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Selecting a Parker D.O.T. Approved Push-to-Connect Air Brake Fitting

Posted on Tue, Jun 28, 2011 @ 08:34 AM

 

push-to-connect air brake fitting

There are three styles of Parker Department of Transportation (D.O.T.) approved push-to-connect brake fittings available at Hose & Fittings, Etc. Understanding the differences between them will help you to make the right choice for your application.

People often confuse the terms "push-to-connect" and "compression" when referring to fittings. However, the terms are NOT interchangeable. Read the related blogs about compression transportation fittings, and the differences between compression and push-to-connect transportation fittings.

Prestomatic

      • Characteristics: Brass fitting with stainless steel tube support
      • Tube compatibility: SAE J844 Type A & B Nylon Tubing
      • Thread availability: Male pipe, Female pipe, SAE straight thread, Metric
      • Body material: Brass
      • PSI: Up to 250
      • Approvals: Patented design sizes of 5/32” and above meet SAE J2494 and D.O.T. FMVSS 571.106 air brake specifications. Stainless steel tube support in sizes ¼” and above assures the maximum flow requirements of SAE J3494-3. In order to pass hot pull requirements of SAE FMVSS 571.106 and SAE J2494-3 a tube support must be present in the end of the fitting before final fitting assembly.


 

Metric Prestomatic

      • Characteristics: Brass fitting with stainless steel tube support; metric
      • Tube compatibility: SAE J844 Type A & B Nylon Tubing, DIN 73378 Virgin Nylon
      • Thread availability: Metric & British parallel pipe
      • Body material: Brass
      • PSI: Up to 250
      • Approvals: Sizes 6mm and above meets DIN 74324. Product only meets FMVSS 571.106 when used with SAE J844 metric tubing. If product is used with DIN tubing, it will not meet FMVSS 571.106 performance requirements. Meets DOT FMVSS 571.106 when used with SAE J844 tubing. In order to pass hot pull requirements of SAE FMVSS 571.106 and SAE J2494-3 a tube support must be present in the end of the fitting before final fitting assembly.


 

PTC Composite Push-In Air Brake Fittings

      • Characteristics: Plastic Composite with stainless steel tube support
      • Tube compatibility: SAE J844 Type A & B Nylon Tubing
      • Thread availability: Male pipe only
      • Body material: Plastic Composite
      • PSI: Up to 250
      • Approvals: Meets D.O.T. FMVSS 571.106, SAE J2494 and SAE J113 requirements. In order to pass hot pull requirements of SAE FMVSS 571.106 and SAE J2494-3 a tube support must be present in the end of the fitting before final fitting assembly.


 

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Posted by Roger Winchell

Tags: maintenance, technical, automotive