Open-Type Deluge Nozzles

Protect equipment, storage tanks, hazardous loading areas, and equipment bays


Open-type water spray protection systems are typically designed per NFPA 15 or similar design standards and are acceptable for the protection of hazards involving; flammable or combustible materials, electrical hazards, propellants, pyrotechnics, and similar life/safety situations. Open-type deluge nozzles and systems typically maintain dry supply piping and the use of heat, smoke, or flame detection equipment to open a deluge valve which supplies water and pressure to the nozzle for operation.

Download the BETE Fire Protection Brochure (PDF - 1.4MB)

BETE Nozzles for Fire Protection (PDF - 25 KB)

  • These differ from automatic systems in which automatic nozzles use a heat sensitive element to maintain a closed orifice and retain the water/pressure of the supply piping system until activated.

There are three general categories for deluge applications:FIRE.jpg

  • Direct Extinguish: Water is sprayed directly onto the flames to control the blaze and extinguish the fire. Commonly used in emergency situations.
  • Flame Control: Water is sprayed to control the spread of a fire but not extinguish it. This is commonly used in gas leak situations where the gas continues to be consumed by the flame until the flow of gas can be turned off. Extinguishing these types of fires before turning off the gas flow can allow a build-up of flammable gas that can lead to an explosion.
  • Cooling: Water is sprayed onto the exterior surface of vessels that are under pressure and/or contain volatile materials. The water keeps the contents cool thereby preventing the contents from increasing in pressure. Commonly used in tank farms and on any vessel where catastrophic failure might occur from overheating.

Selecting an Open-type Deluge Nozzle:

Important factors to consider:

  • Size & shape of target object or area
  • Applicable design specifications and requirements
    • Required protection type:
      • Extinquish, containment, or cooling
    • Required flow rates/coverage densities
    • Allowable run-down
  • Potential wind drift
  • Available nozzle mounting locations
  • Available pressure drop (∆P) across the nozzle
    • ∆P = supply pressure at nozzle inlet - process pressure outside nozzle
  • Our experienced engineers can help determine which nozzle will perform as required with your design details
    • BETE is pleased to offer assistance in selecting nozzles and materials to meet the detailed specifications, required nozzle performance (K-factor (flow vs pressure), pattern/coverage, droplet size, etc.) and documentation requirements associated with approved water spray deluge systems
    • However, as a nozzle manufacturer, BETE Fog Nozzle Inc. cannot assume responsibility for the design of life/safety systems

Common Open-type Deluge Nozzle Uses and Industries:

  • Directly extinguishing flames in emergency settings
  • Controlling flames near gas leaks
  • Railway transfer stations
  • Steel industry foundries
  • Automobile tunnels
  • Fuel and flammable liquid storage tanks
  • Combustible material storage areas
  • LNG facilities
  • Refineries
  • Chemical plants
  • Aircraft hangers
  • Transformers
  • Electrical cable trays/runs

N

  • FM Approved, UL Listed, Lloyd's Register
  • U.S. Coast Guard Approval for N3-N5 ratings (90° and 120°)
  • Clog resistant, one piece design
  • Suitable for use in NFPA 15 compliant systems
  • Designed for industrial environments
  • Available with blow-off covers to prevent build-up and clogging in open orifices and piping while not in use
Nozzle Type(s):
Spiral
  • BETE's original spiral full cone design has been proven to provide an ideal spray pattern for outdoor fire protection by providing a mix of coarser droplets ideal for drift resistance encapsulating and projecting smaller droplets ideal for cooling and suppression to the target area
Spray Pattern(s):
Full Cone
Flow Range:
3.00 to 597 gpm
Typical Pressure Range:
10 to 150 psi
Angle Range:
90 - 120°
Common Materials:
Brass, Nickel Aluminum Bronze, 316, Titanium
  • Nickel Aluminum Bronze recommended for sea-water applications

