75337992
Aug 8, 1997
Mar 13, 2001
travel limiter for checking flow control for safety purposes, namely, a manual verifying mechanism for use as an interface between a valve actuator and a quarter turn valve used as an emergency shut down valve that verifies the operability of the actuator valve package by permitting the actuator valve package to be rotated within a predetermined range of movement without having to completely close the valve
Electrical and Scientific Apparatus