Flowserve Swing Check Valves 2.5-24 Manual de usuario descargar pdf (Pagina 28)

Swing Check Valves FCD ADENIM0013-00

6.0 ASSEMBLY

(Continued)

MAXIMUM TORQUES FOR FIELD SERVICE (Ft. Lb.)

The following torque values are provided for guidance in filed work. These maximum torque values

provide for a range of friction coefficients without damage to the designated bolting material.

Stud Size

A193

B7 & B16

A193

B8 &B8M

A453

660

A564

630

A574

5/16 -18 11 6.5 12 13 15

3/8 – 16 20 12 20 23 26

7/16 – 14 30 19 30 36 44

½ - 13 45 28 50 55 67

9/16 – 12 70 40 70 80 -

5/8 – 11 90 56 100 110 130

¾ - 10 165 100 165 195 230

7/8 – 9 270 160 280 310 375

1 – 8 400 240 420 470 560

1 1/8 - 8 600 350 600 690 800

1 ¼ - 8 800 500 850 970 1140

1 3/8 – 8 1100 675 1200 1320 1500

1 ½ - 8 1500 900 1600 1750 1970

1 5/8 – 8 1900 1150 2000 2250 -

1 ¾ - 8 2400 1450 2500 2850 3100

1 7/8 – 8 3000 1800 3200 3500 -

2 – 8 3700 2200 3900 4300 4600

2 1/8 – 8 4400 2650 4700 5200 -

2 ¼ - 8 5300 3200 5600 6200 6900

2 ½ - 8 7400 4400 8000 8600 9400

2 ¾ - 8 8700 5900 10400 11600 12800

3 – 8 11400 7800 13000 15200 16900

*Nominal torque values are 20% less than these values.

6.2 Pressure Seal Bonnet Valves

6.2.1 Disc – Hinge Assembly

The disc assembly procedure in a pressure seal valve is identical to the one for flanged bonnet valves

included in section 6.1.1. Refer to it for instructions.

TABLE 2

1 2 ... 23 24 25 26 27 28 29 30

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Flowserve Swing Check Valves 2.5-24 Manual de usuario Pagina 28

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