Flowserve 800 Split-Wedge Gate Valve - Manual (Page 16)

16
11.0 BOLTING TORQUE VALUES
At intervals of not more than six months, check the tightness of all bolting. The recommended torque values for all bolting are
shown below:
VALVE SIZE ½", ¾"
Torque (ft-lb)
Part # Size Description Material Nominal Maximum
231 ¼"-20 Yoke Nut A194-2H 10 15
234 ¼"-20 Gland Stud Nut A564-630-1150 1 4
240 5/8"-18 Handwheel Nut Carbon Steel 15 20
VALVE SIZE: 1"
Torque (ft-lb)
Part # Size Description Material Nominal Maximum
231 ¼"-20 Yoke Nut A194-2H 10 15
234 5/16"-18 Gland Stud Nut A564-630-1150 2 6
240 3/4"-16 Handwheel Nut Carbon Steel 25 30
VALVE SIZE: 1½"
Torque (ft-lb)
Part # Size Description Material Nominal Maximum
231 5/16"-18 Yoke Nut A194-2H 20 25
234 3/8"-16 Gland Stud Nut A564-630-1150 4 12
240 1"-14 Handwheel Nut Carbon Steel 50 60
VALVE SIZE: 2"
Torque (ft-lb)
Part # Size Description Material Nominal Maximum
231 3/8"-16 Yoke Nut A194-2H 35 40
234 3/8"-16 Gland Stud Nut A564-630-1150 5 15
240 1"-14 Handwheel Nut Carbon Steel 25 30
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.
800-lb. Split-Wedge Gate Valves FCD ADENIM0002-00