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Flexflo 887 Series Surge Reliever Manual | 5

Tube Differential Pressure – Flexflo Surge Reliever

Table 1

Valve Size

inches (mm)

Tube/Durometer

ASME Class

DF Minimum

75°F (23.9°C)

psid (bard)

DF Maximum

75°F (23.9°C)

psid (bard)

DF Minimum

0°F (-17.8°C)

psid (bard)

DF Maximum

0°F (-17.8°C)

psid (bard)

4 (100)

ECO 725/40

150

3 (0.2)

7 (0.48)

17 (1.17)

23 (1.58)

4 (100)

ECO 893/50

150

5 (0.34)

13 (0.90)

20 (1.38)

27 (1.86)

4 (100)

ECO 878/65

300

12 (0.83)

30 (2.07)

27 (1.86)

48 (3.31)

4 (100)

NBR 846/75

600

20 (1.4)

51 (3.52)

30 (2.07)

66 (4.55)

6 (150)

ECO 725/40

150

3 (0.2)

6 (0.41)

17 (1.17)

21 (1.45)

6 (150)

ECO 893/50

150

5 (0.34)

12 (0.83)

19 (1.31)

26 (1.79)

6 (150)

ECO 878/65

300

11 (0.76)

28 (1.93)

26 (1.79)

43 (2.96)

6 (150)

NBR 846/75

600

19 (1.31)

46 (3.17)

24 (1.65)

60 (4.14)

8 (200)

ECO 725/40

150

2 (0.14)

5 (0.34)

16 (1.10)

20 (1.38)

8 (200)

ECO 893/50

150

4 (0.17)

9 (0.62)

18 (1.24)

23 (1.58)

8 (200)

ECO 878/65

300

9 (0.62)

22 (1.52)

23 (1.58)

38 (2.62)

8 (200)

NBR 846/75

600

10 (0.69)

23 (1.58)

13 (0.90)

40 (2.76)

10 (250)

ECO 725/40

150

2 (0.14)

5 (0.34)

16 (1.10)

20 (1.38)

10 (250)

ECO 893/50

150

4 (0.17)

9 (0.62)

18 (1.24)

24 (1.65)

10 (250)

ECO 878/65

300

9 (0.62)

23 (1.58)

39 (2.69)

10 (250)

NBR 846/75

600

10 (0.69)

24 (1.65)

23 (1.58)

41 (2.83)

12 (300)

ECO 725/40

150

2 (0.14)

5 (0.34)

14 (0.96)

20 (1.38)

12 (300)

ECO 893/50

150

4 (0.17)

9 (0.62)

18 (1.24)

23 (1.58)

12 (300)

ECO 878/65

300

9 (0.62)

23 (1.58)

39 (2.69)

12 (300)

NBR 846/75

600

10 (0.69)

24 (1.65)

23 (1.58)

41 (2.83)

4 (100)

HNBR 740/85

600

30 (2.07)

66 (4.55)

39 (2.69)

86 (5.93)

6 (150)

HNBR 740/85

600

24 (1.65)

65 (4.48)

31 (2.13)

83 (5.72)

8 (200)

HNBR 740/85

600

15 (1.03)

31 (2.13)

20 (1.38)

40 (2.76)

10 (250)

HNBR 740/85

600

15 (1.03)

30 (2.07)

20 (1.38)

39 (2.69)

12 (300)

HNBR 740/85

600

14 (0.96)

30 (2.07)

19 (1.31)

39 (2.69)

4 (100)

HNBR 744/75

300

20 (1.4)

51 (3.52)

35 (2.41)

66 (4.55)

6 (150)

HNBR 744/75

300

19 (1.31)

46 (3.17)

33 (2.27)

60 (4.14)

8 (200)

HNBR 744/75

300

12 (0.83)

28 (1.93)

26 (1.79)

42 (2.89)

10 (250)

HNBR 744/75

300

11 (0.76)

25 (1.72)

39 (2.69)

12 (300)

HNBR 744/75

300

11 (0.76)

24 (1.65)

25 (1.72)

41 (2.83)

4 (100)

HNBR 745/65

150

13 (0.90)

33 (2.27)

27 (1.86)

48 (3.31)

6 (150)

HNBR 745/65

150

12 (0.83)

30 (2.07)

26 (1.79)

45 (3.10)

8 (200)

HNBR 745/65

150

10 (0.69)

28 (1.93)

25 (1.72)

42 (2.89)

10 (250)

HNBR 745/65

150

9 (0.62)

23 (1.58)

37 (2.55)

12 (300)

HNBR 745/65

150

8 (0.55)

22 (1.52)

37 (2.55)

Note: NBR rubber increases in hardness with decrease in temperature. 40-70 durometer may increase by 14-16 points from

80°F (26.6°C) to 0°F (-17.8°C).85 durometer may increase by 6-9 points from 80°F (26.6°C) to 0°F (-17.8°C).

The following is a listing of the expected “Roll Up” pressures for the various tube materials. These differential pressures should be

used as a guide in setting the jacket pressure. Variations in part machining, tube characteristics and fluids may cause the “Roll Up” to

/- 5%.

DF Minimum: Minimum differential pressure to begin to open tube.
DF Maximum: Maximum differential pressure to fully open tube.

Содержание Flexflo 887

Страница 1: ...Flexflo Model 887 Surge Reliever Instruction Manual Rev C Baker Hughes Data Classification Public ...

Страница 2: ...TICULAR RE QUIREMENTS FOR OPERATION OF OTHER EQUIPMENT AT THE SITE THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CON NECTION WITH INSTALLATION OPERATION OR MAINTENANCE SHOULD FURTHER INFOR MATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT COV ERED SUFFICIENTLY FOR THE CUSTOMER OPERATOR ...

