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Water Mist Fire Protection

A water mist system is a fire protection system which uses very fine water sprays (i.e. water mist). The small water droplets allow the water mist to control, suppress or extinguish fires by:

  • cooling both the flame and surrounding gases by evaporation
  • displacing oxygen by evaporation
  • attenuating radiant heat by the small droplets themselves

The use of water mist fire suppression, when compared to the use of gaseous agents and traditional sprinkler systems, has revealed advantages such as:

  • Immediate activation
  • High efficiency in the suppression of a wide variety of fires
  • Minimized water damage
  • Environmentally sound characteristics
  • No toxic problems

Why High Pressure Water Mist?

The NFPA 750 defines three pressure regions for water mist-generating technologies: low, intermediate and high pressure systems. Marioff’s rigorous testing procedures, combined with the company’s unrivalled experience, have shown that high pressure water mist consistently delivers:

  • Better penetration into the seat of the fire
  • Superior coverage of the protected volume
  • An improved cooling effect from better mixing of gases and high evaporation rate
  • Lower overall system weight
  • Less water consumption

Water Mist Fire Protection

controls, suppresses and extinguishes fires by discharging a fine water mist at high velocity. The water mist is made by the system when it activates, by pushing plain, potable water through specially designed and patented HI-FOG® sprinkler and spray heads at high pressure. The water mist is discharged at high velocity using high-pressure pumps or accumulators.

Water Spray Nozzle & Sprinkler

Medium Velocity Spray Nozzle

– UL Listed

– Made Out of Bronze

– Maximum Working Pressure 175 PSI

    Finish Material of Construction Spray Angle Degree K Factor Inlet Description
Natural Chrome Finish Forged Brass Stainless Steel 60/75/80/90/100/110/120/140/180 24/28/31/36

41/45/51/57/61/66/71/76/81/86/91

BSP / NPT / NH Threads ½” Size
¾” Size

Tank Cooling Nozzle

– UL Listed

– Made Out of Bronze

– Maximum Working Pressure 175 PSI

    Finish Material of Construction K Factor Inlet Description
Natural

Chrome Finish

Forged Brass

Stainless Steel

20/30/37/45/53/72 BSP / NPT /

NH Threads

½” Size

Pendent Type

– UL List

– Made Out of Bronze

– Maximum Working Pressure 175 PSI

Finish Inlet Connection Description
 

Natural

Chrome Plated

½”NPT Rated Temp 57°
Rated Temp 68° UL Listed
½“PT Rated Temp 79° UL Listed
Rated Temp 93°
Rated Temp 141°

Upright Type

– UL Listed

– Made Out of Bronze

– Maximum Working Pressure 175 PSI

Finish Inlet Connection Description
 

Natural

Chrome Plated

½”NPT Rated Temp 57°
Rated Temp 68° UL Listed
½“PT Rated Temp 79° UL Listed
Rated Temp 93°
Rated Temp 141°

Sidewall Type

– UL Listed

– Made Out of Bronze

– Maximum Working Pressure 175 PSI

Finish Inlet Connection Description
 

Natural

Chrome Plated

½”NPT Rated Temp 57°
Rated Temp 68° UL Listed
½“PT Rated Temp 79° UL Listed
Rated Temp 93°
Rated Temp 141°

FOAM-WATER SPRINKLER

MODEL F1 – Stainless Steel H – Bronze
MOUNTING Pendent
MAXIMUM WORKING PRESSURE 12 Bar  (175 PSI )
OPERATING PRESSURE 2.1Bar (30PSI )minimum 4.2 Bar (60 PSI )maximum
END CONNECTION 1″ ½” ¾”
K-FACTOR K-42 standard Other K-factor can be provided as optional without UL Listing

Wet System

When a sprinkler (1) opens, the discharging water

lifts the alarm valve clapper (2) and flows through

the alarm port (3) to the retard chamber (4). When

the retard chamber is filled, water flows to the water

motor alarm and/or the optional pressure switch (5)

which signals an electric alarm bell (6).

Dry System

Model F-1 Dry Pipe Valve When a sprinkler (1) opens, loss of air pressure in the system allows the dry valve clapper (2) to open, filling the system with water. To speed the opening of the dry valve in large systems, an accelerator (3) can be added. An integral anti-flood device protects against accelerator flooding.Water flow from the intermediate chamber of the dry valve can cause a pressure switch (4) to activate an electric alarm and/or operate a mechanical water motor alarm.

Deluge System

Model F-1 Deluge Valve Electric Release When the detector (1) is activated, a signal is sent to the VFR-400 release control panel (2). The panel sends appropriate alarm signals and, at the same time, energizes the normally closed (NC) solenoid (3) open. The deluge valve priming chamber (4) is then vented faster than water is supplied through the restricted orifice, allowing the deluge valve to open. The water enters the system piping. Water flows from all open sprinklers or nozzles (5). When the deluge valve operates, pressure opens the pressure operated relief valve (PORV) (6) continuously venting the water supply to the priming chamber, ensuring the deluge valve remains in the open position.

