500 gallon Foam Water Bladder Tank for Fire System

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Product Overview

Description



Welcome to BAIAN




Product Description


 


The Baian foam bladder tank is a steel pressure vessel fitted with an internal bladder that stores foam concentrate .During operation ,water supplied to the bladder tank displaces the foam concentrate and collapses the bladder until the concentrate is depleted .


The bladder tank discharges foam concentrate is at approximately the same pressure as the water supplied at the water inlet connection to the tank .Since the bladder tank is pressurized , the bladder should not be refilled during operation .


 


Frequently used in aircraft hangars ,loading racks ,sprinkler system , and offshore platforms.


 


BAIAN foam system bladder tanks provided accurate,dependable ,and cost-effective foam fire protection for a variety of flammable /combustible hazard areas,with no external power other than water pressure .Water is applied to the outside surface of the bladder , displacing foam concentrate inside the bladder , which then is injected into the water stream .


Bladder tanks are components of balanced-pressure proportioning systems ,which often are installed on helicopter decks and in small aircraft hangers ,storage facilities ,and warehouses .Bian CCC listed bladder tanks are available in vertical and horizontal prepiped(50-4500) gallons configurations .


 


 Vertical type on legs or horizontal type on saddles. Legs and saddles are provided with fixing holes


 


 Machine welded circumferential and longitudinal seams for maximum quality and durability


 


 Welded lifting lugs for easy handling operations


 


 Bladder tanks are over sized to permit concentrate thermal expansion


 


 Tank equipped with drain/fill/vent valves needed for full operation


 


 Mixing ratio selector 0%-6%


 


 Manual or electrical pump


 


 Foam flow-meter and mixing ratio measuring circuit


 


 Pressure Gauges  :   Stainless steel


 


 Design Pressure   :   12 bar


 


 Test Pressure   :    >17.3 bar


 


 Capacity   :    300L up to 10,000L


 


 


 


materials and specifications of structures of a bladder tank. 
 
1) The bladder tank body is made of 20# high quality carbon structural steel (under codes and standards of China and ISO, detailed contents are: C :0.17~0.24; Si:0.17~0.37; Mn:0.35~0.65; S :≤0.035; P :≤0.035; Cr:≤0.25; Ni:≤0.25; Cu:≤0.25). This kind of steel is suitable for the welding and construction of tanks for fire fighting foam proportioning system utility.
 
2) Bladder in nitrile butadiene rubber and polyester, available of the tensile strength that ensures no ruptures under operation conditions.
 
3) Main valves are made of corrosion resistant stainless steel.
 
4) Pipe networks made of seamless steel pipe. The inlet and outlet of ratio controller will be in DN100 (4") with a pressure from 6 bar up to 12 bar. 


 


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0.2165 s.