Size: | DN50 - DN300 |
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Class: | 150lb to 2500lb |
Certificates: | API 6D, CE, ISO9001 |
Application Fields: | Metallurgy,Light Industrial,Electric Power,Petroch |
Delivery Detail: | 20~45 Days According to The Specific Quantities |
Transport Package: | Standard Export Wooden Case |
Customization: |
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Most atmospheric tanks require a venting device that will allow large volumes of vapor to escape under relatively low pressures. Usually the allowable set pressure is in inches of water column pressure, both for positive and vacuum conditions. This is because most large storage tanks have a relatively low maximum allowable working pressure.
The following will help in sizing a Pressure/Vacuum Valve:
Normal Relief: The sum of vapor replacement resulting from emptying or filling and thermal in-breathing or outbreathing.
Emergency Relief: Thermal out-breathing from fire exposure.
All Tanks: Generally require the sizing of a normal pressure and vacuum Relief Valve to be sized and an independent emergency Relief Valve to be sized separately.
Flow Curves: These curves provide pressure and vacuum capacity which is required for sizing.
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