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Fortpro ST-3 Type Safety Valve, 150 PSI, 1/4” NPT Replacement for Bendix 284142, Mack 20QE1129 | F224652

Fortpro ST-3 Type Safety Valve, 150 PSI, 1/4” NPT Replacement for Bendix 284142, Mack 20QE1129 | F224652

SKU: F224652

Availability: In Stock

Stock Level: More than 50 available.

Shipping: Calculated at Checkout

Regular price $8.98 USD
Regular price Sale price $8.98 USD
Sale Sold out
Shipping calculated at checkout.

About this Item

  • Very Important: Please Verify this product Description and Compatibility before Buying
  • Built and Tested According to International Quality and Safety Standards
  • Made of Brass for Long-lasting Durability
  • Not Adjustable. Inlet Port: 1/4” P.T. Opening Pressure: 150 ± 5 PSI. Number of Vents: 1
  • Replacement for Bendix 284142 Safety Valve (ST-3 Type)


Check Specification & Cross-references


  • Part OEM: Bendix 284142
  • Part: ST-3 Type Safety Valve
  • Inlet Port: 1/4” P.T.
  • Adjustable: No
  • Closing Pressure: 75% of the Minimum Opening Pressure
  • Opening Pressure: 150 PSI
  • Number of Vents: 1
  • Height: 61.7 mm
  • Material: Brass
  • Notes: Frequently Used On Air Tanks


  • Automann: 170284142
  • Bendix: 284142, 284142N
  • Dayton Parts: AV284142
  • Euclid: EBN205105N
  • Haldex: KN31400
  • Mack: 20QE1129
  • Meritor: RKN31400
  • Navistar-International: 408425C91

Shipping Policy

In order to send your purchase, our company may use different freight companies like USPS, UPS and some 3erd Carrier Services for Oversize orders, this will not affect the final price of your order. We will send you all the information in due time. 

For Free Shipping and Freight/Oversize Shipments they are some special term you may check at our Terms & Conditions page.


Return Policy

If for any reason you need to return a purchased item, we have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must met the conditions stablished in our Terms & Conditions.

To start a return, you can contact us at


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