FOCUS: OIL & GAS
Wednesday, September 26th, 2007Dual-Seal Ball Valves
New dual-Seal Ball Valves from W.O.M. Valves are designed to replace bulky, outdated, expensive slab gate valves and doubleblock-and-bleed plug valves for liquid and gas hydrocarbon transportation.
In 2- to 30-inch bore sizes, 150 to 1500 Class, models employ patented redundant sealing technology: a primary seal and a secondary seal on each side of the trunnion supported ball. There is no pressure drop through the full opening valve plus lower automation costs are lower since it is a quarter-turn valve. These ball valves are for refined products pipelines, pig launchers/receivers, manifolds, or storage and injection wells.
Quarter-Turn Plug Valves
Weco ULT and DR plug valves are premium, quarter-turn valves designed for a wide range of standard and sour gas drilling, production and well-servicing applications. These rugged valves are offered in single- and dual-body designs in pressures to 20,000 psi. They range in size from 1 to 4 inches and come with threaded, Weco wing union, flanged ends, or combinations thereof.
When the valve is closed, the dual segment seal provides the sealing reliability of redundant sealing members on the downstream side of the valve. In 3-inch and larger sizes, the ULT plug valve also employs a two-piece plug and stem design.
Valve and Actuator Package
The TRIAC F91 valve/actuator package from A-T Controls is suitable for oil field, refinery, chemical processing, and other corrosive and caustic environments. The F91 stainless-steel flanged ball valves feature rugged construction, solid unibody and patented pyramidal stem packing, while regularport design minimizes cost and reduces operating torque. To save installation time and work, the valves feature a patented directmount actuator pad and can be ordered pre-assembled with robust, weatherproof WE electric actuator. The ANSIclass 150 valves are available in sizes from 0.5 to 6.0 inches.
Explosion-Proof Solenoid Valve
The new high-flow high-speed EExd Namur Series solenoid valves from Alcon are designed for use in hazardous area/extreme environment applications. Offering universal 5/2 or 3/2 operations in offshore, processing and chemical industries, the series is suitable for piloting single or double actuators on Namur solenoid valves.
An explosion-proof, submersible, watertight and dust-tight aluminium body for indoor or outdoor use, along with Nitrile seals, ensures reliable operation while meeting requirements for a wide range of environments.
These valves are designed for use with actuators controlling butterfly and ball valve systems in hazardous areas found in offshore, paper, recycling, food processing and chemical industries.
Seat Control Valve
Flowserve Corp. announces the Worcester CPT characterized seat control valve. The CPT series ball valve is engineered as a control valve and provides reliable operation and precise valve positioning in the most critical throttling conditions. These valves offer many customizable features that enable them to be used for some of the processing industries’ highestprecision applications.
The valves can be used in systems that control steam pressure or pH levels, operate in low-temperature cryogenic conditions or up to 1000° F (538° C), and meet EPA and OSHA specifications for containing toxic chemicals. Widely used in the oil and gas industry, the CPT has been approved by Factory Mutual for fuel gas safety shutoff service and flow control.
Metal-Seated Ball Valve
Marvin Valve’s MS3000 Series is a heavy-duty, metal-seated ball valve engineered for high pressure and temperature applications with an extended bonnet standard for pipe insulation and enhanced packing. The
MS3000 Series Standard or Full Port Ball Valve is a hard (metal or carbon-seated) valve designed for ease of maintenance with double body seals and enhanced stem packing.
The metal seats are identical upstream and downstream and can be interchanged during routine maintenance, thereby extending the effective life. Designed for applications with pressures to 990 psi (69 bar) and temperatures to 1000° F (538° C), this ball valve is ideal for condensate, steam or gas service.
Valve Controllers
Topworx has recently added a new member to its DXP range of valve controllers. This unit is ideal for the oil and gas industry and other applications that require precise position feedback. The Valvetop DXP with 4-20 mA analog feedback offers an innovative design that is unique to the industry.
The single pushbutton autocalibration feature eliminates zero/span interaction and reduces set-up time by 95%. Reverse directions are automatically accounted for during the calibration process, because it can be calibrated in both actuator/valve rotational directions without adjusting the feedback device position. Simply apply power to the unit, and press the autocalibration button.
