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Major Design Enhancements for New Fuel Shut-off Valve
01 Jun 2002
Higher working pressures and longer life are two of the major design enhancements on the new AMOT 4418F turbine fuel shut-off valve, which also functions as an air start for diesel engines, a fuel gas vent and an on/off control, all with under 100m/sec closing.
Other new benefits include reduced valve noise due to contoured internal flow paths, increased corrosion resistance with an Inconel X750 return spring, improved spool balance, sour gas capability and more competitive cost.
These two way vented or unvented, flanged or threaded valves for 1", 1.5" or 2" pipes have a high flow capacity and minimal leak design. The longer life has been achieved by using PTFE spool seals testing leak tight (Class 6) after 45,000 cycles.
Maximum working pressure at 38(degrees)C has been increased to 100 bar on the ANSI Class 600 RF flanged versions, 50 bar on Class 300 flanged models and 41 bar on NPT versions. All had a previous limit of 27 bar, and the large increases suit new high pressure fuel systems while expanding application capability.
Open/close indication and stainless steel internal are options and a dual fuel back pressure version is available.
Vented versions now also offer increased spool strength, more simple assembly and field replacement of spool seals.
AMOT Controls are based in Bury St Edmunds, Suffolk UK.
Their range of controls can be viewed on their website at www.amotcontrols.com
MJ Information No: 17137
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