Which device opens two or more valves using a single rocker arm?

• A. Valve Bridge
• B. Pushrod
• C. Poppet valve
• D. Valve Seat Insert

Answer: (A)

When one rocker arm needs to open two or more valves, a valve bridge is used. This small bar sits between the valve stems and the rocker, so the rocker’s motion is transferred to each valve stem at once. The bridge keeps the lift of all connected valves equal and synchronized, ensuring both valves open together with the same timing and force. This arrangement is exactly what’s needed to drive multiple valves from a single actuator, which is why the valve bridge is the best answer. The other items aren’t designed to couple multiple valves to one rocker: the pushrod merely transmits motion from the cam to the rocker, the poppet valve is the actual valve being opened, and the valve seat insert is part of the valve seating surface, not a linkage device.