Fire Protection System

Horizontal Pre-Piped Bladder Tanks with Proportioner


The CHEMGUARD Pre-Piped Bladder Tank is a steel pressure vessel which stores a foam concentrate ontained 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 concentrate, supplying pressurized oncentrate to the proportioner. All tank models feature perforated tubes which allow improved agent discharge.

CHEMGUARD bladder tanks are available in a variety of nominal capacities as listed in the tank information tables. Pre-piped models listed in this data sheet are for use in manually operated systems. For automatically operated systems, please contact Tyco Fire Protection Products Technical Services.

Features incorporated into the CHEMGUARD pre-piped bladder tanks include the following:

  • Water pressurized bladder construction, alleviating the requirement for foam pumps or other energy sources
  • Valves that are pinned in the normal operative positions and are supplied with nameplates identifying their functions and operating instructions
  • Proportioner and piping attached to side of tank – no need for additional bracing
  • Corrosion-resistant (CR) foam concentrate piping
  • Exterior tank surfaces finished with a red “CR” epoxy finish for use in marine or corrosive environments
  • Tanks with a high-build epoxy coated interior for use with both fresh and salt water


The CHEMGUARD® Pre-Piped Bladder Tank is a complete balanced pressure proportioning system. A pre-piped bladder tank offers the foam system designer fixed dimensions inclusive of the proportioner/ratio controller. This takes away some of the uncertainty when sizing the foam equipment room and piping layout. Plus, the installer has the advantage of a pre-fabricated foam system, eliminating loose components and simplifying the installation. Its operation requires no external power other than a pressurized water system. The bladder tank may be used with any CHEMGUARD foam agent and with any suitable discharge device.

CHEMGUARD bladder tanks have numerous applications including truck loading racks, aircraft hangers, dip tanks, pump rooms, helipads, etc.


CHEMGUARD bladder tanks and proportioners are Underwriters Laboratories (UL) listed with various CHEMGUARD foam concentrates and bear the “UL” label along with an American Society of Mechanical Engineers (ASME) code stamp.

Standard bladder tanks 200 gallons (757 L) and larger are CE marked in conformance with the 97/23/EC Pressure Equipment Directive. Tanks less than 200 gallons (757 L) are acceptable based on sound engineering practices of ASME code.