Size: | DN50 - DN300 |
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Class: | 150lb to 2500lb |
Certificates: | API 6D, Ce, ISO9001 |
Application Fields: | 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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Double Connecting Nozzle Breathing Valve
Breathing valve is a kind of air breather which install on the petrochemical fixed storage tank, in order to avoid tank over the pressure or vacuum making the storage tank destruct, prevent the outside flame enter, reduce the tank fluid volatile.
Exhaling and Suction pressure:
Type A: +355pa(+36mmH2O) -295pa(-30mmH2O)
Type B: +980pa(+100mmH2O) -295pa(-30mmH2O)
Type C: +1950pa(+200mmH2O) -0.5Kpa(-50mmH2O)
Type D: +4KPa(operation pressure can decide by customer's specified)
Note:
under normal circumstances, (fire) breathing valve operating pressure to B shall prevail;
Applicable materials:
gasoline, kerosene, diesel, aromatics, sulfur, air and other petrochemical materials;
Environment temperature:
-30ºC -+60 ºC;
Shell material:
WCB, AL,CF8, 304, 304L, 316, 316L.
Flange standards:
HG20592-97 PN1.0 (also can be produced according to user specified criteria)
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