The body of the valve contains all the necessary parts for it to function. The most common materials used for the body are forged steel and cast steel.
Seats are responsible for valve gate movement. It can also help further sealing of the flow media. For gate valves, there are two seats, depending on the type of gate. For the wedge-shaped valve, for example, the seats on both sides of the valve gate.
Regardless of its design, the gate acts as the primary sealing for gate valves.
The stem is as important as the valve. The combination of the spinning of the stem and the handles raises and lowers the gate.
The bonnet acts as protection and seal to some parts of the gate valve.
Actuators are only present in manually operated gate valves. It includes the hand wheel in where the actual turning to open or close the valve.