Gate valve stem packing seal
Spring energized valve stem packing contributes to the overall performance of industrial operations. They serve the vital task of keeping oil and liquids in while keeping contaminants out.
A valve stem packing assembly in the form of a stacked array, comprising
(a) a plurality of seal ring elements each having a generally V-shaped cross-sectional configuration;
(b) a plurality of backup/energizing rings interspersed between and in supportive relationship with the seal ring elements, said backup/energizing rings having a generally Y-shaped cross-sectional configuration;
(c) a spring-energized lip seal ring adjacent one of the backup/energizing rings, said lip seal ring including a central base and a pair of sealing lips extending therefrom whereby the lip seal ring has a generally U-shaped cross-sectional configuration;
(d) an adapter ring having a generally T-shaped cross-sectional configuration and extending into a supportive relationship with the lip seal ring to prevent dislocation of said seal ring when the packing assembly is in functional position between a valve stem and a surrounding valve element, and said valve stem is cycled in a translatory manner.
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Advantages:
1. Meet API standards for design, materials, function and performance
2. Sizes ranging from 2-1/16” to 7-1/16”
3. Pressures ranging from 5,000 to 15,000 PSI
4. PR2 tested
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Working Conditions
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Working Pressure
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Working Temperature
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Working Medium
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Material
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5000~20000 PSI
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PU, LU, PX, LX, KU, KX
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Hydraulic fluids, crude oil, sour oil/gase, H2S, salty water
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PEEK, Elgiloy/SS steel, Filled PTFE
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Application Suggestion:
FLS valve, FLS-R valve
Size:
From 2-1/16” and 7-1/16”
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Pressure Level
psi
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Inch
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MM
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Stem size
d
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Outer diameter of groove
D
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H
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Stem size
d
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Outer diameter of groove
D
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H
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10K/15K
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1.000
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1.790
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-
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25.40
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45.40
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28
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1.000
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1.750
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-
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25.40
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44.40
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28
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1.250
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2.040
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-
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31.70
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50.80
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35
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1.250
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2.000
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-
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31.70
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50.80
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28
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1.500
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2.290
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-
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38.10
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58.10
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-
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1.610
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2.380
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-
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41.00
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60.50
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-
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1.750
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2.500
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-
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44.45
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63.58
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-
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2.000
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2.790
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-
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50.80
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70.80
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-
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