball connection for the ultimate in Vi - turn operation. Constant contact pressure provides a long-lasting seal even in such demanding conditions as high pulsation. A wide variety of valve designs are available to suit every application. STOCKHAM Circle 44 on Reader Service Card Stockham Valves & Fittings of Birmingham, Ala., manufactures an exceptionally broad range of valves of all types and materials. With this wide selection, Stockham can han- dle most any request, whether it is for gates, globes, angles, or checks, in bronze, iron, carbon steel and stainless steel, or quarter-turn valves such as ball, butterfly, or Wedgeplug. In addition, a complete line of cast iron, malleable iron, and ductile iron pipe fittings, along with grooved couplings and fittings, is also available. All Stockham prod- ucts are manufactured to meet strict engineering standards. Stockham's extensive distributor network is backed by the company's own factory sales representatives and eight strategically located Ser- vice Centers that contain large in- ventories. STOW Circle 45 on Reader Service Card Stow Manufacturing Company of Binghamton, N.Y., offers a 39-page catalog titled "Flexible Shafts and Flexible Couplings." The publica- tion gives technical data on solving problems of transmitting rotary mo- tion through angles by use of flexi- ble shafting in place of gears and pulleys, and it provides readers with pictorial and dimensional informa- tion for complete freedom of de- sign. Included in the catalog are sec- tions on standard, short lead time, low-cost units, as well as a section on custom designs and special- material components. TATE ANDALE Circle 46 on Reader Service Card Tate Andale, Inc. of Baltimore (formerly Tate Temco) offers angle valves, cross valves, pressure vacu- um relief valves, and vent check valves, as well as pipeline strainers, hull drainage fittings, deck sound- ing tube fittings, duplex strainers, simplex strainers, and other special- ty marine equipment. The company provides specialty as well as stock items. TELEFLEX Circle 47 on Reader Service Card The Remote Mechanical Valve Actuator (RMVA) developed by the Remote Actuation System Group of Teleflex, Inc., King of Prussia, Pa., eliminates problems associated with current methods of remote valve actuation. The Teleflex RMVA system is based on a simple tension-tension, closed-loop actuating concept. Heli- cal cable, operating in a conduit, converts rotary to linear motion and then back to rotary. The flexibility of the conduit allows the system to make bends without the use of ex- pensive gear boxes. It also elimi- nates the need for costly universal joints by allowing the system to be routed without concern for critical alignments. This simplistic design eliminates the need for regular maintenance and provides a significant cost sav- ings compared with the complex reach rod and flexible shafting ap- plications. Designed to survive the harshest environments, RMVA uses materi- als and SermeTel coatings that are extremely corrosion-resistant. The system has been approved for use on all U.S. Navy surface vessels, and is certified by the American Bureau of Shipping. The system has been in use on Navy ships for more than two years and continues to perform reli- ably. UNION FLONETICS Circle 48 on Reader Service Card The product line of Union Flonet- ics of West Clinton, Pa., includes the R-10 Series of relief valves de- signed to prevent overpressuriza- tion of shipboard piping systems. Built to MIL-V-24332 Specifica- tions, these valves are available in sizes up to 8 inches in bronze or steel.
