What Is Gate Valve?
A gate valve may be described as a sort of valve that used a gate or wedge kind disk and the disk actions perpendicular to glide to begin or forestall the fluid glide in piping.
A gate valve is the maximum not unusualplace sort of valve utilized in any technique plant. It is a linear movement valve used to begin or forestall fluid glide. In service, those valves are both in a totally open or absolutely closed position.
When the gate valve is absolutely open, the disk of a gate valve is absolutely eliminated from the glide. Therefore truely no resistance to glide. Due to this little or no stress drops whilst fluid passes via a gate valve.
To obtain right sealing, whilst the valve is absolutely closed, 360° floor touch is needed among disk and seats.
Gate valves need to now no longer be used for law or throttling of glide due to the fact correct manipulate isn't possible.
The excessive pace of the glide withinside the in part open valve can also additionally purpose erosion of the disc and seating surfaces and additionally creates vibration and noise.
Types of Gate Valves
There are three ways to classify the gate valve.
Types of Disk
- Solid taper wedge
- Flexible wedge
- Split wedge or Parallel disks Valve
Types of Body Bonnet Joint
- Screwed Bonnet
- Bolted-Bonnet
- Welded-Bonnet
- Pressure-Seal Bonnet
Types of Stem movement
- Rising Stem or OS & Y Type (Outside Stem and Screw Type)
- Non-rising Stem type
For more, please read here: Types of Valves and Types of Check Valves.