Preaction System

Single Interlock Electric Release

When the detector (1) is activated, a signal is sent

to the VFR-400 release control panel (2). The panel

sends appropriate alarm signals, and at the same time, signals

the release of the solenoid valve (3). When the solenoid opens,

the priming water is relieved from the internal prime chamber

assembly (4). The prime chamber assembly collapses, and water

passes through the G series valve and internal check diaphragm

The water enters the system piping, but until a sprinkler (6) activates

no water is discharged.  When the valve operates, pressure opens

the pressure operated relief valve (PORV) (7) continuously venting

the water to the priming chamber, ensuring the deluge valve

remains in the open position.

Foam/Water Deluge Sprinkler System

When the detector (1) is activated by fire, a signal is sent to the VFR-400 Release Control Panel (2).

The panel sends appropriate alarm signals and, at the same time, signals the release of the solenoid

valve (3). The deluge valve priming chamber (4) is then vented faster than water is supplied through the

restricted orifice (5), allowing the deluge valve to open. When the deluge valve operates, pressure     opens the pressure operated relief valve (PORV) (6) continuously venting the water to the priming chamber, ensuring the deluge valve remains in the open position. Trim piping, tied into the priming chamber of the Halar-coated concentrate control valve (7), allows that valve to open at approximately the same time, opening the foam concentrate line to the sprinkler system. The outer shell of the bladder tank (8), pressurized by system water, squeezes foam concentrate out to the proportioner (9). As water flows through the venture area of the proportioner,a metered pressure drop draws foam concentrate into the system water creating a foam solution mixed to the appropriate ratios. This solution then flows through the sprinkler piping and out to the open sprinklers or nozzles (10).

FIRE-FIGHTING FOAM SYSTEM

FireDos proportioners were designed to support the effectivity of stationary fire-extinguishing systems by their high-performance and made-to-last technology.

These proportioners are driven solely by the extinguishing water flow. No further energy source is required.

The water motor drives a specially designed proportioning pump which delivers the foam agent into the extinguishing water line.

Horizontal Split Case Fire Pumps

Patterson Horizontal Split Case Fire Pumps are engineered for reliable operation upon demand.Patterson sweats the details. All fabricated parts are standardized and accurately machined for true alignment, increasing overall durability. Precision balancing of all rotating components provides mechanical dependability, reliable operation and minimal maintenance. Impellers are constructed with double inlets that practically eliminate end thrust while boosting operating efficiency.The simple, split case design of these pumps allows for in-line service without disturbing piping while ensuring long, efficient unit life,reduced maintenance costs and minimal power consumption.These pumps are designed to operate with pressures in excess of 390 psi (27 bar) and flows from 150 gpm to 5,000 gpm (568 liter/min to 18,925 liter/min). Whether your fire pump application requires an electric motor, a diesel engine or vertical or horizontal orientation, these industry-approved pumps can be configured to meet your specific needs.

Fire Pumps & Packaged System

  • Applications :Fire-protection of buildings and other built infrastructure
  • Description :The Horizontal Split-Case (HSC) FirePack offering features the full range of Armstrong HSC fire pumps,electric or diesel-driven, and controller.All mounted,piped, and wired on a base at the factory.
  • Materials :Metal base,piping,pump,and control panel;switchgear;electric motor/ diesel engine
  • Configuration :Optional features include jockey pump,jockey pump controller city by-pass loop,flow meter loop, main relief valve plus waste cone,and diesel fuel tank.50 Hz and 60 Hz electric versions.
  • Performance range :500 – 3000 USgpm

Fire Pumps & Packaged System

Diesel Engine Fire Pump Controllers – Aline Pumps is a Leading Diesel Engine fire pump controller

The Patterson Pre-Pac is the product of a long heritage of advanced fire pump engineering design and development, with our knowledge and experience Pre-Pac offers the very best in pumping technology. Built in a controlled environment at our facility, providing single source responsibility. It is pre-engineered to meet, or exceed, all applicable codes. For an added measure of security, it is completely tested in accordance with NFPA 20 and all piping hydrostatically tested.

The real muscle of our prepackaged system is our reliable split case pump, featuring discharge pressures of 40 to 390 psi and capacities of 150 to 4,500 GPM. In fact, right now there are thousands of Pre-Pac split case pumps providing efficient fire protection throughout the world.

The Pre-Pac can be designed to satisfy specific requirements. It can be custom fitted with either a diesel engine or an electric motor. Or both. Plus, it’s available as a totally enclosed house unit or on a simple skid mount.

Foam Maker With Vapor Seal Chamber

– Designed for the use in Floating Roof Tank with low expansion Foam System

– Air Aspirating Expanded Foam Discharge Device consisting Expansion Chamber and Foam Maker with Stainless dSteel Mesh for Aeration and prevention of entering of Foreign objects

– Carbon Steel or Stainless Steel Construction

– Hot Dip Galvanized for Corrosion resistance in case of Carbon Steel Construction

– 5 Models available to cover all the Flow Requirements

– Orifice Plate designed as per the required flow at a desired pressure is standard supply along with foam maker

– Orifice Plate can be changed in case of change in Design Parameters

– Foam Pourer for directing the Expanded Foam into Tank is optional accessory.

Discharge Outlet (NB) Inlet (NB) Item Code
75-225 LPM 80 50 SKA-FE-FMWVS
225-450 LPM 100 65
450-900 LPM 150 80
900-1800 LPM 150 100
1800-2700 LPM 200 150

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