Abstract: An elongated multi-layer tubing having a first layer disposed radially innermost and having an inner surface capable of prolonged exposure to a fluid containing hydrocarbons and an outer surface spaced a first predetermined radial thickness from the inner surface, the first layer containing an extrudable, melt-processible thermoplastic. The tubing also includes a second layer connected to or bonded to the first layer and consists essentially of an extrudable, melt-processible thermoplastic capable of laminar adhesion with the first layer. At least one of the first and second layers can be resistant to permeation by hydrocarbons. The tubing includes a third layer connected to or bonded to the second layer and containing an extrudable, melt-processible thermoplastic.

Abstract: A jet pump includes a sucking jet pump with a flow duct having a decreasing cross section and a suction pipe insert which is inserted therein, a bypass arrangement and a valve arrangement, which form a construction unit, where the sucking jet pump has a nozzle insert which is inserted in a duct, which forms the flow duct with decreasing cross section.

Abstract: The present invention is a high pressure quick connector especially for use in connecting brake lines of a vehicle. The connector includes a housing which selectively receives a tube retainer cap. Retaining means such as a garter spring or snap ring allow for a low force insertion of the cap into the housing with an very high pull-off force. The cap is used to trap a tube with a bead upset, and the tube may be removed after the cap is unlocked. A second way of releasing the tube includes the use of a tube retainer plug selectively received in the cap, the upset trapped between the plug and cap. The plug can be removed while the cap is still locked in the housing, releasing the tube. A release tool may be used to unlock the cap from the housing. An insertion indicator ring is used to establish the locking of the cap within the housing. A dust boot prevents contaminants from interfering with the operation of the connector.