Manufactured by Generant
A Leading Producer of Pressure and Flow Control Products.

The following procedures refer to the proper assembly of the BI-Lok Series D Dual Ferrule Tube Fittings. 

    1. BI-Lok Tube Fittings are supplied fully assembled and individually bagged, allowing for clean efficient make-up. Should component assembly be required, please note that the order of assembly is the front ferrule into the cone of fitting body, back ferrule and fitting nut as noted in Fig. 1.

     2. Insert the tubing into the fitting body until it bottoms out against the tube stop shoulder of the fitting. Please note that tubing should be cut squarely and free of burrs. 

    3. Hand tighten the nut as much as possible, bringing the fitting to what is called the “finger tight” position. 

    4. Secure the fitting body with a wrench and tighten the nut with another wrench an additional 3/4 of a turn for tube sizes 1/16” thru 3/16” or for sizes 1/4” and above 1-1/4 turns. (refer to Fig. 2a, 2b, and 2c). 

Reassembly Instructions 

To reassemble a BI-Lok Series D Dual Ferrule Tube Fitting, simply insert the tube assembly (nut, front and back ferrule preswaged on the tube) into the fitting body and hand tighten the nut. Next, using a wrench, rotate the nut approximately 1/4 of a turn (back to the original make-up position) and then tighten the nut slightly. 

Tube Measuring and Fitting 

When measuring and bending tubing it is important to be aware of two critical measurements. The first being the tube insertion depth (reference dimension G) into the fitting assembly which must be considered in the determining the over all length of tube required. The other being the minimum length of straight tubing required for a proper tube bend (reference dimension H). Both measurements are dependent on tube OD; please use Fig. 3 for reference purposes.