Technologies to watch: Valves
1 Sep 2011
ARI-Armaturen’s new ARI-Safe-FN ANSI full nozzle safety relief valve is VdTUV-approved, certified according to ASME-code and manufactured to the American Petroleum Institute’s API 526 standard. Full nozzles are usually incorporated into safety valves designed for process and high-pressure applications. The accurately centred nozzle in this product assures precise repeatability of the set pressure, claims ARI UK sales director Nick Davies. Optimal guiding of the plug on the seat provides high reliability, while the valve is also extremely durable due to protection against crevice corrosion and corrosion-resistant bellows seal made of Inconel 625, he added.
Emerson has enhanced the ease of use and flexibility of its Fisher Specification Manager valve selection software, which features a sequential process to such tasks as building ISA specification sheets, predicting valve operating noise levels, and exporting dimensional data for Fisher and Baumann control valves. Enhancements include a port diameter attribute to the trim details grid, and updated product data and literature. The revised Fisher IEC valve-sizing engine now includes inlet temperature for liquid sizing.
US pneumatic conveying systems company Cyclonaire’s ball-style diverter valves are built for multiple source convergence and multiple destination divergence of dry materials in either pressure or vacuum modes. The three-way, vortex design is available in seven configurations to accommodate a wide range of piping layouts, while the valve’s actuator rotates up to 135° to enhance installation flexibility.
GE’s new 1900 Series Universal Media Cryodisc safety valve option uses a special disc geometry for cryogenic application of leakage solutions. The design is said to diminish the amount of process fluid lost during a valve leakage and ultimately reduce the potential need for intervention by maintenance personnel. The patented Cryodisc technology, which deflects toward the nozzle to create a tight seal when exposed to isolated cold spots, helps reduce leakage of cryogenic fluids and correct small leak paths. The technology helps customers such as LNG processing facilities curb plant emissions and cut maintenance costs when keeping liquids at cryogenic temperatures.
Shell and Emerson have signed a five-year enterprise framework agreement that makes Emerson the single source supplier of on/off valve actuators to Shell and its affiliates. Emerson will provide products from its range of valve automation technologies, including Bettis pneumatic and hydraulic actuators and EIM electric and electro-hydraulic actuators. Emerson will also provide support of Shell’s previously installed actuators.
Cameron has posted a 72% hike in H2/11 orders to $2.39 billion (£1.46 billion), versus the prior-year second quarter. Record bookings, it said, were established for the drilling, engineered and process valves and the process businesses, including nine deepwater stack and five jackup awards for the drilling business. The process business received two large awards for MEG reclamation units to support deepwater developments.
Tyco’s new Sapag Monovar pressure-control valve is designed to control a highpressure differential in relation to its inlet pressure, particularly in industrial water applications in water distribution, hydro-power and process industries. Its sliding-plate design incorporates one moving plate upstream, one fixed plated downstream and approximately 56 tapered control ports. Significantly, reducing water turbulence, it settles any disturbed water within two lengths of the valve diameter as opposed to the five lengths required for traditional butterfly valves, providing quick flow recovery.
