Dedenbear Offers The Same Valves Used To Control The Speed Of Their Co2 Actuated Throttle Stops For Purchase Separately For Custom Devices. Integrated Lock Ring Prevents Vibration From Changing Your Valve Setting. All Dedenbear Needle Valves Feature 1/8 Npt Male Thread On The Cylinder Side And A Nylon Tube Quick Disconnect On The Other. Use Meter In Valves For Single Acting Cylinders (Air On) To Control The Opening Rate, Or Use 2 Meter Out Needle Valves On Dual Acting Cylinders (Air On / Air Off) To Control Both The Opening And Closing Rates.