Safety Chainwheel
The Babbitt Safety Hammer-Blow Chainwheel allows plant personnel to operate out-of-reach high-pressure valves easily from the floor by the simple pull of a chain without having to climb ladders. This product’s configuration provides a secondary attachment device that prevents the possible danger of a falling hand wheel to which a Babbitt Safety Hammer-Blow unit is attached. With this device, the chainwheel and handwheel are suspended at a safe overhead distance until replacement or reattachment.
These ductile-iron safety chainwheels fit hand-wheel rim diameters from 6 to 36 inches and are engineered to deliver long-term reliability in refining, processing and petrochemical applications. Galvanized, rust-proof, stainless-steel, spark-resistant, brass lock-link chain and Master Links are available.
Series 3000 XPIS Gas Detector
Honeywell Analytics introduces the Series 3000 XPIS gas detector for industrial applications. This robust gas detector utilizes existing two-wire systems to monitor for toxic and oxygen gas hazards in potentially flammable environments.
The device’s intrinsic safety (IS) and explosion-proof hazardous area approval allows the detectors to be wired alongside other field wiring without IS certification. This removes the need for cable segregation as required by IS-certified detectors, making the device both cost-effective and versatile. Operating on a standard 2-wire 4-20mA loop that makes it suitable for new and retrofit applications, the Series 3000 serves a variety of demanding industrial environments: exploration and drilling platforms, production platforms, onshore oil and gas terminals, refineries and chemical plants, power plants, wastewater facilities, utilities and others.
Alarm Analysis Tool
Emerson Process Management has introduced an Alarm Analysis tool designed for its Ovation expert control system. The system is a component of the company’s PlantWeb digital architecture, which delivers process and equipment diagnostics data over digital buses to improve plant operations and streamline maintenance activities. The Alarm Analysis package examines alarm data collected by the Ovation historian,
providing the user with information necessary to minimize unnecessary alarms. This, in turn, enables plant operators to more effectively address real, high-priority issues and focus on actionable items.
This tool offers various statistical analysis functions, including operator response analysis and plant upset analysis, as well as auto-correlation analysis, which considers the causal relationship between alarms, providing additional valuable insight for optimizing the generation and reporting of alarms.
Curved Bill Check Valve
The Curved Bill Tideflex Check Valve from Red Valve Co. is designed to enhance sealing, especially in lowlying areas with little backpressure. The valve is constructed entirely of rubber, making it virtually immune to rust, corrosion and weathering. The curved bill offers increased flexibility to better seal around entrapped debris, and the headloss of the valve remains exceptionally low. Applications include highway runoff, flood control CSO/SSO systems, site drainage, stormwater discharge, sewer systems, coastal discharges, odor control or any application requiring backflow prevention. The valve is available in sizes to 96 inches.
Diaphragm Valve and Control System
The coupling of Burkert’s Type 2031 Diaphragm Valve (1/2- to 4-inch process connections) and Type 8630 TOP Control System provides chemical equipment professionals a variety of intelligent on/off, positioning and proportional control options.
The Type 2031 is designed to accommodate polluted, dirty, abrasive and high-viscosity fluids. Featuring a two-way 316L stainlesssteel body—permitting higher flow rates than those achieved via conventional diaphragm valves—this maintenance-free valve is a suitable alternative to ball valves. The self-draining Type 2031 is corrosion-resistant and built for long service life.
The Type 8630 TOP Control System—the actuator-mounted PID controller or positioner for the company’s line of diaphragm and globe-style valves—features the Process Tune function for optimal control of the 2031 valve. This system, a self-calibrating digital positioning unit, provides on/off and continuous functionality, and also offers self-PID tuning. This allows optimized PID values to be automatically set to control a process, and the set point modulator prevents the loop from becoming unstable and causing system damage.
Electronic Product Configurator
ASCO has released its new electronic Redundant Control System (RCS) series product configurator. From the convenience of a computer, users can build a catalog number of an RCS Rev. C unit. They will also be able to download top level drawings, wiring drawings, SIL information, an O&M guide, and the RCS catalog.
The product configurator is available through the ASCO public site at www.ascovalve.com/RCSConfigurator. The configurator will not only allow the user to build a valid construction, it will also disallow all invalid combinations of features.
