CHEMGUARD 36 Gallon Bladder Tank Foam Stations have a steel pressure vessel which stores foam concentrate contained within an elastomeric bladder.

CHEMGUARD 36 Gallon Bladder Tank Foam Stations are supplied pre-piped with a proportioner and hose reel in a skid configuration. These foam stations are complete hose reel foam systems and need only be connected to a water supply and filled with an appropriate foam concentrate to be put into service.

Trim Piping and Connections

CHEMGUARD 36 Gallon Bladder Tank Foam Stations are prepiped with a 2 in. (50 mm) CHEMGUARD threaded proportioner and include the tank shell drain, tank shell vent, bladder drain, and foam concentrate shutoff valves.

The hose reel includes either 100 ft (30.5 m) or 150 ft (45.7 m) of 1 1/2 in. non-collapsible, oil and chemical resistant booster hose with a maximum working pressure of 250 psi (17.2 bar).

The hose coupling is male 1 1/2 in. NHT. Four adjustable pattern nozzle options are available:

Protective Coatings

CHEMGUARD 36 Gallon Bladder Tank Foam Stations feature a high-build epoxy internal coating. Exterior paint is available in two grades: Standard and Corrosion-Resistant Epoxy (Epoxy CR). Color options are available for standard configurations.

Paint systems used on CHEMGUARD 36 Gallon Bladder Tank Foam Stations have been subjected to and passed salt spray corrosion testing per ASTM B117-90. Standard paint has been tested to a minimum of 240 hours in accordance with UL 162 and UL Subject 139. Epoxy CR paint has been tested to a minimum of 3,000 hours and is suitable for marine and offshore use.

Support and Mounting

Foam Station configurations are skid mounted. Refer to dimensional drawings for mounting slot spacing.

Included piping and valves are supported by the tank. No external support or bracing of piping is required under normal circumstances. Included piping is not designed to support loading from external piping connections. Appropriate piping supports should be used on field piping to avoid damage.

Internal Components

CHEMGUARD 36 Gallon Bladder Tank Foam Stations contain an elastomeric bladder that has been approved for use by Underwriter’s Laboratory for use with CHEMGUARD foam concentrates. All configurations utilize a center tube to facilitate agent discharge. The center tube is constructed of materials compatible with CHEMGUARD foam concentrates.

Thermal Relief Valve

A thermal relief valve is available as an option for CHEMGUARD 36 Gallon Bladder Tank Foam Stations. A thermal relief valve should be used when the bladder tank will be stored in an isolated/hydraulically locked condition in order to relieve pressure due to thermal expansion. This valve is factory set to 175 psi (12.1 bar) and it is recommended that the design pressure of the system be maintained at least 5 psi (0.3 bar) or 10% below the set pressure of the valve to avoid seat leakage and early valve maintenance. This valve is NOT a substitute for a properly sized ASME pressure relief valve to protect the entire system from overpressure.

ASME Information

CHEMGUARD 36 Gallon Bladder Tank Foam Stations are designed and constructed in accordance with the latest revisions to ASME Code Section VIII, Division 1 for unfired pressure vessels with a maximum allowable working pressure (MAWP) of 175 psi (12.1 bar) and tested to the pressure specified by the applicable codes and standards. Per ASME code, tanks with 175 psi (12.1 bar) MAWP are tested to at least 230 psi (15.9 bar). CHEMGUARD bladder tanks are constructed of steel complying with ASME specifications. Tank heads are 2:1 elliptical unless otherwise specified.

CHEMGUARD 36 Gallon Bladder Tank Foam Stations include a permanently affixed stainless steel ASME data plate. At a minimum, the data plate includes the following information: year of manufacture, maximum allowable working pressure (MAWP), nominal volume, part number, National Board number, minimum material thickness, minimum design metal temperature (MDMT), and type of head used.

Features

• UL Listed and for use with various CHEMGUARD proportioners and foam concentrates
• Hose reel foam stations available in 100 ft (30.5 m) and 150 ft (45.7 m) hose lengths
• Large, removable cap for easy filling
• Choice of Standard or Corrosion-Resistant Epoxy exterior paint, available in a variety of colors
• Standard high-build epoxy internal coating suitable for use with fresh or seawater

Application

CHEMGUARD 36 Gallon Bladder Tank Foam Stations are one component of a balanced pressure proportioning system. These small systems could include the protection of backup generator fuel storage in high rise buildings and hospitals or other small flammable liquid storage areas.

The CHEMGUARD 36 Gallon Bladder Tank Foam Stations meet the requirements of NFPA 409 for supplementary foam-water hand hose systems. Other applications for these foam stations include helipads, truck loading racks, offshore platforms, or any other location requiring a compact, self-contained foam-water hand hose line system.

CHEMGUARD 36 Gallon Bladder Tank Foam Stations require only a pressurized water supply for operation. No other external power is required.

Approvals and Certifications

CHEMGUARD 36 Gallon Bladder Tank Foam Stations are UL Listed for use with various CHEMGUARD foam concentrates. The UL mark is applied at the factory along with a label identifying the CHEMGUARD foam concentrate for use in the tank.

Every tank bears a permanently affixed ASME data plate showing the National Board number which identifies the tank as compliant with ASME code Section VIII, Division 1 for unfired pressure vessels.

CHEMGUARD 36 Gallon Bladder Tank Foam Stations are not CE marked. Under European Pressure Equipment Directive 2014/68/EU, tanks smaller than 200 gallons are acceptable based on sound engineering practices of ASME code and cannot be CE marked.