Page 158 Page 158 Components Assembled Flareless Fittings Our Flareless fittings are interchangable with Parker Ferulok® (style A ferrule) and Eaton-Weatherhead Ermeto® (style B ferrule) fittings. Also called “Compression Grip”, or “Bite Type” fittings, This fitting provides a compact connection that is reliable, durable, and reusable. The Flareless connection is a 3-piece design consisting of; the Nut, the Ferrule, also called a Sleeve, and the Body. It is popular for a variety of applications and environments world wide, not only because it is reliable and easy to assemble, but because the Flareless connection holds pressure so well that the tubing fails before the Flareless connection comes apart. As the Flareless nut screws onto the body it slides the ferrule along the tube and presses it into the internal 24° cone of the body. As the hardened ferrule is being compressed into the body it bites 360° into the O.D. of the tube forcing the tube to also seat against the body. This creates a high pressure seal that is excellent against vibration as the connection force is distributed over multple points, which dampen vibrations that can cause a connection to come loose. No special tools are required as NO flare is needed. Therefore, it is recommended for a wide range of seamless, medium to extra-heavy wall tubing with a maximum hardness of Rockwell B72. Steel and stainless steel tubing is the most common, but aluminum, copper, monel, titanium, and plastic tubing can be used as well. Our Flareless Fittings come complete with nuts and ferrules assembled on the bodies, which also protect the threads. See the Flareless Assembly Instructions on page 159. Flareless Fittings are dimensionally standardized by SAE under J514, but because of differing manufacturing methods and interpretation of conformance, actual performance will vary between brands. This is where our Quality Assurance Department sets us apart from other manufacturers. Pressure Connections takes great pride in each fitting we sell. Standard material for our Flareless Fittings is steel with a RoHs compliant 96-hour salt spray finish that exceeds the SAE 72- hour salt spray requirement. For details about our Quality Assurance Program please reference the inside front cover of this catalog.
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Page 158Page 158
Components Assembled
Flareless Fittings
Our Flareless fittings are interchangable with Parker Ferulok® (style A ferrule) and Eaton-Weatherhead Ermeto® (style B ferrule) fittings. Also called “Compression Grip”, or “Bite Type” fittings, This fitting provides a compact connection that is reliable, durable, and reusable.
The Flareless connection is a 3-piece design consisting of; the Nut, the Ferrule, also called a Sleeve, and the Body. It is popular for a variety of applications and environments world wide, not only because it is reliable and easy to assemble, but because the Flareless connection holds pressure so well that the tubing fails before the Flareless connection comes apart.
As the Flareless nut screws onto the body it slides the ferrule along the tube and presses it into the internal 24° cone of the body. As the hardened ferrule is being compressed into the body it bites 360° into the O.D. of the tube forcing the tube to also seat against the body. This creates a high pressure seal that is excellent against vibration as the connection force is distributed over multple points, which dampen vibrations that can cause a connection to come loose.
No special tools are required as NO flare is needed. Therefore, it is recommended for a wide range of seamless, medium to extra-heavy wall tubing with a maximum hardness of Rockwell B72. Steel and stainless steel tubing is the most common, but aluminum, copper, monel, titanium, and plastic tubing can be used as well.
Our Flareless Fittings come complete with nuts and ferrules assembled on the bodies, which also protect the threads. See the Flareless Assembly Instructions on page 159.
Flareless Fittings are dimensionally standardized by SAE under J514, but because of differing manufacturing methods and interpretation of conformance, actual performance will vary between brands. This is where our Quality Assurance Department sets us apart from other manufacturers. Pressure Connections takes great pride in each fitting we sell. Standard material for our Flareless Fittings is steel with a RoHs compliant 96-hour salt spray finish that exceeds the SAE 72-hour salt spray requirement. For details about our Quality Assurance Program please reference the inside front cover of this catalog.
Page 159Page 159
1. Select tubing that meets the recommended SAE requirements for Flareless fittings and also meets the parameters per your environment and application. See table below.
2. Cut the tubing reasonably square (+/– 1°). A tubing cutter is NOT reccommended for hard tubing like steel and stainless steel as this creates an internal burr, which is hard to remove, and causes a restriction in flow.
