Class 300 Gate Valve

Class 300 Gate Valve

A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The so-called Class 300 gate valve is a gate valve that can stand ANSI class 300. Class 300 refers to the pressure/temperature rating of the valve. It means that the nominal pressure is from 2.5MPA to 5.0 MPA. It belongs to middle pressure. 

Class 300 gate valve has a full port design with OS&Y, outside screw and yoke, bolted bonnet and rising stem. It has a fully guided and flexible wedge. The main parts of Class 300 gate valves are one body, two seats, one wedge, one stem, one gasket, one bonnet, one back seat, several packing, one gland, one gland flange, one stem nut, two eye nut, two pins, two spilt pins, one name plate, one hand wheel, one stem nut and so on. The basic design of Class 300 gate valves is API600 and BS1414. As for its face to face dimension and end to end dimension, it is ANSI B16.10

Class 300 gate valve actually is a kind of gate valves. Therefore, it has the same working principle of gate valves. Class 300 gate valve is used for cut-off the medium, when full open the flow through the whole pipe, when the media running, there have a minimum of pressure loss. Class 300 gate valve is usually used for the working environments which do not use frequently and keep the disc full-or full-closed. But it does not applicable to regulator or reducing the medium. When the flow of medium is high-speed, the disc to open at local conditions can cause the vibration of the disc, and the vibration damper may damage the disc.