MATCO TOOLS DFK93 Premium Double Flaring Kit Instructions
- June 9, 2024
- MATCO TOOLS
Table of Contents
MATCO TOOLS DFK93 Premium Double Flaring Kit
Double Flaring Tool Kit
The Double Flaring Tool Kit offers a quick and convenient method of making
double flares on thin wall steel tubing. This tool can be used with seamless,
butt-welded, or lap-seam-welded steel tubing having not over .035 wall
thickness. This tool can also be used for single or double-flaring soft
copper, aluminum, magnesium, or other soft, thin-wall tubing.
Product Usage Instructions
- Loosen the (2) wing nuts on the flaring bar. This permits the separation of the (2) halves of the flaring bar.
- Before inserting tubing into the flaring bar, be sure the end of the tubing to be flared has been cut off squarely and any burrs removed from the inside edge. Tubing should also be chamfered on the outside edge. This chamfering is very important as it influences the results obtained in the first forming operation. Chamfering can be done very easily with an ordinary file.
- Insert the tubing into the flaring bar.
- Tighten the wing nuts. Tighten the wing nut nearest to the tube first, and then tighten the other wing nut. The wings on the nuts are of a special shape that permits using the rod of the yoke as a lever in tightening. Nuts must be securely tightened so there is no chance of the tube slipping.
- Place the yoke over the bar of the tool. Now place the adapter of the proper size on the protruding end of the tubing, with the stem of the adapter inserted into the tubing. It is advisable to put a little oil on the lower face and stem of the adapter.
- Move the yoke into position so that the flaring cone centers directly over the adapter. Screw the cone down until the cone and adapter engage. At this point make sure that the adapter is centered in the tubing, and then continue screwing the cone down until the shoulder of the adapter rests on the flaring bar. This performs a belling operation on the tubing as shown in Figure 2.
- Occasionally oil yoke screw and oil swivel cone through the hole in the side.
Instructions
This tool offers an exceedingly quick and convenient method of making double flares on thin-wall steel tubing. This tool can be used with seamless, butt- welded or lap-seam-welded steel tubing having not over .035” wall thickness. This tool can also be used for single or double-flaring soft copper, aluminum, magnesium or other soft, thin-wall tubing.
- Loosen the (2) wing nuts on the flaring bar. This permits the separation of the (2) halves of the flaring bar.
- Before inserting tubing into the flaring bar, be sure the end of the tubing to be flared has been cut off squarely and any burrs removed from the inside edge. Tubing should also be chamfered on the outside edge. This chamfering is very important as it influences the results obtained in the first forming operation. Chamfering can be done very easily with an ordinary file.
- Insert the tubing into the hole of the proper size, with the end of the tubing protruding above the top of the flaring bar by a distance equal to the width of the shoulder on the adapter of the corresponding size. (See Figure 1) With steel tubing that is harder than average, it may be necessary to slightly reduce the distance that the tube protrudes from the flaring bar. Experience gained from using this tool will indicate when this is necessary. (A set of (5) adapters, one each for 3/16”, 1/4”, 5/16”, 3/8”, and 1/2” O.D. tubing, is a part of the tool.)
- Tighten the wing nuts. Tighten the wing nut nearest to the tube first, and then tighten the other wing nut. The wings on the nuts are of a special shape that permits using the rod of the yoke as a lever in tightening. Nuts must be securely tightened so there is no chance of the tube slipping.
- Place the yoke over the bar of the tool. Now place the adapter of the proper size on the protruding end of the tubing, with the stem of the adapter inserted into the tubing. It is advisable to put a little oil on the lower face and stem of the adapter.
- Move the yoke into position so that the flaring cone centers directly over the adapter. Screw the cone down until the cone and adapter engage. At this point make sure that the adapter is centered in the tubing, and then continue screwing the cone down until the shoulder of the adapter rests on the flaring bar. This performs a belling operation on the tubing as shown in Figure 2.
- Back off the flaring cone slightly and remove the adapter. Screw the cone down again tightly, this time directly onto the tubing. This folds the tubing back on itself, as shown in Figure 3, forming an accurate 45° double flare.
- Occasionally oil yoke screw and oil swivel cone through the hole in the side.
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