3. Lubricate the threads and the ferrule with 10W hydraulic oil.
4. Slide the Nut onto the tube and then the Ferrule, both oriented per the diagram on page 158.
5. “Set” the Ferrule onto the tube by inserting the tube into the pre-set tool, or fitting body, and threading the nut on finger tight. A pre-set tool is for setting the ferrule onto the tube prior to assembly. Continue by making a visual mark on the nut, and while pressing the tube firmly against the tool or fitting, tighten the nut another 1-3/4 turns from finger-tight.
6. An Inspection should be made after the initial assembly to ensure that the ferrule has been properly “set” onto the tube. Disassemble the connection and make sure that the ferrule is “biting“ into the tube properly.
7. With the ferrule properly “set” onto the tube re-tighten the connection to finger tight, and then wrench-tighten another 1/3 – 1/2 of a turn. It is important to use the same nut-ferrule-body matched set to achieve a good connection. This completes a Flareless connection.
Caution: A Flareless connection cannot be checked by wrench torque, as a proper connection depends on the movement of the ferrule into the 24° cone of the body in order to effectively “bite” into the tube. This is why Pressure Connections only uses hardened ferrules.
FFX: Female Flareless Swivels assemble to finger tight and then wrench-tighten anoither 3/4 of a turn from finger tight for all sizes.
Flareless Assembly Instructions
Flareless FitingsC-319 (080115)
Pg. 161Flareless Ferrule-Sleeve
C-6602 (080432)
Pg. 171Swivel Nut Run Tee
1-MF 2-FFX 3-MF
C-2501 (080202)
Pg. 165Male Elbow1-MF 2-MP
C-2502 (080203)
Pg. 166Female Elbow
1-MF 2-FP
C-2601 (080425)
Pg. 166Male Branch Tee1-MF 2-MF 3-MP
C-2603 (080401)
Pg. 167Union Tee
1-MF 2-MF 3-MF
C-6801 (080220)
Pg. 172Straight Thread Elbow
1-MF 2-MB
C-304C (080112)
Pg. 160Flareless Cap
1-FF
306 (070118)
Pg. 22-75-160Bulkhead Locknut(Use with #2700)
C-318 (080110)
Pgs. 161Flareless Nut
• • • • C-2405 (080103)
Pg. 163Female Connector
1-MF 2-FP
C-2602 (080427)
Pg. 167Female Branch Tee
1-MF 2-MF 3-FP
C-2500 (080201)
Pgs. 165Union Elbow1-MF 2-MF
C-2408 (080109)
Pg. 164Flareless Plug
1-MF
C-2406 (080123)
Pg. 164Flareless Tube Reducer
1-RTS 2-MF
C-2605 (080424)
Pg. 168Male Run Tee
1-MF 2-MP 3-MF
C-2606 (080426)
Pg. 168Female Run Tee1-MF 2-FP 3-MF
C-6802 (080320)
Pg. 172Straight Thread Elbow
1-MF 2-MB
C-2700 (080601)
Pg. 169Bulkhead Union1-MF 2-BH MF
C-6803 (080429)
Pg. 173ORB Branch Tee1-MF 2-MF 3-MB
C-2701 (080701)
Pg. 169Bulkhead Union Elbow
1-MF 2-BH MF
C-6804 (080428)
Pg. 173ORB Run Tee
1-MF 2-MB 3-MF
C-6400 (080120)
Pg. 170Straight Thrd Connector
1-MF 2-MB
C-6500 (080221)
Pg. 170Swivel Nut Elbow
1-MF 2-FFX
C-6600 (080433)
Pg. 171Swivel Nut Branch Tee
1-MF 2-MF 3-FFX
C-2403 (080101)
Pg. 162Flareless Union
1-MF 2-MF
C-2403LH (080119)
Pg. 162Large Hex Union
1-MF 2-MF
C-2404 (080102)
Pg. 163 Male Connector
1-MF 2-MP
1 2
• • • •
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•1
1 3
22
1 2
1
2
1 2
1 2
3
1 2
3
1 2
1
2
-04 = 0.028—0.065
-06 = 0.035—0.095
-08 = 0.049—0.120
-10 = 0.058—0.120
-12 = 0.065—0.120
-16 = 0.083—0.148
Tubing Wall ThicknessSteel / Stainless Steel
min. – max.
Available in 316 Stainless Steel•
Flareless Fittings come assembled with the required Nuts and Ferrules,and are interchangable with Parker Ferulok® and Eaton-Weatherhead Ermeto®.
Flar
eless
Page 160
Flareless Fittings Flareless information is on pages 158–159