Fleyenda provides 6000PSI forged ferrule type two-way and three-way hydraulic stainless steel fittings, suitable for ordinary grade seamless pipes from Ф4 to Ф42.
Medium: oil, water, gas and other non-corrosive or corrosive media
Standard: NPT, GB, BSPP, BSPT
Temperature: ≤450℃
Applicable industries: pipeline connections, injection molding machines, CNC machine tools, automatic lathes, building plumbing, hydraulics, etc.
Contact Fleyenda for ODM service.
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Female Elbow Fitting |
Male Elbow Fitting |
Street Elbow Fitting |
Threaded Pipe Fitting |
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Female Thread TEE |
Hex Coupling |
Hex Nipple |
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Tube Fittings Description
The tube fitting is a mechanism used both to seal and to grip tubing . The mechanical advantage and geometry of this kind of fitting produces a leak – tight assembly . To assemble , simply insert the tube into the complete assembly until the tube bottoms – out against the shoulder of the fitting body . The two ferrules are driven forward between the nut and fitting body using the mechanical force created by rotating the nut clockwise . The Back ferrule is driven against the tapered rear of the front ferrule is driven by force into the tapered mouth of the body . The rear ferrule is swaged radially inwards on the tube while lifting the front ferrule out to form a full – faced seal on the tapered surface of the body . The 1-1/4 Turn of the nut from the hand tight position assures consistent drive of the sealing members . This ensures an effective seal against high pressure as well as ultra high vacuum conditions . Installation Instructions
Fittings are supplied assembled and finger tight . Disassembly before use can allow the entry of dirt or other particles 1 . Insert the tubing into the fitting Check That the tube rests firmly on the fitting shoulder and that the nut is finger tight , At this point it is recommended that a scribe mark be drawn on the hex of the extending onto the fitting body . This mark will serve as an indicator for the starting point and proper pull – up . 2 Tighten the nut 1-1/4 Turns of the nut are required for 1/4” (6mm) and higher ( See Fig . A ) 3/4 Turn of the nut is required for 3/16” (4mm) and lower ( See Fig.B ) Reassembly Instruction Connections may be disconnected and remade repeatedly , without loss of leak tight seal . 1. Before disconnecting , Mark the position of the nut inrelation to the fitting body . 2. To reassemble , use a wrench to tighten nut to original position . 3. Tighten slightly with wrench until a slight rise in torque is felt . Warning
Do not hold the tube in a vise in the place where it will be inserted into the fitting ( the vise will leave a mark on the tube that may cause leaks , and might cause ovality ). Tube Handling
Scratches on the tube might cause leaks . it is , therefore , important to handle the tube carefully to reduce the risk of leaks . Some Recautions to be taken 1.Tubes must not be dragged on the floor . 2.Tubes must not be dragged out of a tubing rack , especially in case of large OD tubes Inspection Tubing Use : This is a “ No- Go ” Gauge and should be used as follows : Make up to fitting according to the following instructions : 1/4 inch ( 6mm ) , 3/8 inch , 1/2 inch ( 12mm ) – make up 1-1/4 turns from finger tight . Check gap between nut and body , using the appropriate sized gauge . If the gauge slides easily into the gap , tighten the nut further until gauge can not enter the gap High Safety
In applications where severe conditions and high pressure exist , we recommend the following installation procedures : 1. Check that the nut is finger tight 2. Insert the tube ( Up to the shoulder ) 3. Rotate the nut with a wrench until the tube does not rotate freely . 4. Mark position of the nut . 5. Rotate the nut 1-1/4 turns . This method ensures that even if the tube O.D. is at the minimum tolerance , the ferrules will be in contact with the tube for the full 1-1/4 rotation. In order to assure maximum fitting reliability and performance , great care should be given when selecting the tubing for each application Tube Selection
Four variables must be considered when ordering tube for use with fittings : 1. Material 2. Tube wall thickness 3. Tube surface finish 4. Tube hardness Tubing should comply with standard ASTM A213 or ASTM A269 , be seamless , and fully annealed . The tube must be red of scratches and suitable for bending and flaring. |
