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P-301 Expanded Graphite Packing

I. Definition:
flexible graphite packing is waved by expanded graphite yarns, and it is weaved with different weaving technologies, usually, it is applied in many situations other than strong oxidant, it can be used to seal hot water, high temperature, high pressure steam, heat exchange agent, hydrogen, ammonia, organic solvent, hydrocarbon, low temperature liquid and other seal mediums. It is a unique new compressed seal packing.

II. Usage:
it is used in the pump spindle, cylinder rod, valve rod, interface and other places easy for liquid leakage at the connections of centrifugal pump, reciprocating pump, valve, pipeline and other sections of petroleum, chemical industry, electric power, metallurgy, machinery, papermaking as well as other industries.

III. Categories:
P-301A   Rectangle flexible graphite packing
P-302B   Round flexible graphite packing
P301-1  Cotton yarn cored graphite packing
P-301-1-1Cotton yarn cored graphite packing with stainless steel reinforcement
P-301-1-2 Cotton yarn cored graphite packing with INCONEL wire reinforcement
P-301-1-3 Cotton yarn cored graphite packing with nickel wire reinforcement
P-301-1-4 Cotton yarn cored graphite packing with brass wire reinforcement
P-301-2    Graphite packing with glass fiber
P-301-3    Graphite packing with carbon fiber
P-301-4    Cotton yarn and stainless wire cored graphite packing
P-301C    Cotton yarn cored graphite packing with stainless steel reinforcement outside metal wire net
P-301D    Cotton yarn cored graphite packing with INCONEL wire reinforcement outside metal wire net
P-301E    Graphite Packing Soaked wtih PTEE emulsion
P-301F    Graphite Packing Added antiseptic (it is Zn powder usually)
P-301G    Graphite packing without loss of weight on ignition
P-301H    Graphite packing, high-carbon wire for diagonal

IV. Application:
1.   GLG—201-1,it is applied in low pressure valve, the largest pressure is 5 MPA, and refer to GLG—201-1chart data for other data.
2.   GLG—201-1-1, GLG—201-1-2, GLG—201-1-3, GLG—201-1-4, GLG—201 C, GLG—201 D, they are applied in high pressure valve, and the largest pressure is 25 MPA.
3.   GLG—201-2, it is applied in mediapressure valve, and the largest pressure is 15 MPA.
4.   GLG—201-3, GLG—201 E, they are applied in medium-speed pump and mediapressure valve, and the largest pressure is 15 MPA.

V. Parameter:
Note: 3X3 is twisting instead of weaving.


GLG—201-1chart data 1A

Cross-section area
(mm)

Density
(g/cm3)

g/m

Cross-section area
(mm)

Density
(g/cm3)

g/m

3X3

1.25~1.30

12

8X8

1.15~1.25

97

4X4

1.25~1.30

21

9.5X9.5

1.15~1.25

108

4.7X4.7

1.25~1.30

31

10X10

1.15~1.25

120

5X5

1.25~1.30

32

11X11

1.15~1.25

145

6X6

1.25~1.30

45

12X12

1.15~1.25

172

6.5X6.5

1.25~1.30

53

12.5X12.5

1.15~1.25

194

7X7

1.25~1.30

82

14X14

1.15~1.25

235

15X15

1.15~1.25

270

24X24

1.0~1.10

615

16X16

1.10~1.20

294

25X25

1.0~1.10

677

17.4X17.4

1.10~1.20

348

28X28

1.0~1.10

823

18X18

1.10~1.20

373

30X30

1.05~1.10

945

19X19

1.05~1.15

397

32X32

1.05~1.10

1075

20X20

1.05~1.15

440

35X35

1.00~1.05

1255

22X22

1.05~1.15

532

40X40

0.95~1.05

1600


P-301-1chart data 2

 

Model

Operating pressure
(MPA)

 

PH value

 

Temperature

Linear velocity(m/s)

Centrifugal  separator

Reciprocating pump

Valve

Centrifugal  separator

Reciprocating pump

Valve

P-301-1

3

25

25

 

0~14

-204~1650

40

--

2

P301-1-2

3

25

44

-204~1650

40

2

2

P-301G

3

20

35

-204~1650

0~8

P-301 E

≤25

≤300

0~20


VI. P-301 G:
graphite packing without loss of weight on ignition: its raw material is flexible graphite, and it is a kind of packing reinforced by high quality carbon fiber with high modulus, without loss of weight on ignition. When it is used in valve, preloading once is enough. And it is suitable for the sealing of static stuffing in high temperature.




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