Air Brake DOT Push-In Fittings For Nylon Tube (Push/Connect) - 922
These "push-in" or "push-to-connect" brass tube fittings provide a quick and efficient method of assembling a variety of semi-rigid tubing, such as our DOT nylon NL560 Series SAE J844 Series (less expensive, traditional "compression" style fittings require multiple parts and are quite time consuming to assemble). Popular product is our truck air line fitting kits N66-SK1405. "Push-in" fittings are ideal for tight installations where a wrench cannot be used. These "push-in" fittings meet DOT standard FMVSS 571.106 and SAE J1131 Air Brake Performance Requirements, and are DOT recognized for all air brake applications except those for use between frame and axle or between towed and towing vehicles. Their bodies and "grippers" are made of brass and the o-ring is Buna-N (nitrile). Each male NPT end is pre-coated in Loctite 516 so no other thread sealants are required. All fittings are suitable for vacuum and pressures up to 150 psi. The temperature range is -40°C (-40°F) to 93°C (+200°F). When installing, ensure tubing ends are cut squarely and free from burrs; to remove, hold down the top of the insert against the fitting body then pull out the tubing. Warning: Normally PC fittings are for quick, convenient assembly of hoses and are not removed/re-used. Their internal collets become deformed and are not designed to easily release in order to be re-used. These products are intended for use in motor vehicle or industrial compressed air systems only.
In recent years there has been an influx of counterfeit air brake fittings that are not DOT approved, even though some fittings may simply be stamped with "DOT" or, when questioned, some companies may submit counterfeit, self-made DOT documents. Required testing to the applicable specifications must be done on a regular basis and kept on file. We recommend anyone coupling DOT systems request genuine, verified DOT documents from the fitting manufacturer.