Valves for Transformer Oil Applications
Unifin offers a line of heavy-duty transformer oil valves, manufactured under the company’s Cardinal brand. Cardinal valves are specifically designed to meet the demanding requirements of transformer oil applications. To perform reliably under extreme operating conditions, these valves are rated for temperatures ranging from –40º F (–40º C) to 212º F (100º C). All parts are made from non-corrosive or a suitably protected material to withstand outdoor exposure on external surfaces and hot transformer oil on internal surfaces.
These valves are robust in design, so that over-tightening or minor abuse encountered in handling or during factory/field installation will not result in valve malfunction.
Fluoropolymer Diaphragm Valve
A new fluoropolymer diaphragm valve from the Partek operation of Parker Hannifin—the 20 Series—features a flow path and valve seat area that optimizes fluid flow dynamics, for minimal pressure drop and enhanced flow rates, and resistance to aggressive media. As a result, this valve offers a life of more than a million cycles in slurry applications, a greater than 50% improvement over Partek’s standard DI water/chemical valve technology.
Compliant with the SEMI-F57-0301 standard for polymer components, the new valve has a body machined from ultra-high purity PTFE for superior chemical resistance, and a one-piece, precision-machined diaphragm. It is available in three orifice sizes of 1⁄4, 1⁄2 and 1 inch, with port sizes ranging from 1⁄4 to 11⁄4 inches.
FOCUS: COMMERCIAL CONSTRUCTION
Zone Valves
Dwyer’s Series ZV2 and 3ZV2 Zone Valves are made for use with temperature controllers and thermostats to control temperature in HVAC systems. The valves control the flow of hot and cold water in the HVAC system thereby controlling temperature. Units come in two-way and three-way constructions and incorporate a bi-directional motor. They feature an easy push-button removable actuator design for ease of installation.
Supplied in ½, ¾, 1 and 1¼-inch sizes, valves are for use with supply voltages of 120, 24 or 230 Vac. Inputs are floating or modulating with 4-20 mA or 0-10 Vdc.
Differential Bypass Valve
A new Differential Bypass (DB) Valve designed to control excess flow in hydronic systems has been introduced by ITT Bell & Gossett. When there is a reduction in demand, the valve acts as a bypass while ensuring adequate flow to the remaining open circuits. Designed to be used in systems where heating loads may be excluded from the circuit as zone valves close, the differential bypass valve also helps reduce velocity noise caused by excess flow through the circuits while maintaining the pump head at a constant valve.
Developed for hydronic systems utilizing zone valves, the new valve offers the following features: a ¾-inch connection, all-brass body with non-ferrous internals; and a horizontal or vertical installation. Its maximum working pressure is 150 psig and can operate at up to 230° F (110° C).
Rigid Coupling
Victaulic has introduced the Style W89 AGS Rigid Coupling for use exclusively with stainless-steel pipe
Schedule S10 or higher. Developed for use with HVAC and industrial pipe installation to provide an inflexible joint, the coupling greatly reduces linear and angular movement through the use of wedge-shaped coupling housing keys that fully engage the grooves to provide rigidity on valve connections and other points where inflexibility is necessary.
Available in sizes from 14 to 24 inches (350 to 600 mm), these couplings are provided with plated bolts and nuts and FlushSeal gasket Grade “E” EPDM for multiple uses. Grade “T” nitrile and Grade “L” silicone are also available. Offered in standard galvanized steel or painted upon request, the couplings are suitable for use on stainless-steel piping where the corrosion-resistant properties of stainless steel are not required for the external environment.
Pressure Transducer
Setra Systems, Inc. announces the Model 209 pressure transducer. Rated for a variety of cost-sensitive applications, this transducer is made for use in HVAC applications, as well as for fuel cell development, OEM and industrial applications. It is compatible with a number of liquids and gases and contains no seals or “O” rings that could cause leakage. The weather-resistant transducer offers a small footprint (1.62-inch diameter x 2.24 inches, end to end) and is lightweight (3.5 oz). It has a stainless steel/Valox housing, stainless-steel wetted parts, choice of cable, or optional Hirschmann or Packard termination.