6
½ 61 45
9
⁄
16 88 65
⅝ 118 87
¾ 206 152
⅞ 328 242
1 488 360
1⅛ 725 533
1¼ 1017 750
1⅜ 1383 1020
1½ 1627 1200
1⅝ 2237 1650
1¾ 3051 2250
1⅞ 4068 3000
2 4475 3300
6 TORQUE VALUES FOR BONNET BOLTING
Bolt nominal diameter (in)
Torque
(Nm) (ft·lb)
HANCOCK CAST STEEL - GATE, GLOBE AND CHECK VALVES
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
NOTES
1. Values are for B7 bolting only. For other materials please consult Hancock.
2. Values listed are based on 45000 psi bolting stress, lubricated with heavy graphite/oil mixture.
Non lubricated bolts have an efficiency of 50% ofthe values stated above.
3. All bolts should be torqued in the bolting sequence shown above to ensure uniform bonnet gasketloading.
Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.
Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Hancock is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions,
Emerson andthe Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be
construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by
our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without
notice.
Emerson.com/FinalControl
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