Allegro Abrasive Helmet High Pressure Cooler, Vortex Style 4000-01

Usually ships in 2 - 3 days
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Vortex tubes are an effective, low cost solution to respiratory cooling needs. With no moving parts, a vortex tube spins compressed air to separate the air into cold and hot streams by forcing the compressed air through a generation chamber which spins the air centrifugally along the inner walls at a high rate of speed toward the control valve. The air temperature controller adjusts the amount of air to the helmet and adjusts air temp 25 degrees F (-3.8 C) cooler than the ambient air for use in hot environments. The respirator's air source must be supplied at all times with clean breathable air, Grade D or better as defined by the Compressed Gas Association. (Commodity Specification G-7.1)


  • Body: Plastic
  • Fitting: 1/4 in. (.63 cm) Quick-connect (Rectus style) stainless steel
  • Belt: Nylon
  • PSI Range: 55-82 psi
  • Weight: 1.3 lbs (.58 Kg)
  • Color: Blue body with black control valve


  • Lightweight for better comfort
  • Provides continuous cool air delivery
  • No moving parts
  • Easy to adjust control valve, even with gloved hands
  • Will cool compressed air by 25 degrees F (-3.8 C)
  • Belt adjust to fit up to 50 inches (127 cm) waist

NIOSH approved to supply a continuous flow of cool compressed air to the Nova 2000 supplied air respirator (approval number TC-19C-363) (USE ONLY NIOSH APPROVED AIRLINE HOSE)

Specification Sheet:


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