Flowserve 1878 Swing Check Valve Manual do Utilizador descarregar pdf (Página 10)

1878 Swing Check Valves FCD ADENIM0006-00

11.0 Bolting Torque Values

At intervals of not more than six months, check the tightness of all bolting. Bolted bonnet valves should have the body-bonnet

bolting torqued to the values shown below:

STUD SIZE SA193-B7 SA453-660

Nominal Maximum Nominal Maximum

5/8-11 59 90 50 100

3/4-10 104 165 88 175

All torque values are in ft-lbs.

NOTE: The above table provides nominal design torque values and maximum torque values using an assumed friction coefficient

of 0.2. The maximum torque values provide for material conditions such as rust and oxides that exist after equipment is in

service.

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Flowserve 1878 Swing Check Valve Manual do Utilizador Página 10