Item # item-3680, No. TMH Handwheel Opening Device for Spring to Close Valve On Century Instrument Co.


	Item # item-3680, No. TMH Handwheel Opening Device for Spring to Close Valve


larger image	In the event of loss of operating air pressure on a spring to close valve, the valve an be manually opened by turning the handwheel in a clockwise direction. Upon resumption of operating air service, the handwheel is turned in a counterclockwise direction until it turns free from the top of the spring case. The valve will then be ready to resume automatic operation.