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Orifice meter with isolation valve on the carrier
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Line removable valve structure with extensible seal rings on pipeline support structure
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Orifice meter with isolation chamber seal on the orifice disc carrier
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Line removable valve structure with extensible seal rings on valve cartridge
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Line removable ball valve
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Orifice meter with rotatable isolation sealing member
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Orifice meter with isolation valve on the carrier
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Fire safe expansible tube type valve
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