BLOG | Hose & Fittings, Etc.

Choosing Compression Transportation Tube & Hose Fittings

Posted on Mon, Jun 27, 2011 @ 05:06 PM

 

parker-air-brake-fittings

There are several types of Parker D.O.T. approved air brake fittings and transmission fittings to suit your application. Both compression and push-to-connect styles are available. The two terms are often confused or used interchangeably, but there are important differences between them. (Here is a blog about the differences between compression and push-to-connect transportation fittings.)

Following is a list of compression fittings that will help you to choose the right fitting for your application. You may also want to read a related blog about push-to-connect transportation fittings.

Air Brake-AB Fittings

  • Characteristics: Electroless nickel plated bodies can be used with bio-diesel
  • Tube compatibility: Copper, SAE J844 Type A & B Nylon tubing
  • Thread availability: Male pipe, SAE straight thread
  • Body material: Brass
  • PSI: Up to 400
  • Approvals: Meets D.O.T. FMVSS 571.106 when assembled with 63 NTA tube support & SAE J844 nylon tubing. Meets SAE J246

Transmission Fittings

  • Characteristics: Specially designed slotted sleeve helps to eliminate notch stress due to over-torque; ideally suited for use in pressure protected air transmission applications
  • Tube compatibility: SAE J844 Type A & B Nylon Tubing
  • Thread availability: Male pipe
  • Body material: Brass
  • PSI: Up to 150
  • Approvals: None required by D.O.T. for vehicle use

Air Brake-NTA Fittings

  • Characteristics: Ribbed sleeve for compression & positive grip; comes with a pre-applied thread sealant
  • Tube compatibility: SAE J844 Type A & B Nylon Tubing
  • Thread availability: Male pipe, Female pipe, Metric
  • Body material: Brass
  • PSI: Up to 150
  • Approvals: Meets D.O.T. FMVSS 571.106, SAE J246 & SAE J1131

Air Brake Hose Ends

  • Characteristics: Meets D.O.T. FMVSS 571.106 standards when used with SAE J1402 air brake hose
  • Hose compatibility: Parker 271 3/8 & ½ inch hose
  • Thread availability: Male pipe, SAE straight thread
  • Body material: Brass
  • PSI: Up to 225
  • Approvals: Meets D.O.T. FMVSS 571.106 when used with SAE J1402 air brake hose

Vibra-Lok

  • Characteristics: Provides a positive reliable seal under vibration conditions, mechanical shock or tube movement. May be used with air, water, gasoline, oil, diesel fuel & lubricants
  • Tube compatibility: copper, aluminum, steel, stainless steel, glass; available in inch dimension only
  • Thread availability: Male pipe, SAE straight thread. Optional threads include ISO 6149 & British pipe threads
  • Body material: Brass
  • PSI: As low as 100 for severe vibration; up to 1000 for static pressure
  • Approvals: None required by D.O.T. for vehicle use

Questions about tube or hose fittings?

 ASK US NOW!

 Published by Roger Winchell

Tags: maintenance, technical, automotive