Full Cone

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
10 psi 20 psi 50 psi 75 psi 100 psi 150 psi
N 1 1/2″ 90°, 120° 3.00 4.24 6.71 8.22 9.49 11.6
N 2 1/2″ 90°, 120° 5.31 7.51 11.9 14.5 16.8 20.6
N 3 1/2″ 90°, 120° 8.25 11.7 18.5 22.6 26.1 32.0
N 4 1/2″ 90°, 120° 12.0 17.0 26.9 33.0 38.1 46.7
N 5 1/2″ 90°, 120° 16.5 23.3 36.9 45.2 52.2 63.9
N 6 1/2″, 1″ 90°, 120° 21.0 29.7 47.0 57.5 66.4 81.3
N 7 1″ 90°, 120° 33.5 47.4 75.0 91.8 106 130
N 8 1 1/2″ 90°, 120° 47.4 67.1 106 130 150 184
N 9 1 1/2″ 90°, 120° 64.5 91.2 144 177 204 250
N 10 1 1/2″ 90°, 120° 84.4 119 189 231 267 327

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.

TF

  • Specific models are FM Approved
  • Thirty percent finer atomization than an equivalent whirl nozzle
Nozzle Type(s):
Spiral
  • BETE's original spiral full cone design has been proven to provide an ideal spray pattern for outdoor fire protection by providing a mix of coarser droplets ideal for drift resistance encapsulating and projecting smaller droplets ideal for cooling and suppression to the target area
Spray Pattern(s):
Full Cone
Flow Range:
.919 to 9.19 gpm
Typical Pressure Range:
50 to 150 psi
Angle Range:
60 - 90°
Common Materials:
Brass

TF

  • Specific models are FM Approved
  • Thirty percent finer atomization than an equivalent whirl nozzle
Nozzle Type(s):
Spiral
  • BETE's original spiral full cone design has been proven to provide an ideal spray pattern for outdoor fire protection by providing a mix of coarser droplets ideal for drift resistance encapsulating and projecting smaller droplets ideal for cooling and suppression to the target area
Spray Pattern(s):
Hollow Cone
Flow Range:
.919 to 9.19 gpm
Typical Pressure Range:
50 to 150 psi
Angle Range:
60 - 90°
Common Materials:
Brass

TF

  • Specific models are FM Approved
  • Thirty percent finer atomization than an equivalent whirl nozzle
Nozzle Type(s):
Spiral
  • BETE's original spiral full cone design has been proven to provide an ideal spray pattern for outdoor fire protection by providing a mix of coarser droplets ideal for drift resistance encapsulating and projecting smaller droplets ideal for cooling and suppression to the target area
Spray Pattern(s):
Full Cone
Flow Range:
8.52 to 85.2 gpm
Typical Pressure Range:
50 to 150 psi
Angle Range:
150°
Common Materials:
Brass, Nickel Aluminum Bronze, 316
  • Nickel Aluminum Bronze recommended for sea-water applications

FF

  • Specific models are UL Listed
  • Durable one-piece construction
  • Clog resistant
  • Extra wide flat fan spray angle
Nozzle Type(s):
Fan
  • Wide-angle, deflected flat fan pattern provides maximum coverage from each individual nozzle
  • Ideal for tank, cooling applications
Spray Pattern(s):
Fan
Flow Range:
1.64 to 31.8 gpm
Typical Pressure Range:
10 to 100 psi
Angle Range:
145°
Common Materials:
Brass

Fan

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
3 psi 5 psi 20 psi 40 psi 100 psi 200 psi
FF 187 3/8″ 145° 1.64 2.12 4.24 6.00 9.49 13.4
FF 196 3/8″ 145° 1.92 2.48 4.96 7.02 11.1 15.7
FF 209 3/8″, 1/2″ 145° 2.04 2.64 5.28 7.46 11.8 16.7
FF 218 3/8″, 1/2″ 145° 2.18 2.82 5.63 7.97 12.6 17.8
FF 221 3/8″ 145° 2.46 3.18 6.35 8.98 14.2 20.1

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.

