Viair 85-105 PSI Pressure Switch

Max Load of 20 Amps & 1/8" NPT


Looking for a simple and durable pressure switch for your compressor? One of the most essential components for any onboard air system, the Viair 85-105 Pressure Switch will automatically turn on your compressor when the pressure in your air tank drops below 85 PSI and automatically shut your compressor off when your tank reaches the desired pressure of 105 PSI. The Viair 85-105 Pressure Switch is made for longevity, rated for over 10,000 cycles. Perfect for both marine and automotive applications, the Viair 85-105 Pressure Switch works for both 12-Volt and 24-Volt applications. 

We recommend purchasing a relay with the Viair 85-105 Pressure Switch when using it with an air compressor. By installing a relay you can alleviate the burden of the compressor from the pressure switch, ensuring an even longer lifespan!

  • High Accuracy
  • Perfect For 12 or 24 Volt Applications
  • 1/8" NPT
  • Viair 85-105 PSI Pressure Switch 
  • Part Number: PS-105V
  • Ports: 1x ⅛″ NPT male
  • Turn-Off Pressure: 105 PSI
  • Restart Pressure: 85 PSI
  • Voltage: 12 or 24 Volts DC
  • Max Amps: 20 Amps
  • Money-Back Guarantee/Refund Policy
    All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
  • Warranty
    This product is backed by Viair's One-Year Manufacturer's Defect Warranty!
  • Satisfaction Guarantee offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
  • Cross-Shipments will not cross-ship returned merchandise.
  • Physical Damage Policy
    Physical damage to any product purchased at will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.

Warnings & Notices

Safety warning icon

This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to