Knife Gate Valves (KGV) are one of many types of valves available in the fluid control industry. Initially used for handling slurry, KGV gradually became popular in many other engineering applications. Most of these valves are characterized by a particular stuffing box shape that require a rectangular packing installation, not so conventional in valve sealing designs where packings are installed around a cylindrical stem. The actuation methods used with KGV’s are many, from purely mechanical to pneumatic and electrically actuated. The design of those actuators is most dependent of the friction generated by the packing and, therefore, knowing more accurately how packing stress influences gate drag would be of much interest. The intent of this paper is to introduce a testing device and protocol to evaluate how packing friction behaves among distinct packing materials and to establish relations between packing gland load and actuator resistive force. Moreover, values of drag force for the different packing styles are determined with corresponding gland load.
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ASME 2015 Pressure Vessels and Piping Conference
July 19–23, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5695-6
PROCEEDINGS PAPER
Evaluation of Packing Drag on Knife Valves for Actuator Sizing
André F. Garcia,
André F. Garcia
Teadit Industria e Comercio Ltda., Rio de Janeiro, Brazil
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Jose C. Veiga,
Jose C. Veiga
Teadit Industria e Comercio Ltda., Rio de Janeiro, Brazil
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Luiz P. Romano,
Luiz P. Romano
Teadit Industria e Comercio Ltda., Rio de Janeiro, Brazil
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Carlos D. Girão
Carlos D. Girão
Teadit Packing & Gaskets Pvt. Ltd., Vadodara, India
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André F. Garcia
Teadit Industria e Comercio Ltda., Rio de Janeiro, Brazil
Jose C. Veiga
Teadit Industria e Comercio Ltda., Rio de Janeiro, Brazil
Luiz P. Romano
Teadit Industria e Comercio Ltda., Rio de Janeiro, Brazil
Carlos D. Girão
Teadit Packing & Gaskets Pvt. Ltd., Vadodara, India
Paper No:
PVP2015-45773, V002T02A017; 8 pages
Published Online:
November 19, 2015
Citation
Garcia, AF, Veiga, JC, Romano, LP, & Girão, CD. "Evaluation of Packing Drag on Knife Valves for Actuator Sizing." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 2: Computer Technology and Bolted Joints. Boston, Massachusetts, USA. July 19–23, 2015. V002T02A017. ASME. https://doi.org/10.1115/PVP2015-45773
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