Vertical Pre-Piped Bladder Tanks

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The CHEMGUARD Vertical Pre-Piped Bladder Tank is a steel pressure vessel which stores foam concentrate contained within an elastomeric bladder. The concentrate is discharged from the tank by incoming water applying pressure to the bladder. This applied energy is transferred to the foam concentrate, supplying pressurized foam concentrate to the proportioner.


The CHEMGUARD Vertical Pre-Piped Bladder Tank is a complete balanced pressure proportioning system inclusive of a proportioner and all of the valves and piping required for either manual or automatic operation. These tanks are intended for use where is it desirable to have the proportioning system pre-assembled with fixed dimensions known, eliminating field assembly of loose components and uncertainty in the layout of the foam equipment room. CHEMGUARD Vertical Pre-Piped Bladder Tanks can be used with most CHEMGUARD foam concentrates and any suitable discharge device to complete the foam system.

CHEMGUARD Vertical Pre-Piped Bladder Tanks require only a pressurized water supply for operation. No other external power is required. As with standard CHEMGUARD bladder tanks, they can be used in a variety of applications, including aircraft hangars, foam-water sprinkler systems, truck loading racks, and helipads.


  • Pre-piped configurations with a wide selection of proportioner sizes, including the ULTRAWIDE CL for closed-head sprinkler systems
  • Includes all components required for use in an automatic or manually operated system
  • UL Listed and FM Approved for use with various CHEMGUARD proportioners and foam concentrates
  • 175 psi (12.1 bar) maximum allowable working pressure (design pressure)
  • Nominal capacities up to 2,000 gal (7,570 L) with larger tanks available on special request
  • Choice of Standard or Corrosion-Resistant Epoxy exterior paint, available in a variety of colors
  • Optional sight gauge and thermal pressure relief valves available

Approvals and Certifications

CHEMGUARD Vertical Pre-Piped Bladder Tanks are UL Listed and FM Approved for use with various CHEMGUARD foam concentrates. FM Approval valid only when used in conjunction with the optional Hydraulic Concentrate Control Valve Supervision Retrofit Kit. The UL mark and FM Approval diamond are 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 Vertical Pre-Piped Bladder Tanks 200 gal (757 L) and larger are CE marked in conformance with the European Pressure Equipment Directive, 2014/68/EU. Under European Pressure Equipment Directive 2014/68/EU, tanks smaller than 200 gal (757 L) are acceptable based on sound engineering practices of ASME code and cannot be CE marked.