CB/T4029-2005 Class J flange bronze 0.5MPa packing cock

Pressure Gauge Cock is a valve with simple structure, fast opening and closing, and small resistance. Pressure Cock is usually operated by a handle. When the handle of the plug valve is parallel to the valve body, it is in the fully open position. When the handle of the plug valve is perpendicular to the valve body, it is in the fully closed position. Therefore, Packing Cock cannot be used as a regulating valve. Pressure Cock, also known as rotary valve, is a fast opening valve. Plug valves are generally classified according to their steering direction and can be divided into straight, three-way, four-way and other plug valves. The straight plug valve is usually used to control the medium flow on the straight pipe section, while the three-way plug valve and four-way plug valve are usually used to distribute the medium and change the flow direction of the medium. The working principle of the plug is that the plug body of the plug valve rotates around the centerline of the valve body t…