Transcript SEVERN TRENT SERVICES

Wet Pipe Sprinkler System
Expansion Chamber
Sales Presentation October 2004
FIRE-X-TROL
Features & Benefits
•
Absorbs expanded antifreeze solution
•
Diaphragm expansion chamber (4X cycles of a bladder
style tank)
•
Protects system and components from thermal
expansion
•
UL listed
– for use with fire protection antifreeze systems per
NFPA 13
•
ASME
– Designed, constructed, and tested per ASME Section
VIII, Division 1 Standards
– Available code and non-code
FIRE-X-TROL
Features & Benefits
•
Pre-charge is separated from system fluid
•
5X safety factor by design
•
Protects system and components from thermal
expansion
•
Helps prevent system hydraulic lock-up
•
Required when backflow prevention device is used
(most local regulations)
•
Seismic restraints available (vertical models)
•
Antifreeze compatible
– (Glycerine and Propylene Glycol)
•
Broad range of sizes
– 4 to 90 gallons (15 – 341 ltr.)
FIRE-X-TROL
How does the Fire-X-Trol work?
1.
It is installed between the backflow preventer and fill cup
2.
It’s sealed-in dry air/nitrogen pre-charge chamber
prevents antifreeze solution from entering it until the
system pressure exceeds the pre-charge pressure.
3.
As the antifreeze solution temperature rises, expanded
system fluid enters the Fire-X-Trol non-corrosive reservoir.
4.
The Fire-X-Trol absorbs the pressure increase, keeping
system pressure below maximum system rating.
5.
As the fluid temperature decreases, pressure in the dry air
/nitrogen chamber forces system fluid out of the expansion
chamber and back into the system.
FIRE-X-TROL
•
•
Materials of Construction
–
All steel body construction with stainless steel system
connection
–
Polypropylene Liner Material
–
Diaphragm Material: UL certified high-performance
elastomeric compound
–
Coating: FPT Red
Maximum Operating Conditions
–
Maximum Working Pressure: 175 psig (12 bar)
–
Operating Temperature: -20 F (-29 C) to 200 F (93 C)
–
Factory pre-charge: 25 psig (1.7 bar)
FIRE-X-TROL Models
FIRE-X-TROL Installation
Schematic
In-Line Models
Stand Models
FIRE-X-TROL Installation
Schematic
Isolate expansion
chamber during system
hydro test.
Install in supply line
between backflow
preventer and fill cup
connection.
FIRE-X-TROL Installation
Schematic
Isolate expansion
chamber during system
hydro test.
Install in supply line
between backflow
preventer and fill cup
connection.
Fire-X-Trol used with
Backflow Preventer
•
NFPA 13 requirement
As stated in NFPA 13, 7.5.3.3:
“Where the connection between the antifreeze solution
and the wet pipe incorporates a backflow prevention
device, a listed expansion chamber of appropriate size
and pre-charged air pressure shall be provided to
compensate for thermal expansion of the antifreeze
solution…”
FIRE-X-TROL
Installation
1.
Visually inspect FIRE-X-TROL for any damage.
2.
Hydraulic system pressure must be at zero.
3.
Attach nitrogen or dry air supply to expansion chamber
charging valve
•
4.
Dry air: -50 F / -46 C dew point or lower
Pre-charge to 2 psig (0.14 bar) below system static pressure at
tank location.
•
Never pre-charge below 25% of the system maximum rated
pressure.
5.
Remove charging hose. Carefully test charging valve for
leakage.
6.
Replace plastic cap.
Antifreeze Solution Table
Sizing Chart
Note1:
Note 2:
AMTROL recommends installing a pressure reducing valve before the
backflow preventer.
The system pressure is too close to the maximum working pressure.
NFPA 13 recommends installing a pressure reducing valve before the
backflow preventer.
Sizing Chart
Note1:
Note 2:
AMTROL recommends installing a pressure reducing valve before the
backflow preventer.
The system pressure is too close to the maximum working pressure.
NFPA 13 recommends installing a pressure reducing valve before the
backflow preventer.
FIRE-X-TROL
Warranty and Lead-time
• Warranty
– Limited (1) year warranty
• Lead-time
– 10 working days
– Safety stock inventory for quicker
delivery if required
FIRE-X-TROL
FAQ’s
Q:
What division does Fire suppression systems fall
under?
A:
Division 13.
Q:
What does NFPA stand for?
A:
National Fire Protection Agency
Q:
What fluids can be used with the Fire-X-Trol
expansion chamber?
A:
Glycerine-water and propylene glycol-water mixtures.
Q:
What is a Wet Pipe Antifreeze system?
A:
Antifreeze systems are typically used as subsystems
of a wet pipe system and are intended to protect small
areas that could be exposed to freezing temperatures.
FIRE-X-TROL
FAQ’s
Q:
What happened to the recommended 40-gallon (151
liter) limit for antifreeze systems?
A:
This recommendation has been deleted in the NFPA
13 2002 edition. There is no limit to the size of an
antifreeze system.
Q:
Is a reduced-pressure zone backflow prevention
device required in an antifreeze system?
A:
Many local regulations require that a backflow
prevention device be used in the system to guard
against any potential contamination of the public
water supply.
Q:
Is an expansion chamber required when a backflow
prevention device is used?
A:
Yes. Section 7.5.3.3 of NFPA 13 requires the use of an
expansion chamber.
FIRE-X-TROL
FAQ’s
Q:
Does antifreeze-water solution expand and
contract?
A:
Yes. The solution will expand and contract with
changes in temperature. The amount of expansion
and contraction depends upon total temperature
change and the density of the specific solution used.
Q:
Is the Fire-X-Trol UL Listed?
A:
Yes. The Fire-X-Trol is UL listed and was subject to
extensive UL testing for compatibility with antifreeze
solutions and to assure that the quality of the
Fire-X-Trol meets fire protection standards.
Q:
What are the advantages of an AMTROL diaphragm
tank?
A:
In extensive cyclic testing and with the performance
proven AMTROL diaphragm technology, a diaphragm
can typically accommodate 4X the cycles of a bladder
style tank.