AFF

  • FM Approved
  • Durable one-piece construction
  • Clog resistant
  • Extra wide flat fan spray angle
Nozzle Type(s):
Fan
  • Wide-angle, deflected flat fan pattern provides maximum coverage from each individual nozzle
  • Ideal for tank, cooling applications
Spray Pattern(s):
Fan
Flow Range:
8.34 to 69.7 gpm
Typical Pressure Range:
50 to 150 psi
Angle Range:
1 - 180°
Common Materials:
Brass, 316

Fan

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
50 psi 75 psi 100 psi 125 psi 150 psi
AFF 1.18 1/2″ 145° 8.34 10.2 11.8 13.2 14.5
AFF 1.66 1/2″ 145° 11.7 14.4 16.6 18.6 20.3
AFF 2.53 1/2″ 145° 17.9 21.9 25.3 28.3 31.0
AFF 3.35 3/4″ 145° 23.7 29.0 33.5 37.5 41.0
AFF 4.43 3/4″ 145° 31.3 38.4 44.3 49.5 54.3
AFF 5.69 3/4″ 145° 40.2 49.3 56.9 63.6 69.7

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.

TF29-180

  • TF29-180 nozzles in brass can be supplied in full compliance with MIL-S-24660
  • Ultra wide spray coverage very close to the nozzle
  • Excellent for deluge applications in which there is little distance between nozzle and material being protected
Nozzle Type(s):
Spiral
  • Wide-angle, spiral full cone design provides wide coverage diameters close to the nozzle
  • Ideal for protecting area or enclosures with very little head-space
Spray Pattern(s):
Full Cone
Flow Range:
3.79 to 110 gpm
Typical Pressure Range:
50 to 100 psi
Angle Range:
180°
Common Materials:
Brass, 316

Full Cone

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
10 psi 40 psi 50 psi 75 psi 100 psi 150 psi
TF29-180 16 1/2″ 180° 3.79 7.59 8.49 10.4 12.0 14.7
TF29-180 18 1/2″ 180° 6.01 12.0 13.4 16.5 19.0 23.3
TF29-180 21 1/2″ 180° 7.24 14.5 16.2 19.8 22.9 28.0
TF29-180 24 1/2″ 180° 9.49 19.0 21.2 26.0 30.0 36.7
TF29-180 28 1/2″ 180° 12.4 24.7 27.6 33.9 39.1 47.9
TF29-180 32 1/2″ 180° 17.4 34.8 38.9 47.6 55.0 67.4

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.

MaxiPass

  • BETE's unique, clog resistant S-vane design gives the MaxiPass the largest free passage available for a given flow rate, making it resistant to clogging, efficient, and reliable
  • Easily handles liquids with a high solids concentration
  • High reliability spray performance under the most difficult conditions
Nozzle Type(s):
Whirl
Spray Pattern(s):
Full Cone
Flow Range:
1.60 to 62.0 gpm
Typical Pressure Range:
20 to 80 psi
Angle Range:
60 - 120°
Common Materials:
Brass, 316

Full Cone

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
3 psi 5 psi 10 psi 20 psi 50 psi 80 psi
MP 187 3/8″, 1/2″ 60°, 90°, 120° 1.60 2.03 2.82 3.90 6.00 7.48
MP 218 1/2″ 60°, 90°, 120° 2.55 3.24 4.49 6.21 9.56 11.9
MP 250 1/2″ 60°, 90°, 120° 2.87 3.64 5.05 6.99 10.8 13.4
MP 281 3/4″ 60°, 90°, 120° 3.52 4.47 6.20 8.58 13.2 16.5
MP 312 3/4″ 60°, 90°, 120° 4.26 5.41 7.50 10.4 16.0 19.9
MP 343 3/4″ 60°, 90°, 120° 5.21 6.63 9.18 12.7 19.6 24.4
MP 375 3/4″, 1″ 60°, 90°, 120° 6.15 7.82 10.8 15.0 23.1 28.8
MP 406 1″ 60°, 90°, 120° 7.37 9.37 13.0 18.0 27.7 34.5
MP 437 1″, 1 1/4″ 60°, 90°, 120° 8.61 11.0 15.2 21.0 32.3 40.3

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.