Unique Actuator Selection Slide Chart Available From Jamesbury Corp.

Information normally requiring references to 20 or more catalog pages is contained in a new onlyof- its-kind Actuator Selection Slide Chart available from Jamesbury Corp., Worcester, Mass., a Combustion Engineering company.

With the Actuator Slide Chart, the user selects the type of Jamesbury valve (screwed end ball, flaged ball or high performance butterfly) and sets the slide of the Valve Torque Guide to the maximum differential pressure of the planned application.

Torque requirements for available types and sizes are read from the moving scales of the tables, which also reflect variations, such as seat material, trunnion or non-trunnion design in ball valves, and shaft upstream or downstream in butterfly valves. Valve sizes covered range from ^-inch to 60-inch.

The user, having determined the torque requirement of the application, turns the Slide Chart to the Actuator Selector side and selects from Jamesbury's seven general types an actuator best suited to the application.

For pneumatic and hydraulic operation, there are double-acting piston, spring-piston and spring diaphragm actuators.

Available air pressure is selected from the tabulations; torque requirements are set on the movable slide; and the user is rewarded with the designation of the actuator or actuators that will do the job.

For Jamesbury electric and manual gear actuators, non-movable tables give designations to meet the required operating torque.

Actuator torque outputs range from 4 to 6,250 ft. lbs.

For more information and copies of the Actuator Selection Slide Chart from Jamesbury Corp., Circle 44 on Reader Service Card

Maritime Reporter Magazine, page 99, Jun 1985

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.