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Western Hemisphere |
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USA, Houston, Hempstead |
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USA, Houston, Eldridge |
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USA, New Orleans |
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Brazil, Macaé |
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Eastern Hemisphere |
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Aberdeen, Scotland |
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England, London |
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England, Great Yarmouth |
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Norway, Stavanger |
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Denmark, Esbjerg |
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Netherlands, Beverwijk |
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Nigeria, Lagos |
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Nigeria, Port Harcourt |
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Egypt, Cairo |
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Egypt, Alexandria |
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Asia-Pacific |
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Singapore |
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Malaysia, Kuala Lumpur |
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Indonesia, Jakarta |
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Australia, Perth |
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Australia, Darwin |
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China, Shekou |
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China, Tianjin |
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DHF SERIES FIRE RESISTANT GATE VALVES
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API 6FC Bonnet Features: |
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Stem-to-bonnet, metal-to-metal backseat engages in a fire, eliminating possibility of packing burning out and creating new fuel source for the fire |
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All other components will withstand a half-hour burn and cooldown without leaking |
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After valve cools down, the stem packing is replaced and the valve stroked (pressurized valve must not show any significant leakage during test) |
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Metal-to-metal DX® Bonnet Seal is pressure-energized and will not leak due to high temperatures |
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Eutectic Ring positioned above upper bearing face melts in event of a fire or if temperature exceeds 250° |
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If Eutectic Ring melts, valve body pressure forces stem upward and metal-to-metal backseat seal is engaged, isolating valve bore and body pressure from stem packing |
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Spring cartridge engages stem's backseat when Eutectic Ring melts and there is no or low body pressure in gate valve |
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6FA version available for Dril-Quip split gate valves |
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| API 6FA Features: |
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Components of a pressurized valve can withstand a half-hour burn and cooldown and one-time operation without significant leakage |
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The Stem packing is made up of high temperature Teflon® and metal back up ring that can withstand the heat of a half-hour burn. |
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| Designs meet standard API specifications - 6FA and 6FC |
| Metal-to-metal, seat-to-body and seat-to-gate seals |
| Fire-resistant bonnet design |
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