Humidification Nozzles

Humidify air in ducts, drying kilns, curing rooms, greenhouses, and other enclosed areas


Humidity is a measure of how much water vapor is present in air. The volume of water vapor that can be held in air can vary significantly with temperature and pressure; with warm air being able to hold more water vapor than cold air. Due to this, humidity is frequently expressed in terms to relative humidity (RH), which equates the actual amount of water vapor in the air compared to what the air is capable of holding under the environmental conditions (temperature and pressure) present at that time.

In many industrial processes, commercial processes, and agricultural settings it is necessary or advantageous to increase the humidity (or water content) of the air in a duct, chamber, or room. The fine atomization of water produced by misting or fog pattern spray nozzles is effective at increasing the humidity level. The small water droplets produced by these nozzles are capable of evaporating quickly, even at normal ambient temperatures, thus increasing the amount of water that is present in the air. Under most general atmospheric environmental conditions, only a relatively small amount of water is required to evaporate and effectively increase the relative humidity. BETE offers a wide variety of nozzles which can provide the low flow rates and fine atomization required for humidification applications.
 
  • This evaporation of fine water sprays can also reduce the temperature of the air, depending on the amount of water added and overall change in humidity. For additional information on evaporative cooling, please see Gas Cooling/Quenching and Air Inlet Cooling.

Selecting a Humidification Nozzle:

Important factors to consider:

  • Initial and desired relative humidity levels
  • Size and shape of area to be humidified
  • Ventilation rates & air currents in rooms or air flow rate & velocities in ducts
  • Temperature and environment
  • Water quality/filtration
  • Type of nozzle and spray pattern being used
    • Available nozzle mounting locations and nozzle spacing
    • Availability of compressed air
  • Nozzle material
    • Stainless steel is a common selection to resist corrosion in humid environments
  • Available/required flow rate
  • 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

Common Humidification Nozzle Uses and Industries:

  • Moisten air in ducts
  • Keep an even humidity in drying kilns
  • Achieve a high relative humidity in curing rooms
  • Greenhouses
  • Barrel rooms
    • Distilleries
    • Wineries
    • Breweries
  • Keep the humidity constant in baking operations
  • Any other application where humidity is critical to the process

PJ

  • Simple operation, requiring only water pressure to achieve atomization
  • Impingement style nozzle with external pin
  • No whirl vanes or internal parts
  • Lower flow rates than P series
  • Multiple filter options available
  • Optional safety wire hole available
Nozzle Type(s):
Impingement
  • Impingement nozzles provide some of the finest atomization of any nozzle type for lower flow rate applications making them ideal for many humidification applications.
Spray Pattern(s):
Mist
Flow Range:
.007 to .865 gpm
Typical Pressure Range:
50 to 3000 psi
Angle Range:
90°
Common Materials:
303, 316

Mist

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 100 psi 1000 psi 2000 psi 3000 psi
PJ 6 1/8″, 1/4″ 90° - - .010 .030 .042 .052
PJ 8 1/8″, 1/4″ 90° - - .018 .057 .080 .099
PJ 10 1/8″, 1/4″ 90° - .017 .027 .085 .120 .147
PJ 12 1/8″, 1/4″ 90° - .023 .036 .115 .163 .199
PJ 15 1/8″, 1/4″ 90° - .037 .058 .185 .262 .320
PJ 20 1/8″, 1/4″ 90° .034 .067 .106 .335 .474 .581
PJ 24 1/8″, 1/4″ 90° .050 .100 .158 .500 .707 .865

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.

MicroWhirl

  • Simple operation, requiring only water pressure to achieve atomization
  • Outstanding atomization
  • Optional safety wire hole available
Nozzle Type(s):
Whirl
  • BETE misting nozzles provide the low flow rates and fine atomization required for efficient humidification
Spray Pattern(s):
Mist
Flow Range:
.008 to .380 gpm
Typical Pressure Range:
100 to 3000 psi
Angle Range:
1 - 120°
Common Materials:
303, 316

Mist

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)
100 psi 250 psi 500 psi 1000 psi 2000 psi 3000 psi
MW 085 1/8″, 1/4″, 3/8-24 70° .008 .013 .019 .027 .038 .047
MW 105 1/8″, 1/4″, 3/8-24 70° .010 .017 .024 .033 .047 .058
MW 125 1/8″, 1/4″, 3/8-24 70° .012 .020 .028 .040 .056 .068
MW 145 1/8″, 1/4″, 3/8-24 70° .014 .023 .032 .046 .065 .079
MW 195 1/8″, 1/4″, 3/8-24 70° .020 .031 .044 .062 .087 .107
MW 275 1/8″, 1/4″, 3/8-24 70° .028 .044 .062 .087 .123 .151
MW 695 1/8″, 1/4″, 3/8-24 70° .069 .110 .155 .219 .310 .380

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.

UltiMist

  • Simple operation, requiring only water pressure to achieve atomization
  • Three piece metal misting nozzle
  • Also available in an economical plastic version
Nozzle Type(s):
Whirl
  • BETE misting nozzles provide the low flow rates and fine atomization required for efficient humidification
Spray Pattern(s):
Mist
Flow Range:
.006 to .306 gpm
Typical Pressure Range:
40 to 1000 psi
Angle Range:
90°
Common Materials:
Brass, 400 Series, Polyacetal

Mist

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)
40 psi 100 psi 500 psi 1000 psi 1200 psi
UM 37 1/8″, 1/4″ 90° .006 .010 .022 .031 .034
UM 50 1/8″, 1/4″ 90° .008 .013 .030 .042 .046
UM 75 1/8″, 1/4″ 90° .012 .020 .044 .063 .069
UM 100 1/8″, 1/4″ 90° .017 .026 .059 .083 .091
UM 150 1/8″, 1/4″ 90° .025 .040 .088 .125 .137
UM 200 1/8″, 1/4″ 90° .033 .053 .118 .167 .183
UM 250 1/8″, 1/4″ 90° .042 .066 .147 .208 .228
UM 300 1/8″, 1/4″ 90° .050 .079 .177 .250 .274

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.

XAAD

  • Internal mix air atomizing nozzle
  • Wide variety of hardware configurations
  • Available with clean out and shut off capabilities
  • Nickel alloy and other 300 series stainless steels available by request
Nozzle Type(s):
Air-Atomizing
  • Air-atomizing nozzles can provide fine atomization and high turndown capabilities ideal for humidification applications
  • The compressed air utilized to atomize the water can significantly increase the throw and coverage of these nozzles over traditional hydraulic misting nozzles
Spray Pattern(s):
Hollow Cone
Angle Range:
70°
Common Materials:
Nickel-plated Brass, 303, 316