... -Y or 33Q-E32 to achieve carriage in the rise, stop, drop, slow-down function. It can also be used to control ... and air controlled directional valve to achieve take power, rise, stop, drop functions. 34QF hand-controlled directional air valve is the heavy ... lifting gas control valve to achieve the rise in car, stop, and drop functions. .Our company has passed ISO9001:2000 Quality Certification ...