Страница 3: ...red to over come the Tube material s natural resistance to expand the Tube s Minimum Differential pressure or DF Minimum exceeds the Jacket Pressure Set Point of the Flexflo Surge Reliever the Flexflo will start to open and start to relieve the line pressure upstream of the Flexflo Surge Reliever Table Of Contents Product Description 1 Surge Reliever Markings 1 Principles of Operation 1 Installati...

Страница 4: ...sure or add pressure as needed to the jacket however it also will change pressure over time so adjustments will be needed See instruction W 887 15LH B00 1 if this method is chosen Adjusting pressure with a bottle assembly Installation 1 Bottles assemblies are coated to allow them to be buried in the ground with only the top of the bottle s exposed The purpose of embedding the bottles in the ground...

Страница 5: ...d for higher than the maximum pressures required at both the Inlet and the Jacket Loading ports of the Flexflo Surge Reliever 1 Increase the pressure in the Jacket Loading port to a pressure slightly approximately 50 psig or 3 45 barg above the desired Relief Set Point pressure the Line pressure where the Flexflo Surge Reliever will start to open and relieve the upstream pipeline pressure If neces...

Страница 6: ...t Port connection 7 Determine the pressure the 887 Surge Reliever will be fully open Add DF Max to the Jacket Pressure Set Point pressure 41 psid 877 psig 918 psig 2 8 bard 60 4 barg 63 2 barg This is the approximate pipeline pressure where the 887 surge reliever will be fully open 918 psig 8 Verify the Jacket Pressure Set Point pressure will remain constant enough for the application B Direct flo...

Страница 7: ... 23 1 58 23 1 58 39 2 69 12 300 NBR 846 75 600 10 0 69 24 1 65 23 1 58 41 2 83 4 100 HNBR 740 85 600 30 2 07 66 4 55 39 2 69 86 5 93 6 150 HNBR 740 85 600 24 1 65 65 4 48 31 2 13 83 5 72 8 200 HNBR 740 85 600 15 1 03 31 2 13 20 1 38 40 2 76 10 250 HNBR 740 85 600 15 1 03 30 2 07 20 1 38 39 2 69 12 300 HNBR 740 85 600 14 0 96 30 2 07 19 1 31 39 2 69 4 100 HNBR 744 75 300 20 1 4 51 3 52 35 2 41 66 4...

Страница 8: ...ure 6 Turn all tie stud nuts counter clockwise 3 Turn each jacking nut so that the face of the washer is flush with the face of the line flange as shown in Figure 7 below Figure 7 Jacking nuts flush with line flange face 4 Rotating each jacking nut turn at a time spread the line flanges apart so that each flange is tight against the remaining tie nut washers as shown in Figure 8 below Figure 8 Spr...

Страница 9: ... in Figure 12 below Figure 12 Remove the outlet cover plate 9 Remove the outlet body sleeve O ring as shown in Figure 13 below Depending on the assembly the O ring may come out with the cover plate or may remain inside the Surge Reliever body Figure 13 Remove outlet body sleeve O ring 10 Remove the body sleeve and inlet body sleeve O ring as shown in Figure 14 below Depending on the assembly the O...

Страница 10: ...emove tube from core and replace Note A hydraulic press is recommended for removal and installation of the tube If a press is not available it may be preferable to cut the old tube off of the core rather than attempt to remove it intact 13 Replace the tube and core into the liner as shown in Figure 17 below Figure 17 Replace tube and core in liner 14 Replace the body sleeve O rings body sleeve out...

Страница 11: ...ver is installed horizontally and replace the cover plate O rings as shown in Figure 20 below O rings should be evenly covered with a light coat of O ring lubricant prior to installation Figure 20 Re install cover plate O rings 17 Replace the body assembly in the line as shown in Figure 21 below Use caution to avoid O ring damage as the body assembly slides between the line flanges Figure 21 Repla...

Страница 12: ...he appropriate torque value as shown in Figure 24 below Nuts should be tightened in a criss cross or star pattern in a three step process to avoid unbalanced torquing Recommended torque patterns and intermediate and final torque values are found in Table 4 at the end of this procedure Figure 24 Tighten tie nuts to appropriate torque value 21 Replace the jacket loading connections and other fitting...

Страница 13: ... x8 x8 300 10 x8 x10 300 12 x8 x12 300 6 x6 x6 600 8 x6 x8 600 10 x6 x10 600 Table 1 Jacking Nut and Stud Removal Layout NOTE Positions of Jacking Nuts are indicated by hex nut locations Studs for removal are indicated by shaded circles 12 x12 x12 150 14 x12 x14 150 16 x12 x16 150 6 x6 x6 300 8 x6 x8 300 10 x6 x10 300 Table 1 Jacking Nut and Stud Removal Layout NOTE Positions of Jacking Nuts are i...

Страница 14: ...e Class Component Weight Complete Re liever Body Assembly Cover Plate Body Sleeve Tube Core1 Core lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg 12 150 2875 1304 1627 738 145 66 602 273 436 198 418 190 300 4081 1851 1784 809 167 76 606 275 453 206 423 192 600 6436 2919 2485 1127 174 79 937 425 592 269 562 255 10 150 1871 849 912 414 100 45 297 135 220 100 210 95 300 2883 1308 1189 539 121 55 409 185 23...

Страница 16: ...rent information The Baker Hughes logo Flexflo and Mooney are trademarks of Baker Hughes Company Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners BHMY Flexflow 887 IOM 31683C 0920 09 2020 Direct Sales Office Locations Find the nearest local Channel Partner in your area valves bakerhughes com contact us valves bakerhu...

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