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A pyrotechnic valve, also explosive actuated valve, short pyro valve or pyrovalve is a one time use propulsion component often used to control propellant or pressurant systems aboard spacecraft or space probes. The device is activated by an electric signal, upon which one or several small explosive charges are ignited.
The ASME B16 Standardization of Valves Flanges, Fittings and Gaskets Committee, which operates under ASME’s Board on Pressure Technology Codes and Standards is responsible for standards covering valves, flanges, pipe fittings, gaskets and valve actuators for use in pressure services.
Under the UN Dangerous Goods classification, explosive hazard Divisions are awarded using the UN Manual of Criteria and Tests, by following the process flow chart '10.3 Procedure for assignment to a division of the class of explosives' and conducting the appropriate tests either UN series 5, series 6, or series 7 tests. [3]
In April 2009, Cobham agreed to purchase Argotek Inc., a provider of high-end information assurance services to the United States Intelligence Community, for $36 million. [12] In June 2009, a Cobham – Northrop Grumman 50–50 joint venture won the US Army's US$2.4 billion competition to supply Vehicular Intercom Systems. [13]
The clock is ticking for families hoping to send letters to Santa Claus at the North Pole this holiday season.. Letters need to be postmarked by Monday, a spokesperson for the U. S. Postal Service ...
This means that they are installed as a component of the completion string and run in during completion. Retrieving the valve, should it malfunction, requires a workover. The full name for this most common type of downhole safety valve is a Tubing Retrievable Surface Controlled Sub-Surface Valve, shortened in completion diagrams to TRSCSSV.
The two programs took wildly different routes to get to Atlanta. Prior to the Peach Bowl, Texas and Arizona State had met exactly one time in history: 2007, when a Colt McCoy-led Longhorn team ...
The College Football Playoff selection committee enters its final two weeks of deliberation with a host of consequential decisions thrust on the 13 members.