Purpose. A carburetor dashpot prevents the engine from decelerating too quickly. It is composed of a cylinder, spring and a shaft that is attached to the throttle. When a driver depresses the gas pedal, the spring applies pressure to the shaft, causing it to close the throttle lever slowly.

How does a dashpot work?

A dashpot is a common component in a door closer to prevent it from slamming shut. A spring applies force to close the door, which the dashpot offsets by forcing fluid to flow through an orifice, often adjustable, between reservoirs, which slows the motion of the door.

What does a dashpot check valve do?

The dashpot controls the last 10% of valve closure to prevent slamming of the disc and reduce water hammer. The valve is effective on shorter length systems with static heads up to the valve rating.