A brake handle is a handle or rod-like device used to control and operate a gate valve. Gate valve is a commonly used closed valve that controls the flow of media by moving the gate (also known as gate) up and down. The brake handle is used to control the up and down movement of the gate, so as to adjust the flow of the medium.

Brake handle is usually made of metal, plastic and other materials, with a certain strength and corrosion resistance. It can be connected to the gate valve gate plate, through rotation or push and pull to achieve the motion of the gate plate. When the brake handle moves up or down, the ram rises or falls accordingly, opening or closing the valve.

The brake handle usually has a mark and scale to indicate the position and opening of the ram. By rotating or pushing the brake handle, the position of the gate can be controlled to adjust the opening of the valve. The design and operation mode of the brake handle vary according to different gate valve types and application requirements, including spiral brake handle, handwheel brake handle, hand pull brake handle, etc.

The brake is widely used in industry, chemical industry, water treatment, oil, natural gas and other fields to control and regulate the flow and pressure of the pipeline medium. It has the characteristics of simple, reliable, easy operation and maintenance, and is a common valve control device.