| Model： | ||
| Standard or Nonstandard： | Standard |
|
| Material： | A216-WCB,A217-WC6,A217-WC9,A217-C5 |
|
| Media： | Water |
| PriceRange： | ||
| Temperature of Media： | NormalTemperature |
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The Pressure sealed gate valve is usually used in power stations, general industry, process engineering. It is for water, steam, gas, oil and other media.
Pressure seal bonnet gate valves have the same application features as bolted valves in many cases. The major difference is in the bonnet design.The pressure seal bonnet joint eliminates the body or bonnet flanges decrease weight and simplifying the applications of exterior insulation. Contrary to bolted bonnet valves, internal pressure applied to a pressure seal valve forces the sealing element into tighter contact-the higher the internal pressure, the tighter the seal. As gate valves may be installed witheout consideration for the direction of flow. They are not recommended for use in a partically open, throttling position because erosion, noise and excessive wear can occur. Gate valve installations should always be made with consideration for the potential of over-pressurization caused by fluid which may become entrapped in the bonnet of a closed valve. Where this posibility exists, it is the users responsibilitiy to ensure that proper venting is installed.
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