Fragola Performance Systems' Series 2000 Pro-Flow Hose Ends differ from the Series 3000 Hose Ends in the fact that they feature the "single nipple" method of hose attachment. With the "single nipple" style of attachment, the socket draws the hose over a long tapered single nipple. The hose seals by pinching the inside of the socket and the outside of the nipple. With this style of hose end, reusing it is a breeze. There is no sliver of cut hose to remove before reinstalling the hose end on a new piece of hose.
Fragola 2000 Series Race Hose Ends Feature:
Manufacturer recommended Series 2000 Hose Fitting Techniques to 3000 Series Stainless Braided Line:
- Unique One-Piece Design that eliminates two brazed joints, minimizing potential leakage, improving flow and appearance.
- Single nipple design.
- Two Viton® O-Rings form a redundant seal to ensure no-leak service for the life of the part and are impervious to fuel, oil, and coolant.
- Tapered nipple for easy alignment and installation.
- Bright dipped anodizing for a show quality finish.
- Improved entry angle on the socket allows for easy installation.
- All Fragola Hose Ends are manufactured from aerospace quality aluminum and machined to mil spec tolerance.
- 6 AN and larger hose ends are swivel style, 4 AN is non-swivel
- Cutting the Fragola Series 3000 Stainless Braided Hose is easy. Wrap the hose with "Gray" or masking tape at the desired length. You want to keep the braids from fraying. The hose may be cut with a hack saw if you have a 32-teeth-per-inch blade, otherwise a Beverly Shear, radiac or chop saw will work fine. After the cut, carefully remove the tape and trim any frayed ends if necessary.
- Place the socket in a vise, and insert the hose through the smooth end until the hose lines up with the bottom of the threads inside the socket. Using Fragola's Aluminum Vice Jaws will help protect the hose end from scratching during this process. If there is a concern about scratching, the hose end may also be wrapped with tape for protection.
- Mark the outside of the hose at the end of the socket. This will show you if the hose has "pushed out" of the socket during assembly, because if so, it will leak when used.
- It is very important you lubricate the inside of the hose/socket assembly, and the outside of the cutter threads with an assembly lube, such as Fragola Assembly Lube.
- Start the hose on the nipple of the hose end, hold the hose and not the socket, with a gentle twisting motion. Continue pushing on the hose until the threads can be engaged. Some sizes may require the use of some force to engage the threads at this point.
- Using a suitable wrench tighten the socket threads onto the cutter. It does not matter which portion of the assembly (the socket or nipple) is secured in a vise for this step. An adjustable "crescent" wrench is not recommended for this step as it may slip and damage the outside of the hose end.
- Tighten the socket until it is within .060-.080" of bottoming out. Recheck the mark you made during step 3, and if it is within 1/16" of the socket you are okay. If not, disassemble the hose end, re-cut the hose and start again.
- Clean the inside of the hose assembly with clean solvent. Blow out residue with compressed air. It is strongly recommended that you test the hose assembly for leakage before putting it into service. Be sure to lubricate the "B-nut threads" before installing on an adapter.
Many people over tighten the aluminum fitting on the adapter, which distorts the 37 degree seat and may cause a leak. Both the threads and the seat surface should have a drop or two of oil to smooth the tightening process. Please reference the chart on the specifications tab for maximum torque specifications. Another method of tightening is to bring the nut to "hand tight" and then rotate it another 1/4 turn with the proper wrench.