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◆Purpose
Flat gate valve: Class150～900/PN1.0～16.0MPa，work temperature -29～121℃ under pipeline of petroleum, gas, water and oil products, to cut off or connect the medium in pipeline.
◆Specification
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Flat Gate Valve without Diversion Hole is designed with good sealing property, small ON/OFF operating moment upon full pressure difference and with easy maintenance and long service life, and therefore it is extensively used for delivery pipelines of natural gas, petroleum and petroleum products, chemical industry, environment protection, etc., blow-down systems and storage devices of oil and gas, acting as a start-stop device. It is applicable for the pipelines free of pipe cleaning.
◆Standard
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Design standard
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Dimension
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Connect flange
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Inspect and test
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Pressure-temperature
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marks
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JB/T 5298
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JB/T 5298
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JB/T 79
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JB/T 5298
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GB/T12224
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GB/T 12220
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API 6D
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API 6D
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ANSI B16.5
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API 6D
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ANSI B16.34
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MSS SP-25
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◆Material of main parts
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Description
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Material
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JB/T7298
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API 6D
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Body/Bonnet
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WCB
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WCB
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A352-LCB
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A351-CF8M
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Disc
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2Cr13+ENP
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20CrMoV+STL
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ANSI 410+ENP
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ANSI 316+ENP
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Stem
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2Cr13
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2Cr13
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A182-F6a
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A182-F316S
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Seat ring
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25+PTFE
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20CrMoV+STL
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A105+PTFE
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A182-F316+PTFE
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Packing
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NBR/FPM
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Flexible graphite
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PTFE
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Gasket
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18-8/ Flexible graphite
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Bolt
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35
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35CrMo
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A193-B7M
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A193-B8
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Suitable temperature
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-29～250℃
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-29～550℃
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-46～250℃
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-40～200℃
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Suitable medium
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Water, oil products
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Steam, oil products
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Propane,ethylene
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Nitric Acid
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