Model HAA31-3.5 Air Amplifier

Single-Acting, Single Stage Air Amplifier

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SKU: HAA31-3.5 Categories: , Tags: ,


Haskel Model HAA31-3.5 Air Amplifier

Catalog literature: Air Amplifier Catalog.pdf Acrobat DC

With a nominal pressure ration of 3.5:1 (2nd stage ratio N/A), the Haskel model HAA31-3.5 Single-Acting, Single Stage Air Amplifier can boost air pressures to a maximum of 450 psi PSIG.

Features & Benefits:

  • Long seal life and easy maintenance
  • No heat, flame or spark risk
  • Wide range of models, controls and options
  • No air line lubrication required, eliminating oily exhaust
  • Infinitely variable outlet pressure and flow capability
  • Wide range of standard and custom systems
  • Control of maximum pressure by means of inexpensive air drive pressure regulators

Technical Data:

  • Air Drive Size: 2.87 in
  • 1st Stage Ratio: 3.5:1
  • 2nd Stage Ratio: N/A
  • Min Gas supply pressure: 40 psi
  • Max Gas supply pressure: 125 psi
  • Max rated outlet pressure: 450 psi
  • Static outlet stall pressure formula: 3.5 Pa (Pa = air drive pressure, Ps = GAS supply pressure)
  • Min AIR drive pressure: 40 psi
  • Max AIR drive pressure: 125 psi

Sample Performance Curve:

Physical Characteristics:

  • Unit weight: 5 LBS.
  • Displacement / cycle: 1.77 cu. in.
  • Max cycles: 325/min.
  • GAS inlet/outlet connections: 3/8″ FNPT
  • AIR drive inlet port: 1/4″ FNPT


Repair kit information:

  • Boosting section seal kit P/N: 85790-3.5
  • Air drive section seal kit P/N: 85264
  • Air valve seal kit P/N: N/A
  • Optional tools: None.
  • Notes: Only one kit required: each kit contains all of the necessary seals for the Air Drive & Gas Section or Air Drive & Air Valve.
  • Installation documents:  SKIS-001  SKIS-002  SKIS-008